Number Memory 25 vs PASSCODES
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Number Memory 25
This brain training app helps improve memory by challenging users to memorize and recall sequences of numbers. Regular, short practice sessions can enhance visual memory and cognitive skills.
- Memorize and recall number sequences
- Visual memory training
- Daily 30-second practice
- Progressive difficulty
- Simple, challenging gameplay
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Can't remember your phone number? Can't remember your postal code? If you've had these experiences, you may be experiencing a decline in memory! This is a simple but challenging brain training app for those who want to improve their memory. By repeating it once a day for 30 seconds for a week, you can train your memory. The rules are simple. First, quickly memorize the numbers displayed. Then, recall and input the numbers in order. The numbers are not displayed for a long time. Let's use visual memory to quickly memorize the numbers! So, how many numbers can you remember?
PASSCODES
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Aim for the world's number one instantaneous memory! Infinite Passcode is a super-simple game in which you simply memorize the passcode displayed on the screen and type it in. This game is perfect for activating the brain, improving memory, strengthening concentration. You can also see your memory rank in the world ranking. Please try it while you are on the move, in the middle of a boring meeting, or while waiting at the hospital!
Screenshots
Verdict
The clearest difference is price: PASSCODES at Free against Number Memory 25's $0.99. PASSCODES also leads on in-app purchases (none vs 1). Number Memory 25's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
PASSCODES is free to download; Number Memory 25 costs $0.99 up front. Number Memory 25 sells 1 one-off in-app purchase. PASSCODES asks for nothing beyond the download.
Number Memory 25 ships an update every 3 weeks, PASSCODES every 2 months. The most recent releases landed on September 2, 2026 and May 17, 2026 respectively.
| Parameter | Number Memory 25 | PASSCODES |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | T&T United Inc. | KENICHI YAMAMOTO |
In-app purchases
Number Memory 25
- Unlock AllFree
PASSCODES
No in-app purchases
