Knowt turns notes, PDFs, lectures and YouTube videos into flashcards, quizzes and study guides, with unlimited free learn mode and a full AP, ACT and SAT prep suite.
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Knowt is a study platform that turns material you already have — notes, PDFs, recorded lectures, YouTube videos — into flashcards, quizzes, practice tests and study guides. It runs on the web, iOS and Android, and its defining commercial characteristic is that the flashcard core, including unlimited learn mode, is free.
Its own terms of service describe it in more formal language, calling the product a learning management system that "may or may not utilize artificial intelligence to provide and/or enhance certain features." That framing is more accurate than the marketing: Knowt is a study platform with AI features layered on, not an AI product that happens to do studying.
You cannot read about Knowt without encountering Quizlet. The company's own page title is "#1 Free Quizlet Alternative with AI Study Tools", the homepage repeats that claim as a section heading, and the anonymous testimonials it displays are overwhelmingly from users describing a switch away from Quizlet.
Two things should be said plainly about this. First, the substantive part of the comparison is real and verifiable: the App Store description confirms you can import existing flashcard sets "from popular sites like Quizlet", so the migration path exists as a genuine product feature rather than a slogan. Second, the "#1" is a self-awarded label. This page found no independent ranking, award or third-party assessment supporting it, and treats it as marketing rather than fact.
For scale context, a search of the App Store returns Quizlet with 1,103,367 ratings against Knowt's 10,295 — roughly a hundredfold difference in review volume. Knowt is a credible alternative; it is not the larger product.
The terms of service identify the contracting entity as Knowt Inc., with an effective date of 29 May 2025. The App Store listing shows the same entity as the seller, which cross-checks cleanly: the app you install and the company whose terms you accept are demonstrably the same organisation.
Beyond that, this page deliberately reports less than you may find elsewhere. Searches for independent coverage returned company databases, founder podcast appearances and affiliate-flavoured review sites — no verifiable reporting from an established technology or education publication. Widely repeated details about the founder, founding year, headquarters and funding could not be confirmed against a primary source, so they are omitted here rather than passed along.
Knowt publishes at least three different figures for its own scale, and they do not reconcile. The website's page description says "5 million+ students & teachers". The homepage body says "1,000,000 users across the top schools". The App Store description says "trusted by 7 million students". All three are vendor-reported and none is independently audited. The homepage also claims that at least 700,000 of 1.3 million students used Knowt for the May 2025 AP season, framed as "50% of all AP Students use Knowt" — again a vendor figure with no external verification.
None of this means the product is small or unpopular; the app store rating counts alone establish a substantial user base. It does mean specific numbers on this site should not be quoted as established facts.
This is the product's central mechanic and the reason most people arrive. Three separate intake routes are offered: a PDF Summarizer for long readings and slide decks, a Video Summarizer that accepts YouTube videos, and an AI Lecture Summarizer that records lectures directly.
The lecture notetaker is the most distinctive of the three. Rather than producing only a transcript, the documented output is a bundle: detailed notes, plus flashcards, quizzes and games generated from the same recording. For a student who records a class, that collapses several manual steps into one.
There is also a direct path for material you have already written — turning what the site calls "messy notes" into organised study guides, flashcards and quizzes.
Flashcards are the product's most recognisable unit, to the point that the app is literally named "Knowt: AI Flashcards & Notes". You can build sets with the AI flashcard maker or import them from other platforms.
Four study modes are documented: Learn Mode with unlimited rounds, Practice Test, Match, and Spaced Repetition. The company describes the spaced repetition component as a scientifically proven algorithm, though it publishes neither the mechanism nor any effectiveness data, and this page found no independent evaluation of it. Treat the mode as a well-established study technique implemented here, not as a validated performance claim.
Free accounts get custom hints and multiple-choice options on flashcards, which are the kinds of details that usually sit behind a paywall elsewhere.
Kai is the platform's named AI assistant, and its two documented behaviours are unusual enough to note. It can quiz you out loud — a spoken back-and-forth rather than a text interface — and it can generate a podcast from anything you upload, converting reading material into something you can listen to while doing something else.
Unlimited chats with Kai are a paid feature. What Kai actually does is closer to questioning and restating your own uploaded material than to independent tutoring, and no evidence of teaching effectiveness was found in this review.
The AP module is built out well beyond a generic study section. It comprises an AP Exam Hub with study guides and flashcards, a Practice Test Room with unlimited problems, a Free-Response Room where FRQs are graded automatically, and an AP Score Calculator for estimating outcomes.
Automatic FRQ grading deserves a caveat: free-response questions are inherently subjective, and neither the grading approach nor its accuracy is documented. It is useful for practice volume, not for a reliable score prediction. ACT and SAT preparation are also offered, though with less visible depth than AP.
Knowt hosts a public library of user-created notes and flashcards that the company describes as containing more than five million resources. This is genuine value — you can often find material for a specific course or exam without making it yourself — but the quality is uneven by nature, as covered in Limitations.
The paid tier is substantially aimed at educators rather than only at students. Documented capabilities include creating unlimited "fully monitored AI chat activities" for students, unlimited auto-graded assessments, additional question types for those assessments, and assigning AP mock exams and practice.
The word "monitored" is doing real work there. An AI chat activity where the teacher can see the exchange is a meaningfully different proposition from a student using a chatbot privately, and it is the feature most clearly designed around classroom accountability rather than individual convenience.
The strongest fit. A student with an AP exam in eight weeks can pull existing study guides from the AP hub, generate flashcards from their own class notes, drill unlimited practice problems, and rehearse free-response questions with automatic feedback — without paying, for the flashcard and study-mode portion.
For courses delivered as long lectures, the record-and-convert workflow addresses a real problem: notes taken live are usually worse than notes taken from a recording, but reviewing a full recording is slow. Producing notes plus flashcards from one recording is a genuine time saving.
Because sets can be imported from platforms like Quizlet, moving does not mean rebuilding a library from scratch. For students whose primary complaint about incumbent tools is that core study modes moved behind a paywall, the unlimited free learn mode is the direct answer.
The monitored AI chat activities, auto-graded assessments and assignable AP mock exams make this usable as a class-level tool, not just an individual one. The privacy posture supports that: the company addresses FERPA, Illinois SOPPA and New York Education Law §2-d in its school agreements, and commits that student records will not be sold or released for commercial purposes.
Knowt is built around retrieval practice — recall, quizzing, memorisation. It is not a tool for working through problem sets in mathematics, writing essays, or subjects where understanding is demonstrated by construction rather than recall. It is also English-only in its interface, and this review found no non-English interface support despite user-contributed library content in several languages.
1. Start free and stay free until something forces you off it. Unlike many freemium study tools, the free tier here is not a trial surface: creating notes and flashcards, the free study modes, custom hints and multiple-choice options, and browsing the shared library are all included. Establish whether the product suits you before considering payment.
2. Bring material in rather than starting from scratch. The intake routes — PDF, YouTube video, lecture recording, existing notes — are where the leverage is. Typing flashcards manually is the slowest possible way to use this product.
3. Check the shared library before creating a set. For common courses and AP subjects, someone has likely made the material already. Judge what you find on its merits rather than its existence: see the note on library quality in Limitations.
4. Use Learn Mode as your default, spaced repetition for the long game. Learn Mode has unlimited rounds even on the free tier, making it the workhorse. Spaced repetition earns its keep across weeks rather than in a single cramming session, so start it early or not at all.
5. If you are under 18, sort out consent before relying on the AI features. The terms require verifiable parental or guardian consent before under-18s use any AI-incorporating functionality. Building a study plan around AI summaries and then hitting that requirement mid-term is avoidable.
6. Verify AI-generated cards against your source. Summaries and generated flashcards reflect what the model extracted, not necessarily what your instructor emphasised. Spot-checking against the original reading is cheap; discovering an error during an exam is not.
7. Subscribe on the web rather than in-app if you might want a refund. Knowt states plainly it cannot refund purchases made through iOS or Android — those must go through Apple or Google. Web purchases fall under Knowt's own policy.
8. Know the cancellation path before you need it. Cancelling is done in-app: Settings → Your Plan → Cancel Subscription → complete a short form → submit. The terms note that periodic charges continue until you give notice, so cancelling is an action you must take, not something that happens by lapsing.
Treat the free tier as the product, not the demo. The paid tier is largely about unlimited AI summaries, unlimited Kai chats and teacher tools. If you mainly need flashcards and study modes, upgrading may buy you nothing you need.
Record lectures where you are permitted to. Institutional and local rules on recording vary, and consent requirements differ by jurisdiction. Confirm what is allowed before building a workflow that depends on it.
Use the AP hub as a starting scaffold rather than a syllabus. Community-contributed study guides reflect one student's understanding of a course, which may or may not match your teacher's emphasis.
Do not treat the FRQ auto-grader as a score predictor. Use it for volume and rapid feedback on structure. For anything resembling a real score estimate, a human reader remains necessary.
Handle the promotional coins carefully if a refund is plausible. Subscribers receive promotional coins after the trial converts, redeemable for merchandise — but redeeming them permanently forfeits refund eligibility for that subscription.
Act on refunds immediately. The pricing page allows a full refund minus roughly 3.5% in transaction fees within 24 hours of purchase or renewal. Note the terms of service state 48 hours instead; where two official documents disagree, assume the shorter window and contact support the same day.
Prefer desktop for rich-text note work. A Google Play reviewer reports that italics, bold and underline do not render in the mobile app while working correctly on a computer. If formatting matters to how you study, compose on desktop.
Watch the calendar around AP season. Practice rooms and mock exams are most valuable when there is enough time for spaced repetition to work. The product's own framing is built around the May AP cycle.
High school students, particularly AP candidates. The clearest fit by a wide margin. The AP module's depth, the free flashcard core and the existing community library align precisely with this group's needs.
University students in recall-heavy subjects. Anatomy, pharmacology, languages, law — anywhere volume memorisation is unavoidable, the lecture-to-flashcard pipeline plus spaced repetition earns its place.
Students leaving a paywalled flashcard tool. If your objection to an incumbent is that core study modes now cost money, the unlimited free learn mode is a direct substitute, and set import means you do not start over.
Teachers wanting AI in class with oversight. The monitored AI chat activities plus auto-graded assessments, backed by explicit FERPA, SOPPA and §2-d handling, make this deployable in a school context rather than only individually.
Who should look elsewhere: anyone under 13, who cannot use the service at all; under-18s who cannot obtain verifiable parental consent, since that gates all AI functionality; students needing a non-English interface; anyone whose subject is worked rather than memorised; and anyone requiring documented encryption of stored data, given the Google Play disclosure discussed below.
Knowt runs on the web, iOS and Android, with the homepage offering all three entry points side by side.
The iOS app is published by Knowt Inc. as "Knowt: AI Flashcards & Notes", currently version 3.20.0 as of 19 August 2026, requiring iOS 16.4 or later. It first shipped on 13 October 2023 and is listed under Education and Productivity. The App Store lists English as its only interface language, so expect an English UI regardless of what language you study in. It is rated 4+ with no content advisories at all — appropriate for a product whose primary audience is school students.
On Google Play the package is com.knowt.app, with more than 500,000 downloads and a content rating of Everyone 10+. The two stores rate the app slightly differently (4+ versus 10+), but both place it firmly in general-audience territory.
One platform disclosure deserves specific attention. Google Play's Data safety section reports four items: no data shared with third parties, the app may collect certain data types, users can request data deletion — and data is not encrypted. For a product whose users are largely minors and whose stored content includes personal notes and study records, that fourth item sits awkwardly alongside the company's otherwise substantial compliance posture. It is a developer-provided declaration rather than an audit finding, but it is the disclosure the platform publishes.
Pricing is published at /plans rather than the more common /pricing, split into student and teacher views.
| Plan | Price | What it adds |
|---|---|---|
| Basic | Free | Create notes & flashcards, free study modes, custom hints and multiple-choice options, browse the shared library |
| Ultra — Annual | $12.49/mo, billed $149.99 upfront | Unlimited AI summaries & teacher tools, unlimited Kai chats, monitored AI chat activities, auto-graded assessments, AP mock exams |
| Ultra — Monthly | $24.99/mo | Same as annual |
The annual plan is marketed as saving 50% against monthly, which the arithmetic supports: $149.99 per year versus $299.88 at the monthly rate.
What you actually pay for. The upgrade is essentially about AI volume and classroom administration: unlimited AI summaries, unlimited Kai conversations, unlimited monitored AI chat activities, unlimited auto-graded assessments, extra assessment question types and assignable AP mock exams. Flashcards, notes and the study modes are not gated. That is a genuinely different freemium boundary from tools where core studying is the paywall.
Refunds are narrow, and the two official documents disagree. The pricing page states that within 24 hours of purchase or renewal you get a full refund minus about 3.5% in transaction fees, arriving in 5–10 business days. The terms of service instead give 48 hours. Where official documents conflict, plan around the shorter window.
In-app purchases cannot be refunded by Knowt. Purchases made on iOS or Android must be refunded through Apple or Google respectively — Knowt directs users to the platforms' own processes.
Promotional coins can void your refund. After the free trial converts and the first payment is made, subscribers receive promotional coins redeemable for merchandise in the Knowt shop. Once redeemed, the subscription is no longer refund-eligible.
Cancellation is a deliberate act. In-app: Settings → Your Plan → Cancel Subscription → complete a short form → submit. The terms note in capitals that periodic charges may continue without further authorisation until notice is given.
The obvious comparison is Quizlet, which Knowt names directly and repeatedly. On the App Store Quizlet holds 4.78 from 1,103,367 ratings against Knowt's 4.73 from 10,295 — near-identical satisfaction at wildly different scale. The practical difference is what costs money: Knowt's pitch is that learn mode and the study core stay free.
The same App Store search surfaces a crowded field: Knowunity, Noji and Gizmo all occupy adjacent ground with ratings between 4.57 and 4.76. This is not a category with one obvious answer, and the ratings spread is too narrow to separate them.
Anki deserves mention for serious spaced repetition users — it is free, open source and far more configurable, at the cost of a much steeper learning curve and no AI generation.
The useful way to choose is by what gates payment. If your requirement is unlimited free study modes with occasional AI help, Knowt's boundary is favourable. If you need heavy AI summarisation, its paid tier is priced comparably to competitors. If you need a non-English interface or subject coverage outside recall-based study, look elsewhere entirely.
Under-18s need verifiable parental consent for anything AI. The terms require users to be at least 13, and separately require verifiable parental or guardian consent before any under-18 uses AI-incorporating functionality. Given that the AI features are the paid tier's entire value proposition, this is a substantive gate for the product's core demographic, not a formality.
Google Play reports that data is not encrypted. Among the four Data safety items disclosed, this is the one worth weighing. It coexists with genuine compliance work elsewhere — COPPA, FERPA, SOPPA, New York §2-d, CCPA opt-out and European data protection rights are all addressed — which makes the encryption disclosure more conspicuous rather than less.
The AI training commitments are narrower than they first appear. The privacy policy contains three statements about not using data for AI/ML development or training. All three are scoped specifically to Google user data and Google Workspace APIs. This review found no equivalent commitment covering the notes, PDFs and recordings users upload generally. That is not evidence such content is used for training — it is an absence of a stated commitment, and the distinction matters. Confirm the current policy text if this is decisive for you.
Library quality is uneven and often stale. The shared library is a real asset, but the homepage's own sample tells the story: several featured flashcard sets show ratings of 0.0 with zero reviews, and update timestamps ranging past 1,200 days. Community content is unvetted by nature; verify anything you rely on against your own course material.
Every headline number is vendor-reported, and they contradict each other. Users are variously described as 5 million+, 1,000,000 and 7 million across the site and app store listing. The "50% of all AP students" claim rests on the company's own count of 700,000 out of 1.3 million. None of it is independently audited.
The "#1" claim has no external basis. No independent ranking, award or assessment supporting it was found.
Testimonials on the homepage are self-selected. The site displays a wall of anonymous praise and cites "4.8 Stars, 6,200+ Reviews" without linking to a verifiable source. The app store figures — 4.73 from 10,295 on iOS and 4.51 from 8,425 on Google Play — are the numbers that can be checked, and the Google Play average is meaningfully lower than the figure the homepage advertises.
Independent editorial coverage could not be found. No verifiable reporting from an established technology or education publication surfaced. What searches returned were company databases with inconsistent unsourced data, founder podcast interviews (self-description, not independent assessment) and affiliate-style review sites. Widely circulated claims about the founder, founding date and funding are therefore not repeated on this page.
Trustpilot data is unusable here. The profile shows 2.8 from just 7 reviews, is unclaimed, and the company has never solicited reviews. Seven reviews cannot support a quality conclusion in either direction. For context, Quizlet scores 1.4 from 643 reviews on the same platform, suggesting the category performs poorly there generally.
A documented mobile formatting bug. A Google Play reviewer reports that italic, bold and underlined text does not appear in the mobile app while rendering correctly on desktop, describing it as consistent rather than intermittent. This is one user's account, not a measured failure rate.
Automatic FRQ grading is undocumented. Free-response grading is offered but neither its method nor its accuracy is published, and no independent evaluation exists.
Disputes go to confidential arbitration. The terms contain a mandatory arbitration provision and jury trial waiver. Arbitration is conducted in English under AAA rules in New York, New York, and all aspects of the proceeding and any ruling are strictly confidential.
English interface only. The App Store lists English as the sole interface language, despite the shared library containing user content in multiple languages.
Genuinely free for its core. The Basic plan includes creating notes and flashcards, the free study modes, custom hints and multiple-choice options on flashcards, and browsing the shared library of millions of resources. Learn Mode specifically offers unlimited rounds at no cost. Payment buys AI volume and teacher tools, not access to studying.
Unlimited AI summaries and teacher tools, unlimited chats with Kai, the ability to create unlimited monitored AI chat activities for students, unlimited auto-graded assessments, additional assessment question types, and assignable AP mock exams and practice. It costs $24.99 monthly, or $12.49 per month billed annually at $149.99 upfront.
Yes. The App Store description states you can create sets with the AI flashcard maker or "grab some from popular sites like Quizlet", so migration does not require rebuilding your library. Note that the "#1 Quizlet alternative" framing is Knowt's own marketing claim with no independent ranking behind it.
Yes, and it has two levels. You must be at least 13 to use the service at all. Separately, if you are under 18, Knowt states it must obtain verifiable parental or guardian consent before you use any functionality incorporating AI. Since the AI features are what the paid tier sells, this affects most of the product's differentiating capability for younger students.
The privacy policy makes three explicit non-training commitments — no use of Google user data for AI/ML development, improvement or training; no use of Google Workspace APIs for training generalised models; and no transfer of Google user data to third-party AI tools. All three are specific to Google data. This review found no equivalent statement covering uploaded notes, PDFs or recordings in general. Check the current policy directly if this matters to your decision.
The company addresses this seriously: the privacy policy has a dedicated school section covering FERPA, Illinois SOPPA and New York Education Law §2-d, and commits that student records will not be sold or released for commercial purposes, with rights to inspect, correct and control disclosure. There is also a COPPA section for younger users. Against that, Google Play's Data safety disclosure states data is not encrypted — worth weighing for institutional adoption.
Four components: an AP Exam Hub with study guides and flashcards, a Practice Test Room with unlimited problems, a Free-Response Room with automatic FRQ grading, and an AP Score Calculator. ACT and SAT preparation are also offered. Treat automatic FRQ grading as practice feedback rather than score prediction, since neither its method nor its accuracy is documented.
The pricing page offers a full refund minus roughly 3.5% in transaction fees within 24 hours of purchase or renewal, arriving in 5–10 business days; the terms of service state 48 hours, so plan around the shorter figure. Purchases made through iOS or Android cannot be refunded by Knowt and must go through Apple or Google. Redeeming promotional coins for merchandise permanently forfeits refund eligibility. Cancel in-app via Settings → Your Plan → Cancel Subscription.
Web, iOS and Android. The iOS app requires iOS 16.4 or later and is rated 4+; the Android package com.knowt.app has passed 500,000 downloads and is rated Everyone 10+. The interface is English-only. One reported mobile caveat: a Google Play reviewer says italic, bold and underlined text does not render in the mobile app while working on desktop.
Treat the site's own figures with caution — it publishes 5 million+, 1,000,000 and 7 million users in different places, and the "50% of AP students" claim is its own count, unaudited. The verifiable numbers are the app store ratings: 4.73 from 10,295 ratings on iOS and 4.51 from 8,425 on Google Play, both substantial samples indicating genuine user satisfaction. Trustpilot's 2.8 comes from only 7 reviews and supports no conclusion. No independent editorial coverage was found.
