# SumXMinus vs 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル

The clearest difference is ads: 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル at none against SumXMinus's shown. 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル also leads on update cadence (every 10 days vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SumXMinus ships an update every 6 weeks, 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル every 10 days. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SumXMinus | 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Size | 32 MB | 10 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Katsuhiko Yao](https://appshunter.io/developer/1543188534) | [RAINBOW TREE LLC](https://appshunter.io/developer/1619997282) |

## What reviewers say

### SumXMinus

[App page](https://appshunter.io/ios/app/sumxminus-negative-math/id6480327347)

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

**In-app purchases:** none


### 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル

[App page](https://appshunter.io/ios/app/123/id6801984949)

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

**In-app purchases:** none


## Frequently asked questions

### Is SumXMinus free?

SumXMinus is free to download, with no in-app purchases.

### Is 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル free?

中学数学 中1中2中3の苦手をさかのぼって解き直すドリル is free to download, with no in-app purchases.

### Do SumXMinus or 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル have ads?

SumXMinus shows ads; 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル does not.

### Which is updated more often, SumXMinus or 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル?

SumXMinus ships an update every 6 weeks, and 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル every 10 days. Most recently, SumXMinus was updated on October 9, 2026 and 中学数学 中1中2中3の苦手をさかのぼって解き直すドリル on October 17, 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.*