FeynmanStudy vs majors23
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
FeynmanStudy
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FeynmanAI helps you truly understand any topic by teaching it out loudβthen challenges you with Socratic questions, adaptive quizzes, and smart flashcards. Record your explanation, get instant feedback on gaps, and track comprehension over time. Perfect for exams, professional learning, and lifelong curiosity. What you can do: β’ Speak your understanding; get AI feedback and next questions β’ Turn sessions into spaced-repetition flashcards β’ Quiz yourself with adaptive difficulty β’ Import references via photos or links β’ Track sessions, subsessions, and comprehension trends β’ Works with voice input and transcripts Upgrade to FeynmanAI Premium for unlimited sessions, advanced analytics, and priority features. Your subscription autoβrenews unless canceled at least 24 hours before the end of the period. Manage in Account Settings. Privacy Policy and Terms of Service β’ Privacy Policy: https://towering-cherry-c1e.notion.site/Privacy-Policy-for-FeynmanAI-286f59becbec80869efbdee03bd77158?source=copy_link β’ Terms of Service: https://towering-cherry-c1e.notion.site/Terms-of-Service-for-FeynmanAI-286f59becbec808fadb9fcb2c02c3c97?source=copy_link
majors23
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Stop forgetting numbers. Start seeing them. majors23 teaches you the Major System β 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 0β9 maps to a phonetic sound. Two digits make a word. That word has an image. Your brain remembers images far better than abstract numbers β 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 β 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 β Image or Image β 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 β 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.
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Verdict
The clearest difference is in-app purchases: majors23 at none against FeynmanStudy's 3. FeynmanStudy's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17). On price and ads 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. FeynmanStudy sells 3 in-app purchases, starting at $10.00 per 7 days. majors23 asks for nothing beyond the download.
| Parameter | FeynmanStudy | majors23 |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 17 |
| Further details β not scored | ||
| Size | 53 MB | 139 MB |
| Age rating | 4+ | 4+ |
| Developer | AlphaByte, Inc. | JAE HO YOON |
In-app purchases
FeynmanStudy
- Weekly7 Days trial$10.007 Days
- Monthly1 Month trial$40.001 Month
- Yearly1 Year trial$479.991 Year
majors23
No in-app purchases









