Comparison

Keyoku vs uFlash

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

Head to head
About

Keyoku

Transform your notes and PDFs into interactive flashcards using on-device AI. Organize your study materials into colorful decks, track your progress visually, and build consistent study habits with daily streaks. Ideal for students and professionals preparing for exams or learning new subjects.

Highlights
  • AI-generated flashcards from notes/PDFs
  • Organize decks with custom colors and images
  • Visual progress tracking
  • Daily study streak building
  • Cloud sync across devices
  • Home screen widgets
Features
Read full description

Keyoku turns your notes into flashcards in seconds — powered by on-device AI. Paste text, upload a PDF, or type from scratch. Keyoku instantly generates question-and-answer flashcards so you can start studying right away. Private, fast, and no setup. CREATE WITH AI Drop in your notes or a PDF and choose how many cards you want (10–50). Keyoku uses Apple's on-device intelligence to pull out the key concepts and turn them into clean, study-ready flashcards. Everything runs privately on your device. ORGANIZE YOUR KNOWLEDGE Group flashcards into colorful decks. Pick a theme color, add a cover image, and keep your subjects organized. Find any deck instantly with search. STUDY YOUR WAY Flip through cards at your own pace. Shuffle the order, track your progress with a visual progress bar, and practice entire decks in one session. Simple, distraction-free studying. BUILD A STUDY HABIT Complete a study session each day to grow your streak. Watch your flame build as you stay consistent. Streak freezes keep you covered if you miss a day. MORE FEATURES • Create decks manually or with AI — your choice • Upload PDFs and extract flashcards automatically • Home screen widgets to keep your decks visible • Push notification reminders to stay on track • Sign in with Apple, Google, or start anonymously • Cloud sync across your devices • Dark mode support Haptic feedback Whether you're cramming for an exam, learning a new language, or picking up a professional certification — Keyoku makes it easy to create, organize, and retain what matters. Download Keyoku and start studying smarter today. Privacy Policy: https://boatneck-pickle-bfa.notion.site/Privacy-Policy-4c140d62f69d406eb2906db09dad1781 Terms of Use: https://boatneck-pickle-bfa.notion.site/Terms-of-Service-ef9a22b727d74a07afd8a50a7b3e8e6c

About

uFlash

Features
Read full description

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. It’s easy to learn, whether you’re 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. That’s 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 • Create unlimited study topics with custom decks • Create and edit flashcards in the app • Import and export standard CSV files • Reveal answers and mark cards Known or Unknown • Review only the cards that need more practice • Choose Light or Dark Mode • Enjoy a fast, lightweight app that’s 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.

Screenshots

Keyoku4 screens
uFlash4 screens

Verdict

The call

The clearest difference is iOS requirement: uFlash at 17.0 against Keyoku's 26.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Keyoku sells 2 in-app purchases, starting at $4.99 per month and uFlash sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Keyoku ships an update every 2 weeks, uFlash weekly. The most recent releases landed on September 30, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 8 level
Keyoku versus uFlash: the parameters behind the verdict, then further details
ParameterKeyokuuFlash
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size24 MB7 MB
Age rating4+4+
DeveloperMark MartinAaron Fenker

In-app purchases

2 purchases

Keyoku

Subscriptions2
  • Monthly Subscription7 Days trial$4.991 Month
  • Yearly Subscription7 Days trial$34.991 Year
4 purchases

uFlash

One-time4
  • Donut Tip$1.99
  • Beer Tip$4.99
  • uFlash Pro$9.99
Show 1 more
  • Burger Tip$9.99

Questions

Is Keyoku free?
Keyoku is free to download, with in-app purchases available.
Is uFlash free?
uFlash is free to download, with in-app purchases available.
Do Keyoku or uFlash have ads?
Neither Keyoku nor uFlash shows ads.
Which is updated more often, Keyoku or uFlash?
Keyoku ships an update every 2 weeks, and uFlash weekly. Most recently, Keyoku was updated on September 30, 2026 and uFlash on October 28, 2026.

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