Serial 7
Educational In-app purchases Contains ads
Serial sevens - Descending subtraction test.
- Downloads
- 205+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 19
- 2026 · v1.1.0
Screenshots
About Serial 7
Serial 7 is a game that tests how quickly you can subtract 7 in a row from a given number.
It is a slight variation of the serial 7 subtraction test, which is one of the items on the MMSE(Mini-Mental State Examination).
A starting number between 94 and 100 is randomly selected, and you measure the time it takes until you can't subtract any more 7.
The subtraction of consecutive sevens task is used to test attention and memory, and consistent testing can help improve brain skills such as attention and memory.
It can also help prevent cognitive decline that occurs with everyday activities and reduce the likelihood of developing dementia.
They can also be used to see how an individual's cognition changes over time.
Recommended for users interested in brain health and training, and dementia prevention.
It is a slight variation of the serial 7 subtraction test, which is one of the items on the MMSE(Mini-Mental State Examination).
A starting number between 94 and 100 is randomly selected, and you measure the time it takes until you can't subtract any more 7.
The subtraction of consecutive sevens task is used to test attention and memory, and consistent testing can help improve brain skills such as attention and memory.
It can also help prevent cognitive decline that occurs with everyday activities and reduce the likelihood of developing dementia.
They can also be used to see how an individual's cognition changes over time.
Recommended for users interested in brain health and training, and dementia prevention.
What’s new
Version 1.1.0 · Updated September 19, 2026
Game modes updated to 2 options. Added 'Remove Ads' in-app purchase.
Alternatives to Serial 7
Looking for apps like Serial 7? Here are 6 similar Android apps on Google Play. The highest rated is 한글 띄어쓰기 맞춤법 퀴즈 - 우리말 겨루기 (4.5/5), and all 6 are free to download.
-
CardLine Puzzle - Solitaire
-
Here Memo - 9 Input Positions
-
한글 십자말풀이 - 우리말 겨루기 4.2
-
한글 띄어쓰기 맞춤법 퀴즈 - 우리말 겨루기 4.5
-
Stock Honey Calculator 4.5
-
Surveying Leveling Field Notes
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Serial 7 | – | Free | 100+ | Sep 19, 2026 | |
| CardLine Puzzle - Solitaire | – | Free | 1+ | Feb 21, 2024 | Compare |
| Here Memo - 9 Input Positions | – | Free | 0+ | Jul 11, 2023 | Compare |
| 한글 십자말풀이 - 우리말 겨루기 | 4.2 / 5 | Free | 5,000+ | May 19, 2026 | Compare |
| 한글 띄어쓰기 맞춤법 퀴즈 - 우리말 겨루기 | 4.5 / 5 | Free | 10,000+ | Sep 15, 2026 | Compare |
| Stock Honey Calculator | 4.5 / 5 | Free | 1,000+ | Oct 4, 2025 | Compare |
| Surveying Leveling Field Notes | – | Free | 5,000+ | Aug 8, 2026 | Compare |
Compare Serial 7 with the top alternatives: ratings, updates, ASO score and keyword gaps →