Katav vs Synapsi
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Katav
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Katav is an AI-powered notes app designed for students who want to study smarter and remember more. Capture every class with notes and audio, then let Katav's AI turn your lecture into organized knowledge, ready to review. Record during class, get an accurate transcript automatically, and let Katav summarize the key ideas so you know exactly what to study. Connect concepts across your subjects to build a clear understanding from the first week all the way to finals. Your classes become a structured knowledge base to review, study, and retain throughout the entire course. Why students love Katav: โข Record & Transcribe: Hit record in class and instantly get a searchable transcript. Find any detail fast when studying. โข AI Summaries: Turn long lectures into concise summaries that highlight what matters most, so your review sessions are more focused and efficient. โข Smart Notes: Write your notes in class and use AI to enhance them, add structure, and surface key concepts. โข Organized by Subject: Every class is saved under its subject, keeping your semester tidy and easy to navigate. โข Spaced Repetition Review: Study with quizzes and flashcards generated from your own classes. Spaced repetition helps content stick long after class ends. โข Stay on Track: Build study streaks, earn points, and keep your momentum with a learning experience designed to bring you back every day. โข Exams & Assignments: Keep upcoming exams and assignments in sight so deadlines never catch you off guard. โข Works Offline: Access your notes and classes without a connection. Everything syncs automatically when you're back online. Made for the way you learn โข Katav is your study companion from the first class to the final exam. Capture more in class, understand faster, and remember longer. โข Available in English, Portuguese, Spanish, French, Arabic and Hebrew. Study smarter. Remember more. Download Katav and turn your class notes into knowledge that lasts. Terms of Use (EULA): https://www.katavnotes.com/en/terms
Synapsi
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Most study apps make the flashcards. Synapsi checks you actually learned them. Turn any lecture, PDF, or YouTube video into AI flashcards, a quiz, a summary, and a mind map in seconds. Then prove you know it: Synapsi runs real spaced repetition and an AI-judged Feynman teach-back that grades whether you can explain the idea in your own words. MORE SOURCES, SAME STUDY KIT Synapsi also reads web articles and short video links from TikTok, Instagram, X, and Facebook. Paste the link, get the transcript and the full study kit. Free tools (transcript, summarizer, flashcard maker) live at synapsi.guru/tools and need no account. Synapsi is free to download and includes a free preview: your first study kit, with a sample of its flashcards, quiz, and summary. Full study kits and the AI study tools below require a Synapsi Pro subscription or one-time lecture credits. WHAT SYNAPSI DOES (requires Pro or lecture credits) AI flashcard maker: auto-generate flashcards from any source. PDF to flashcards, YouTube to flashcards, lecture notes to flashcards. Spaced repetition that works: a real SM-2 system schedules reviews at the right time so facts stick. Built for exam prep and revision. Quiz generator: turn your notes into a practice quiz with instant feedback. AI summarizer: get a clean summary of a long PDF or hour-long lecture in seconds. Mind map generator: see how ideas connect with a visual mind map of your material. YouTube transcript and notes: pull the transcript from any video and turn it into study notes, flashcards, and a quiz. Feynman teach-back: explain a concept, and the AI judges your answer against the source and shows your gaps. If you can't explain it, you haven't learned it yet. AI study chat: ask questions about your own notes and get answers with citations. Smart reminders: one nudge a day, built from what is actually due. Set an exam date and Synapsi counts down to it. PERFECT FOR - Students cramming for exams and finals - College and university revision - Med, law, and language learners - Anyone who reads PDFs or watches lectures and wants to remember them WHY IT WORKS Making flashcards feels like studying. It isn't. Real learning is recall and explanation. Synapsi uses spaced repetition to make you recall and the Feynman technique to make you explain. Stop highlighting. Stop re-reading. Start proving you learned it. SUBSCRIPTION & CREDITS Synapsi is free to download. Your first study kit is a free preview. Full access requires a purchase: - Synapsi Pro: unlimited notes and every study tool. An auto-renewable subscription billed monthly or yearly (a one-time Lifetime option is also available). Your subscription renews automatically unless canceled at least 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. - Lecture credits: one-time purchases. One credit buys one full lecture's study kit, with no subscription. The current prices and lengths are always shown on the purchase screen before you buy. TERMS & PRIVACY Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://synapsi.guru/privacy
Screenshots
Verdict
The clearest difference is iOS requirement: Katav at 15.1 against Synapsi's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Katav sells 8 in-app purchases, starting at $6.99 per month and Synapsi sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Katav ships an update every 5 days, Synapsi every 3 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.
| Parameter | Katav | Synapsi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.1 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 78 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | William Zimmermann | Khoa Tran |
In-app purchases
Katav
- Katav PRO Monthly$6.991 Month
- Pro7 Days trial$6.991 Month
- Katav MAX Monthly$9.991 Month
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- Pro - Quarterly14 Days trial$19.993 Months
- Katav PRO Annual$29.991 Year
- Katav MAX Annual$44.991 Year
- Pro Yearly1 Month trial$67.991 Year
- 99 Extra Subjects$0.99
Synapsi
- Synapsi Pro Monthly3 Days trial$9.991 Month
- Synapsi Pro Yearly3 Days trial$48.001 Year









