Comparison

NoteTube vs Synapsi

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

NoteTube

Features
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NoteTube is your AI study assistant. Record a lecture live, upload a PDF, paste a YouTube link, or snap a photo of your notes โ€” and instantly turn it into flashcards, quizzes, summaries, notes, and a chat tutor that understands your material. Stop re-reading. Start actually learning. RECORD OR UPLOAD ANYTHING - Record lectures live โ€” NoteTube transcribes as you go - Upload audio files and get an accurate transcript - PDFs and textbooks - YouTube videos and lectures - Photos of handwritten notes or whiteboards - Web articles, blog posts, and pasted text Combine multiple sources into one study session. 5 WAYS TO STUDY FROM YOUR CONTENT - AI Chat โ€” ask questions about your documents and get accurate answers with source references - Flashcards โ€” AI-generated cards with SM-2 spaced repetition that schedules reviews at the optimal time - Quizzes โ€” multiple-choice questions with detailed explanations that turn wrong answers into learning - Summaries โ€” progressive summaries, from full study guides down to quick exam cheat sheets - Notes โ€” structured notes including Cornell and concept maps BUILT ON LEARNING SCIENCE - Active Recall โ€” self-testing beats re-reading for long-term retention - Spaced Repetition โ€” the SM-2 algorithm schedules reviews to defeat the forgetting curve - Detailed explanations on wrong answers build stronger memory than right answers alone 5 AI MODELS, YOUR CHOICE OpenAI GPT, Google Gemini, Anthropic Claude, Meta Llama, and Mistral. STUDY SMARTER FEATURES - Read-along transcripts for your recordings โ€” tap any word to jump to that moment - Quiz analytics โ€” track accuracy, weak areas, and improvement over time - Spaced-repetition scheduling so you never forget what you learned - Progress tracking across every session - Export your flashcards, summaries, and notes PRIVATE & SECURE Your study materials are yours. Encrypted storage, no data selling, full account deletion anytime. CROSS-PLATFORM Start on your phone, continue on the web at notetube.ai โ€” your content syncs everywhere. NoteTube is free to start. Upgrade to Pro for more study sessions, more recording time, and all AI features. Record. Learn. Master. Questions? Email contact@notetube.ai

About

Synapsi

Features
Read full description

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

NoteTube4 screens
Synapsi4 screens

Verdict

The call

The clearest difference is in-app purchases: Synapsi at none against NoteTube's 4. Synapsi also leads on update cadence (daily vs every 6 weeks). NoteTube's advantage is iOS requirement (16.4 vs 18.0). On price, ads and device support 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. NoteTube sells 4 in-app purchases, starting at $9.99 per month. Synapsi asks for nothing beyond the download.

UpkeepUpdate frequency

NoteTube ships an update every 6 weeks, Synapsi daily. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

Scorecard3 real differences ยท 3 level
NoteTube versus Synapsi: the parameters behind the verdict, then further details
ParameterNoteTubeSynapsi
PriceFreeFree
Update frequencyEvery 6 weeksDaily โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad, Mac โ€” better
Requires iOS16.4 โ€” better18.0
Further details โ€” not scored
Size85 MB45 MB
Age rating4+4+
DeveloperAcasa LabsKhoa Tran

In-app purchases

4 purchases

NoteTube

Subscriptions4
  • NoteTube Pro7 Days trial$9.991 Month
  • NoteTube Pro Monthly14 Days trial$9.991 Month
  • NoteTube Pro Yearly14 Days trial$69.991 Year
Show 1 more
  • NoteTube Pro7 Days trial$79.991 Year
None

Synapsi

No in-app purchases

Questions

Is NoteTube free?
NoteTube is free to download, with in-app purchases available.
Is Synapsi free?
Synapsi is free to download, with no in-app purchases.
Do NoteTube or Synapsi have ads?
Neither NoteTube nor Synapsi shows ads.
Which is updated more often, NoteTube or Synapsi?
NoteTube ships an update every 6 weeks, and Synapsi daily. Most recently, NoteTube was updated on September 28, 2026 and Synapsi on September 29, 2026.

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