Synapsi vs uFlash
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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
uFlash
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uFlash: Modern flashcards made simple again. Make your cards. Flip through them. Set aside the ones you know and keep practicing the rest. uFlash brings that familiar way of studying to your iPhone and iPad. Create decks in the app or import them from a spreadsheet, then get straight to studying. Itβs easy to learn, whether youβre reviewing vocabulary, preparing for an exam, or brushing up on a subject you enjoy. STUDY AT YOUR OWN PACE Reveal an answer and mark it Known or Unknown. When you want to focus on the harder cards, review just the ones that need more practice. You decide what to study and when. YOUR DECKS BELONG TO YOU You put time into making your flashcards. You should be able to keep them, edit them, and share them wherever you like. Thatβs why uFlash uses standard CSV files. Open your decks in Apple Numbers, Microsoft Excel, Google Sheets, or any text editor. Make changes in a spreadsheet, back up a copy, or send a deck to a classmate. Your cards stay in a format you can use outside the app. FEATURES β’ Create unlimited study topics with custom decks β’ Create and edit flashcards in the app β’ Import and export standard CSV files β’ Reveal answers and mark cards Known or Unknown β’ Review only the cards that need more practice β’ Choose Light or Dark Mode β’ Enjoy a fast, lightweight app thatβs easy to learn NO ADS. NO SUBSCRIPTIONS. uFlash is built around a simple idea: studying with flashcards should be easy. Open a deck and get started.
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Verdict
The clearest difference is in-app purchases: Synapsi at none against uFlash's 4. Synapsi also leads on update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. uFlash sells 4 one-off in-app purchases. Synapsi asks for nothing beyond the download.
Synapsi ships an update daily, uFlash weekly. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.
| Parameter | Synapsi | uFlash |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily β better | Weekly |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, Mac β better | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 β better |
| Further details β not scored | ||
| Size | 45 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Khoa Tran | Aaron Fenker |
In-app purchases
Synapsi
No in-app purchases
uFlash
- Donut Tip$1.99
- Beer Tip$4.99
- uFlash Pro$9.99
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- Burger Tip$9.99









