Unfog vs Flashy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unfog
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Stop rereading the same chapter and hoping it sticks. Unfog turns lectures, PDFs, and videos into real understanding — you explain in your own words, and the app shows exactly what still needs work. The Feynman method, built for your phone: add material, explain it simply (as if to a friend), get honest feedback on gaps, then revise with quizzes, flashcards, and mind maps. WHAT YOU GET ▸ Learn by explaining — voice or typed answers ▸ Honest gap feedback — strengths and weak spots, so revision stays focused ▸ Smart notes — clear summaries from your source material ▸ Quizzes and flashcards — generated from your topic, in your language ▸ Mind maps — see how ideas connect at a glance ▸ Many sources, one place — PDFs, scans, recordings, YouTube, links, pasted text ▸ Shared study spaces — revise with others, like a group session before exams ▸ Built for real sessions — mobile-first, dark mode, English and Polish HOW IT WORKS 1. Add material — a chapter, lecture, or lesson 2. Read smart notes to get oriented 3. Explain it simply, as if to a friend 4. Identify gaps and retry until it sticks 5. Revise with quizzes, flashcards, and mind maps Whether you are preparing for exams, learning a new skill, or revising after a meeting, the loop stays simple: capture → explain → fix gaps → revise. Unfog Pro unlocks full access to study features. Download Unfog and find out whether you truly understand what you just read. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Flashy
This app uses a modern spaced repetition algorithm to help you memorize information efficiently. It offers a free tier with limited cards and a one-time purchase for unlimited access, with no subscriptions or ads. Study vocabulary, exam facts, and more with offline functionality and image support.
- FSRS spaced repetition algorithm
- One-time purchase for unlimited cards
- Offline functionality
- Image support on cards
- Import Anki and CSV decks
- Tagging for organization
- Four-grade review system
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Flashy is the flashcard app that respects your time, your money, and your privacy. Free to download with every feature working. One tiny one-time unlock for unlimited cards — no subscription, no account, no ads. Built on FSRS, a modern spaced-repetition algorithm, Flashy schedules each card for the moment right before you'd forget it. Study a few minutes a day and remember what matters — vocabulary, exam facts, formulas, anything. WHY FLASHY • Honest pricing — free for up to 3 decks and 100 cards, then a single $4.99 purchase unlocks unlimited everything, forever. No subscriptions, no "premium" upsells, no ads. Ever. • Every feature is free — FSRS, imports, images, tags: nothing is locked behind the unlock, only how much you can store. • AI cards on your device — paste your notes and Flashy's built-in AI turns them into flashcards, free and offline. No cloud, no subscription. • Smarter reviews — FSRS spaced repetition plans your reviews so you study less and remember more. • Private by default — your cards live on your device. No account, no sign-up, no ads, no tracking. The only data Flashy sends to us is an anonymous crash report when something breaks. • Works anywhere — fully offline, from airplanes to subways to mountaintops. • Backed up to your iCloud — your decks are copied to your own iCloud automatically and can be restored on a new iPhone. We never see them. EVERYTHING YOU NEED • AI card generation — paste notes or a textbook passage and get a full deck in seconds (on supported iPhones) • Beautiful decks — pick a name, color, and icon for every subject • Fast card entry — "Save + Add Another" keeps you in the flow • Images on cards — add photos to the front or back of any card • Tags — organize cards within a deck and study one topic at a time • Four-grade reviews — Again, Hard, Good, Easy, each with a live preview of when the card comes back • Session summaries — finish with a grade breakdown (and confetti, obviously) • Built-in rating guide — learn how spaced repetition works while you use it • Dark mode — automatic and gorgeous SWITCHING IS EASY Moving from another flashcard app? Import Anki decks (.apkg and .colpkg — images included), CSV spreadsheets, and Anki text exports, or simply copy your set from Quizlet's export screen and paste it in. Your cards come along in seconds. WHO IT'S FOR Students prepping for exams. Language learners drilling vocabulary. Med students memorizing anatomy. Trivia fans, certification chasers, lifelong learners — anyone who wants serious spaced repetition without the complexity, or simple flashcards without the subscription. Try it free. Unlock it once. Study forever.
Screenshots
Verdict
The clearest difference is update cadence: Unfog at every 2 days against Flashy's monthly. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Unfog sells 3 in-app purchases, starting at $2.99 per 7 days and Flashy sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Unfog ships an update every 2 days, Flashy monthly. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.
| Parameter | Unfog | Flashy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 80 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | BITSEC SP. Z O.O. | Argon Labs LLC |
In-app purchases
Unfog
- Unfog weekly$2.997 Days
- Unfog Monthly1 Month trial$17.991 Month
- Unfog Annual1 Year trial$29.991 Year
Flashy
- Flashy Unlimited$4.99









