Comparison

majors23 vs Flashy

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

Head to head
About

majors23

Features
Read full description

Stop forgetting numbers. Start seeing them. majors23 teaches you the Major System — a proven mnemonic technique that converts digits into consonant sounds, which you then turn into vivid words and images. Phone numbers, PINs, dates, historical years, mathematical constants: anything becomes a picture you can't unsee. HOW IT WORKS Each digit 0–9 maps to a phonetic sound. Two digits make a word. That word has an image. Your brain remembers images far better than abstract numbers — that's the whole trick. FOUR TABS. ONE SYSTEM. Reference Browse all 100 number-image-word associations in a 5-column grid. Hide numbers, pictures, or words to self-test. Tap any cell to reveal it. Read aloud with built-in voice playback — hear the number and word spoken together at adjustable speeds. Double-tap anywhere to stop. Generate Type any sequence of digits and instantly see the matching image-word pairs. Perfect for encoding phone numbers, PINs, or constants like Pi and Euler's number. Copy the words or a learning prompt in one tap. Save any sequence with your own visual story sentence for later review. Quiz Test yourself in two directions: Number → Image or Image → Number. Choose multiple choice or type-in answers. Target any range of numbers, drill specific digit combinations with Matrix mode, or let the app automatically surface your weakest numbers in Difficult mode. Quit any time without affecting your stats. Stats Track accuracy and average response time for every number across both quiz types. Sort by any column to spot your blind spots at a glance. FEATURES 100 hand-curated mnemonic images Voice reading with number + word spoken aloud Configurable quiz: range, matrix, or difficulty-based selection Unlimited questions with automatic recycling Persistent stats saved on-device Day and night display modes No account required — everything stays on your device Whether you are preparing for a memory competition, trying to memorize your passport number, or just curious about how memory athletes think, majors23 gives you the full toolkit. Start with 00. You will never forget Zeus again.

About

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.

Highlights
  • 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
Features
Read full description

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 your first deck and 20 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

majors234 screens
Flashy4 screens

Verdict

The call

The clearest difference is in-app purchases: majors23 at none against Flashy's 1. majors23 also leads on update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Flashy sells 1 one-off in-app purchase. majors23 asks for nothing beyond the download.

UpkeepUpdate frequency

majors23 ships an update every 5 days, Flashy every 3 weeks. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

Scorecard2 real differences · 8 level
majors23 versus Flashy: the parameters behind the verdict, then further details
Parametermajors23Flashy
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone
Requires iOS1716.4 — better
Further details — not scored
Size139 MB93 MB
Age rating4+4+
DeveloperJAE HO YOONArgon Labs LLC

In-app purchases

None

majors23

No in-app purchases

1 purchases

Flashy

One-time1
  • Flashy Unlimited$4.99

Questions

Is majors23 free?
majors23 is free to download, with no in-app purchases.
Is Flashy free?
Flashy is free to download, with in-app purchases available.
Do majors23 or Flashy have ads?
Neither majors23 nor Flashy shows ads.
Which is updated more often, majors23 or Flashy?
majors23 ships an update every 5 days, and Flashy every 3 weeks. Most recently, majors23 was updated on October 25, 2026 and Flashy on October 23, 2026.

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