N'Back 10 vs Number Memory 25
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
N'Back 10
Enhance sensory and working memory with this cognitive training tool. It offers various modes and difficulty levels to challenge your recall abilities by matching current stimuli to those from a specified number of steps prior.
- N'Back training (1-Back to 10-Back)
- Flash Mode
- Slow Mode
- Step Mode
- Sequence memorization
- Stimulus matching
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Improve Sensory Memory & Working Memory using N'Back. ◆1'Back --- 10'Back ◆Flash Mode / Slow Mode / Step Mode Tap the number key matches the one from N steps earlier in the sequence. In 1'Back 1 task1: count & memorize 2 task2: count & memorize 3 __keyboard__: answer for task1 4 task3: count & memorize 5 __keyboard__: answer for task2 6 task4: count & memorize : In 2'Back 1 task1: count & memorize 2 task2: count & memorize 3 task3: count & memorize 4 __keyboard__: answer for task1 5 task4: count & memorize 6 __keyboard__: answer for task2 7 task5: count & memorize :
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?
Screenshots
Verdict
The clearest difference is in-app purchases: N'Back 10 at none against Number Memory 25's 1. Number Memory 25's advantage is update cadence (every 3 weeks vs every 12 months) and price ($0.99 vs $2.99). On rating, ads, monetization model 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
N'Back 10 costs $2.99 and Number Memory 25 $0.99 up front. Number Memory 25 sells 1 one-off in-app purchase. N'Back 10 asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for N'Back 10 against 5.0 for Number Memory 25. That said, the two scores are not equally well evidenced: Number Memory 25 has 5 ratings behind it against 1, so its average is the more settled of the two.
N'Back 10 ships an update every 12 months, Number Memory 25 every 3 weeks. The most recent releases landed on September 11, 2026 and September 2, 2026 respectively.
| Parameter | N'Back 10 | Number Memory 25 |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 5.0 (1 ratings) | 5.0 (5 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 12 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | T&T United Inc. |
Customer experience
N'Back 10
Number Memory 25
In-app purchases
N'Back 10
No in-app purchases
Number Memory 25
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