# 1 vs 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル

The clearest difference is ads: 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル at none against 1's shown. 1's advantage is update cadence (every 2 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 1 sells 1 one-off in-app purchase and 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

1 ships an update every 2 days, 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル every 2 weeks. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 1 | 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 94 MB | 69 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KOTOAPP](https://appshunter.io/developer/1842389344) | [Fantamstick](https://appshunter.io/developer/563146308) |

## What reviewers say

### 1

[App page](https://appshunter.io/ios/app/1-digit-math/id6759549229)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan (Remove Ads) | $0.99 | one-time |


### 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル

[App page](https://appshunter.io/ios/app/id6774120076)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Annual | $24.99 | per year |


## Frequently asked questions

### Is 1 free?

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

### Is 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル free?

脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル is free to download, with in-app purchases available.

### Do 1 or 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル have ads?

1 shows ads; 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル does not.

### Which is updated more often, 1 or 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル?

1 ships an update every 2 days, and 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル every 2 weeks. Most recently, 1 was updated on October 16, 2026 and 脳トレ計算ゲーム たしひきパズる｜暗算・九九・算数パズル on October 24, 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.*