# one digit addition vs 数学好きのラクガキパズル

The clearest difference is in-app purchases: one digit addition at none against 数学好きのラクガキパズル's 4. one digit addition also leads on iOS requirement (8.0 vs 15.1). 数学好きのラクガキパズル's advantage is update cadence (fortnightly vs every 13 months). On price, ads and device support there is nothing between them.

Both are free to download. 数学好きのラクガキパズル sells 4 one-off in-app purchases. one digit addition asks for nothing beyond the download.

one digit addition ships an update every 13 months, 数学好きのラクガキパズル fortnightly. Both last shipped on October 6, 2026.

## The numbers

| Metric | one digit addition | 数学好きのラクガキパズル |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/one-digit-addition/id424279638/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 4 MB | 637 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Currach Software](https://appshunter.io/developer/315759561) | [kouhei kobayashi](https://appshunter.io/developer/1635774023) |

## What reviewers say

### one digit addition

[App page](https://appshunter.io/ios/app/one-digit-addition/id424279638)

Practice single-digit addition with this game. It features nine stages with random questions, offering a speed puzzle and search game experience. This is a lite version of a more comprehensive math app.

**Highlights:** Single-digit addition practice, Speed puzzle game, Search game mode, Nine stages with random questions, Lite version of a full math app

**Features:** macOS Compatibility

**In-app purchases:** none


### 数学好きのラクガキパズル

[App page](https://appshunter.io/ios/app/id6468378892)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 二年生の追加ステージ | $0.99 | one-time |
| 3年生の追加ステージ | $0.99 | one-time |
| 1年生の追加ステージ | $0.99 | one-time |
| 1〜3年生の追加ステージ | $1.99 | one-time |


## Frequently asked questions

### Is one digit addition free?

one digit addition is free to download, with no in-app purchases.

### Is 数学好きのラクガキパズル free?

数学好きのラクガキパズル is free to download, with in-app purchases available.

### Do one digit addition or 数学好きのラクガキパズル have ads?

Neither one digit addition nor 数学好きのラクガキパズル shows ads.

### Which is updated more often, one digit addition or 数学好きのラクガキパズル?

one digit addition ships an update every 13 months, and 数学好きのラクガキパズル fortnightly. Most recently, one digit addition was updated on October 6, 2026 and 数学好きのラクガキパズル on October 6, 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.*