Memory Palace vs majors23
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Memory Palace
Create and organize memory palaces using text, photos, and panoramas. Review your routes step-by-step to enhance recall for speeches, lists, and sequences. This tool focuses on the memory palace structure and review flow.
- Create palaces and loci
- Use photos as visual references
- Mark loci on images/panoramas
- Combine text, photo, and panorama loci
- Refine locus order
- Step-by-step route review
- Walkthrough mode
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Build memory palaces with ordered loci, photos of places, and supported real-world panoramas — then review your palace route step by step. Memory Palace is a focused Method of Loci tool for building stable palace routes and keeping your loci and visual references organized in one place. A palace can be as simple as an ordered list of text-only loci. It can also be visual: import photos of rooms, streets, landmarks, or other places, add supported panorama scenes, mark one or more loci on an image, and keep those loci in the same palace route. Some loci may remain text-only when a photo or panorama is unavailable, or when the place exists only in your imagination. Create and manage your palace • Create palaces and loci • Use photos of places as optional visual references • Mark one or more loci on a photo or panorama • Keep text-only, photo-based, and panorama-based loci in one palace route • Refine the order of loci while building your palace route • Review existing palace routes without hunting through spreadsheets, documents, or annotated image files Review the palace route • Move through loci one by one in Walkthrough mode, following the same palace route each time • Revisit the visual reference when a locus has one • Return to saved panorama views for supported panorama loci Good for material with an order — or material you choose to arrange into one • Speeches, presentations, and scripts • Ordered lists, checklists, and procedures • Timelines, historical sequences, and event chains • Exam outlines, classification systems, and frameworks • Poems, quotations, passages, and other ordered content • Terminology or vocabulary lists you choose to organize into a route Memory Palace does not try to become another notes app, brain game, or deck-first flashcard app. It focuses on the memory palace structure and review flow: palaces, ordered loci, optional visual references, and Walkthrough mode. Memory Palace keeps the palace structure. You choose what each locus is meant to cue in your own memory. Built from real memory-sport practice: after placing 6th overall at the 2011 World Memory Championship, the creator built Memory Palace to solve a practical problem — keeping thousands of loci across more than a hundred palaces organized over years of use. Start with a palace, create your first locus, and walk the palace route to remember. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
majors23
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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.
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Verdict
The clearest difference is in-app purchases: majors23 at none against Memory Palace's 2. majors23 also leads on update cadence (every 5 days vs fortnightly). 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
Both are free to download. Memory Palace sells 2 in-app purchases, starting at $4.99 per month. majors23 asks for nothing beyond the download.
Memory Palace ships an update fortnightly, majors23 every 5 days. Both last shipped on October 31, 2026.
| Parameter | Memory Palace | majors23 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 17 |
| Further details — not scored | ||
| Size | 46 MB | 139 MB |
| Age rating | 4+ | 4+ |
| Developer | 剑津 付 | JAE HO YOON |
In-app purchases
Memory Palace
- Premium Monthly$4.991 Month
- Premium Annual$39.991 Year
majors23
No in-app purchases








