Lernix AI is an AI study app for iPhone, iPad, Android, and the web. You give it the material you already study from. It gives you a study pack you can review and practice with.
This guide walks through every feature as it works today, in the order you will meet it: what goes in, what comes out, how to practice, and how to keep it organized. It was rewritten in October 2026 to match the current app.
Part 1: What you can add
Every material starts with one source. Tap Create or the + button and pick one.
Slides, a textbook chapter, a paper, a handout. One file of up to 500 pages. Typical analysis finishes in 8 to 10 seconds.
YouTube
Paste a link to a lecture, tutorial, or explainer. Videos of around an hour or less work best, and the video needs captions. If a video has no usable captions, Lernix tells you and you can try another one.
Images
A photo of the whiteboard, a scanned page, a screenshot of a problem, or a page from a physical book. Lernix reads the text and diagrams and builds the pack from them.
Text
Paste the notes you typed in class, a handout, or any text you want turned into practice.
Audio
On iPhone and iPad, record a lecture inside the app. Speech is transcribed live on the device, and you can pause, resume, and review the transcript before you generate. On Android and the web, upload a recording you already have, such as an mp3, m4a, wav, or similar file.
Choose the study language first
Above the Generate button, pick the language the pack should be written in. It starts as your app language. Change it when the lecture is in one language and you want to review in another. Lernix can write the pack in 34 languages.
Part 2: What you get back
Each material becomes one pack with the same parts.
Smart Notes
Structured notes with an overview, chapters, and key takeaways. You can copy them, edit them when the professor said something the slides did not, and translate them into another language later.
Visual Note
A one-page, 16:9 infographic of the 3 to 6 core points, drawn automatically after the notes. Open it full screen, zoom in, and save it to your photos. Details: Visual Notes.
Flashcards
Tap a card to flip it. Swipe right for Got it, left for Review. At the end you see a mastery rate and can study the deck again. The Review pile is where your next session should start.
Quizzes
Multiple-choice and true-or-false questions with instant feedback on every answer, a results screen, and a Try Again button.
Mind Map
A map of the material you can zoom, fit to the screen, and save to your photos. Useful for the blank-page test: close the app and redraw it from memory.
Ask AI
A chat for that one material. It tutors from the notes you generated, so “what did the professor mean on this slide” gets an answer tied to your source. Use it to understand a wrong quiz answer. Messages can be up to 4,000 characters.
Lernix does not schedule reviews or send review reminders. You decide when to come back. For a schedule that works, see active recall and spaced repetition with AI flashcards.
Part 3: Step by step
- Sign in. Use Google or Apple sign-in on app.lernixai.com, the App Store app, or the Google Play app. One account works everywhere.
- Create a material. Tap Create, pick a source, choose the study language, and tap Generate.
- Wait about 10 seconds. You can leave the screen. Generation continues in the background, and the app can notify you when the pack is ready.
- Read the notes once. Open Smart Notes and the Visual Note. Fix anything missing with Edit.
- Practice. Flashcards first, then a quiz. Ask AI about anything you missed.
- Organize. The Library lists every material with search. Create folders per course, rename them, and add or remove materials without deleting the original.
Part 4: Pro tips
- One material per lecture or chapter. Then flashcard and quiz results tell you which lecture is weak instead of averaging everything together.
- Edit the notes before you drill. Cards and quizzes are only as good as the notes behind them. Generated notes are a draft, so check names, numbers, and formulas against the original.
- Save the Visual Note and mind map to your photos. They are the fastest last look before an exam.
- Translate instead of re-uploading. A note in one language can be translated later, so one upload serves a bilingual class.
- Keep the pack separate from graded work. Flashcards and quizzes from your own lecture material are studying. Check your course’s AI policy for anything you submit. See Is using AI to study cheating?
Free and Premium
Every new account gets 2 free starter materials, with no expiry. Flashcards, quizzes, and a mind map for those materials are included, along with a limited number of Ask AI questions, one translation, and two edits per starter material.
Premium removes the limits: unlimited materials, Ask AI, translations, and edits. One subscription works on web, iOS, and Android. Subscribing on the web costs less than in the app stores. Current plans are on the pricing page.
Frequently Asked Questions
Which file formats work?
PDF for documents, and PNG, JPG, WEBP, and HEIC for images. Word and PowerPoint files are not accepted directly. Export them to PDF first, which both apps can do in one step.
Can I record a lecture on Android or the web?
No. In-app recording with live transcription is on iPhone and iPad. On Android and the web, upload an audio file instead.
Can I export my notes?
Copy Smart Notes to the clipboard and paste them anywhere. Save the Visual Note and the mind map as images to your photos. There is no PDF or Markdown export.
Which languages does Lernix support?
The app and website are available in 33 languages, and study packs can be generated in 34, including Cantonese. Details: choose your study language before you generate.
How is Lernix different from a chatbot?
A chatbot answers questions. Lernix turns a source into a pack you can practice with, and keeps the chat tied to that source. For the comparisons, see ChatGPT Study Mode vs Lernix AI and NotebookLM vs Lernix AI.
Start with one material
Open app.lernixai.com, or get Lernix AI on the App Store and Google Play. Upload one lecture, read the notes once, and run the flashcards tomorrow.