Find Number! vs Serial 7s
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Find Number!
Tap and locate the target number within a grid before the timer expires. As you progress, the puzzles become more complex with additional digits, colors, and shapes. Challenge your mind and strive for the highest Brain Score.
- Tap and find target numbers
- Time-based challenges
- Increasing difficulty with digits, colors, shapes
- Brain Score system
- Addictive gameplay
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Sharpen your focus with Find Number! Tap and find the target number hidden in the grid before time runs out. As levels rise, numbers get trickier with more digits, colors, and shapes. Challenge your brain, break your limits, and aim for the highest Brain Score!
Serial 7s
This game challenges you to rapidly subtract 7 from a starting number until you can no longer continue. It's based on a cognitive test used to assess attention and memory, with consistent play potentially improving brain skills and helping to prevent cognitive decline.
- Serial 7 subtraction gameplay
- Tests attention and memory
- Helps prevent cognitive decline
- Measures subtraction speed
- Randomized starting numbers
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Serial 7s is a brain training game that tests how fast you can perform continuous subtraction of 7 from a starting number. Inspired by the classic "Serial 7s" task—a standard component of the Mini-Mental State Examination (MMSE)—this game gives a proven cognitive test a fresh twist. Starting with a randomly generated number between 99 and 105, your total time to complete 14 consecutive subtractions of 7 is measured. Serial subtraction by 7 is widely used to evaluate focus, attention span, and working memory. Regular practice can help sharpen your mind and boost cognitive fitness. Recommended for anyone interested in brain training, keeping their mind active, or supporting long-term cognitive health and dementia prevention.
Screenshots
Verdict
The clearest difference is update cadence: Serial 7s at every 5 months against Find Number!'s every 20 months. On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Find Number! ships an update every 20 months, Serial 7s every 5 months. Both last shipped on October 12, 2026.
| Parameter | Find Number! | Serial 7s |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 20 months | Every 5 months — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 180 MB | 42 MB |
| Age rating | 4+ | 9+ |
| Developer | MoreThanThat | HFX Lab |
Customer experience
Find Number!
Serial 7s
In-app purchases
Find Number!
No in-app purchases
Serial 7s
No in-app purchases
