A Seoul-built research workspace that turns YouTube links, PDFs, web pages, audio, video and live recordings into structured reports where every line links back to the exact sentence, page or timestamp it came from.
LilysAI is an AI research and consulting tool that summarizes, extracts insights, and answers questions based on your materials, not a general chat assistant prompted from scratch. You can upload YouTube links, video/audio files, PDFs, documents, text, and webpages, and live recording minutes are also supported. Sources sit on the left of a project, the report in the middle, and every line points back at where it came from.
The privacy policy names the operator as LilysAI, Inc. together with its affiliates, including LilysAI Korea Inc. The Korean homepage footer identifies the Korean entity in full — 주식회사 릴리스에이아이, representative 오현수, business registration number 355-87-03209, a Seocho-gu address in Seoul — where the English footer stops at "LilysAI, Inc. | admin@lilys.ai". The terms of service exist in Korean only, in force since 3 October 2024; a signed Korean trade report from July 2024 dates the founding to 2023, by engineers previously at Naver, Voyager X and Wrtn.
Self-reported figures differ by surface: the English homepage says the product is loved by 1.2M+ leaders, investors, researchers, learners, while the company profile on a third-party launch platform still reads "reaching 600,000 users in just one year" — two vendor statements from different dates, not a growth curve. An independent directory estimates roughly 1.3M monthly desktop visits for December 2024 to August 2026, 86.08% from South Korea.
Since the 31 March 2026 redesign, report generation splits in two. Summary covers the types formerly called Detailed, Key and Easy. Expand goes beyond simple summarization, generating Mind Map, Background Knowledge, Counter Perspective, Action Items, Infographic, Animation and Flashcards. Shape is set separately: the Custom menu on the right specifies length, difficulty, and scope.
Clicking a reference will highlight the corresponding part of the source in the right-hand source viewer, and in that viewer a number acts as a timestamp, so video and audio jump straight to the referenced moment. Underlined terms open a gloss, and you can highlight a word or phrase and click "Explain Clearly" to add a new key term explanation.
Translation reaches the raw material, not only the output: the product offers translation of the original source, not just the summary, and PDF translation preserves the original document layout. When captions are unreliable, Improve Voice Accuracy re-runs the audio, and it is applied automatically whenever you upload a video or audio file.
Reports export to PDF, DOCX, Notion, JSON and Markdown, with switches for source references and timestamps. Sharing has two permission levels: anyone with the link, or link plus password.
Storage behaves like a cloud drive and only frees up when you delete: a deleted project goes to Trash and the space returns once Trash is emptied. Clicking the "X" on a source tab in the viewer only closes the tab visually, so the file and its storage stay.
An AI PDF summarizer that only returns prose covers half of each of these; what changes the workflow is that report, transcript and original stay linked on one screen.
A good fit when:
A weaker fit when:
| Surface | State captured this round | Notes |
|---|---|---|
| Web app | Primary surface | Optimized for Google Chrome; Whale may cause errors |
| Chrome extension | v1.3.1, updated 21 April 2026, 270KiB | 4.7 out of 5 from 48 ratings, around 60,000 users |
| Android app | Updated 9 August 2026, 10K+ downloads | Content rating Everyone, listed under Productivity |
| iOS app | v1.0.4, released 10 August 2026 | First published 3 April 2026, free, rated 12+, iOS 15.0 minimum |
| Notion | Export target | Connect the account, pick the destination database, export in a click |
The Android build was announced in March 2026 alongside a YouTube channel subscription that generates a summary note automatically whenever a subscribed channel posts. Review volume follows the Korea-first pattern: in the Korean App Store the app carries 4.7 out of 5 across 20 ratings, while the US storefront shows 0 ratings for the same build. Interface, source and summary languages cover English, Korean, Japanese, Chinese, Spanish, Portuguese, Italian, German, French, Indonesian and Vietnamese; the Chrome extension listing declares only two, English and 한국어.
Individual tiers are Starter, Basic and Pro, plus a Business plan for teams. The comparison lives on the pricing page, which the help centre flags as desktop-only: the comparison table is not supported on mobile. That page is rendered entirely by client-side script, so per-tier prices and quotas were not captured in this round and no such figures appear here.
| Rule | What the documentation says |
|---|---|
| Billing cycle | Annual billing offers a 20% discount compared to monthly billing |
| Renewal | Paid plans automatically renew until canceled |
| Cancellation | Paid features stay available until the end of the current billing cycle |
| Refund | Full refund only if no paid features were used and the request is within 7 days of payment |
| Upgrade | Immediate and charged immediately, old plan refunded pro rata for the remaining cycle |
| Downgrade | Takes effect after the current billing cycle ends |
| Cycle switch | Effective next billing period, unless no summaries were used within 7 days |
The terms restate the refund window more strictly than the help article, allowing withdrawal within seven days of payment only where the paid service has not been used at all. Monthly charges recur on the same calendar date, falling on the last day of any month that lacks it.
Anyone comparing LilysAI alternatives is choosing between three product shapes, and their documented limits differ more than the marketing does.
No independent English-language review was found through the review platforms, trade media and community channels checked on 17 September 2026, so the comparison rests on published limits.
Storage is cumulative and recoverable; processing time is not. Upload time resets every month based on your billing date, but once time is used, it cannot be restored — even if you delete the file, with server and API costs given as the reason.
Account sharing is not allowed under the current terms, and the fair-use clause goes further: where unusually heavy usage or shared login details are reasonably suspected, the account may be blocked or permanently deleted without prior notice and with no refund. Data and subscriptions cannot be transferred between accounts.
The age rules do not line up across channels, and this page does not resolve them. The help centre says users under the age of 14 are not allowed to use the service, while article 4 of the terms says a user under that age may create an account where a parent or legal guardian consents, and separately requires guardian consent for anyone under 19 entering a paid contract.
The terms also state that the company does not guarantee the legality, originality, exclusivity, reliability, accuracy, truthfulness, usability or fitness for a particular purpose of AI outputs, and does not warrant that results do not infringe anyone's copyright or other intellectual property.
All intellectual property rights a member holds in their content remain with the member, notes stay private until shared, and the homepage states that data is fully encrypted in transit and never used for AI model training, with SOC 2 certification in progress — the Korean security page specifies Type II.
The wording on training is not identical across pages. The Korean security page states that because models run under enterprise contracts with Microsoft, Google and Anthropic, user input is not used for AI model training, and names AWS RDS for storage and Firebase Auth for authentication. The English privacy policy qualifies it: content is not used to train foundation AI models without your explicit consent, and a separate Korean consent page says service-improvement data is never used for AI model training even where the user agreed. Only the English policy leaves a consent-shaped opening.
That policy lists AI model providers — OpenAI, Anthropic, Google, Microsoft, Soniox, Groq and pyannote AI — as processing submitted content to produce the outputs you request, and keeps payment records up to 5 years and consumer dispute records up to 3 years.
You can start for free and keep your data, but on the Free plan you can only view projects and reports created within the last 30 days. Older projects are hidden rather than deleted and reappear on resubscribing.
For all plans, each file must be under 2GB. Total storage depends on the plan, and those figures live on the pricing page, which was not captured this round.
Only if no paid features were used and the request comes within 7 days of payment. Upgrades are different: the old plan is refunded pro rata automatically.
The Korean security page says user input is not used for AI model training; the English privacy policy says content is not used to train foundation AI models without your explicit consent. The two wordings differ in scope.
No. Account sharing is not allowed under the current terms, and suspected credential sharing can end in the account being blocked or permanently deleted without notice and without a refund.
