---
title: "Serial 7s - Reviews, Revenue and Downloads in Australia | Apple App Store"
description: "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-Men"
---

# Serial 7s — Australia
> Serial Sevens Subtraction.

![Serial 7s App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/35/9f/a1/359fa142-a788-172e-b42f-3d6d17f8c41f/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [HFX Lab](https://apptail.io/developer/hfx-lab-yBl)
**Category:** Games
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** com.hyodi.serialx
**Store:** Apple App Store
**Country:** Australia
**Version:** 1.1.0 (released 2026-09-21)
**Original Release:** 2024-04-01
**Languages:** English, Korean

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/au/app/app/id6480178276)
**AppTail Page:** [https://apptail.io/app/serial-7s-tPhq/australia](https://apptail.io/app/serial-7s-tPhq/australia)

## Serial 7s Description
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.

## Serial 7s Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3c/56/08/3c56080c-d6f4-9afe-0abb-5befd8af12e7/01_home_1.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/7f/31/f1/7f31f181-bff8-ea74-3d05-65fb33b228a3/03_play_normal_1.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fb/6f/14/fb6f149f-81f9-835a-da3e-43bbf2052e00/02_play_hard_1.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a4/ff/8a/a4ff8a70-a3ab-4d79-f60a-b51ea8fb85be/04_play_complete_1.png/1242x2688.png)

## Serial 7s Rating Breakdown in Australia
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)






## Serial 7s Available In
- [Australia](https://apptail.io/app/serial-7s-tPhq/australia)
- [South Korea](https://apptail.io/app/serial-7s-tPhq/south-korea)
- [Brunei](https://apptail.io/app/serial-7s-tPhq/brunei)
- [Canada](https://apptail.io/app/serial-7s-tPhq/canada)
- [Denmark](https://apptail.io/app/serial-7s-tPhq/denmark)
- [Dominican Republic](https://apptail.io/app/serial-7s-tPhq/dominican-republic)
- [Finland](https://apptail.io/app/serial-7s-tPhq/finland)
- [Nigeria](https://apptail.io/app/serial-7s-tPhq/nigeria)
- [Romania](https://apptail.io/app/serial-7s-tPhq/romania)
- [Saudi Arabia](https://apptail.io/app/serial-7s-tPhq/saudi-arabia)
- [Austria](https://apptail.io/app/serial-7s-tPhq/austria)
- [Türkiye](https://apptail.io/app/serial-7s-tPhq/turkey)
- [Azerbaijan](https://apptail.io/app/serial-7s-tPhq/azerbaijan)

---

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