# Mental Math Sprint vs ガチ2桁九九

The clearest difference is update cadence: ガチ2桁九九 at every 2 months against Mental Math Sprint's every 4 months. ガチ2桁九九 also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mental Math Sprint sells 3 in-app purchases, starting at $1.99 per 7 days and ガチ2桁九九 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mental Math Sprint ships an update every 4 months, ガチ2桁九九 every 2 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Mental Math Sprint | ガチ2桁九九 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 4 MB | 24 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) | [kotobaz](https://appshunter.io/developer/1634727152) |

## What reviewers say

### Mental Math Sprint

[App page](https://appshunter.io/ios/app/mental-math-sprint-brain-game/id6772115219)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Times Table Weekly | $1.99 | per 7 days |
| Calculation Quiz Yearly | $9.99 | per year |
| Division Trainer Lifetime | $19.99 | one-time |


### ガチ2桁九九

[App page](https://appshunter.io/ios/app/2/id6777702804)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム解放 | $2.99 | one-time |


## Frequently asked questions

### Is Mental Math Sprint free?

Mental Math Sprint is free to download, with in-app purchases available.

### Is ガチ2桁九九 free?

ガチ2桁九九 is free to download, with in-app purchases available.

### Do Mental Math Sprint or ガチ2桁九九 have ads?

Neither Mental Math Sprint nor ガチ2桁九九 shows ads.

### Which is updated more often, Mental Math Sprint or ガチ2桁九九?

Mental Math Sprint ships an update every 4 months, and ガチ2桁九九 every 2 months. Most recently, Mental Math Sprint was updated on October 31, 2026 and ガチ2桁九九 on October 31, 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.*