# Brain Training, Know brain age vs Katachi

The clearest difference is update cadence: Katachi at monthly against Brain Training, Know brain age's every 3 months. Brain Training, Know brain age's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Brain Training, Know brain age sells 1 one-off in-app purchase and Katachi sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Brain Training, Know brain age ships an update every 3 months, Katachi monthly. The most recent releases landed on September 27, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Brain Training, Know brain age | Katachi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (234 ratings)](https://appshunter.io/ios/app/brain-training-know-brain-age/id633246396/reviews)** | — |
| Number of ratings | **234** | — |
| Positive reviews | 82.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 6 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [atsuko imai](https://appshunter.io/developer/1830783417) |

## What reviewers say

### Brain Training, Know brain age

[App page](https://appshunter.io/ios/app/brain-training-know-brain-age/id633246396)

Test your cognitive abilities with quick, engaging games to determine your brain age. Improve observation, memory, judgment, and reaction skills through daily challenges and puzzles.

**Highlights:** Brain age assessment, Quick 30-second games, Observation challenges, Memory tests, Judgment and intuition games, Daily puzzle games, General cognitive test

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Training - Premium Edition (without ads) | $1.99 | one-time |

**What reviewers like**

- 👍 Helps train brain
- 👍 Enjoyable daily brain games
- 👍 Good game, perfect time filler
- 👍 Keeps brain alert and shows when not well
- 👍 Fantastic game, highly recommended

**What reviewers complain about**

- 🐛 Unclear instructions for some games
- 🐛 Issues with calculation section (incorrect crosses)
- 🐛 Individual game scores not updated regularly

**Reported bugs**

- Help section not working
- Incompatibility with older devices

**Requested features**

- More game variety
- Option to save progress and sync across devices
- Detailed breakdown of scores and performance


### Katachi

[App page](https://appshunter.io/ios/app/katachi-shape-reflex-puzzle/id6760748598)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Brain Training, Know brain age free?

Brain Training, Know brain age is free to download, with in-app purchases available.

### Is Katachi free?

Katachi is free to download, with in-app purchases available.

### Do Brain Training, Know brain age or Katachi have ads?

Both Brain Training, Know brain age and Katachi show ads.

### Which is updated more often, Brain Training, Know brain age or Katachi?

Brain Training, Know brain age ships an update every 3 months, and Katachi monthly. Most recently, Brain Training, Know brain age was updated on September 27, 2026 and Katachi on September 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*