# +/ vs REXER：Diagonal Strategy

The clearest difference is in-app purchases: REXER：Diagonal Strategy at none against +/'s 7. REXER：Diagonal Strategy also leads on update cadence (daily vs every 16 months). +/'s advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. +/ sells 7 one-off in-app purchases. REXER：Diagonal Strategy asks for nothing beyond the download.

+/ ships an update every 16 months, REXER：Diagonal Strategy daily. Both last shipped on October 16, 2026.

## The numbers

| Metric | +/ | REXER：Diagonal Strategy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/plus-0-number-puzzle/id1139669462/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 16 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 118 MB | 152 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greentail, Inc.](https://appshunter.io/developer/1111479312) | [Koji Murakami](https://appshunter.io/developer/962205061) |

## What reviewers say

### +/

[App page](https://appshunter.io/ios/app/plus-0-number-puzzle/id1139669462)

A unique brain training puzzle game where you connect number tiles. Tiles of the same color add, while different colors subtract. Master spells and create life-forms using the power of zero to enhance your gameplay.

**Highlights:** Connect same number tiles, Add same color tiles, Subtract different color tiles, Master unique spells, Create life-forms with zero, Brain training puzzle

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flask of Essences | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Cashman | $1.99 | one-time |
| Bottle of Essences | $3.99 | one-time |
| Bucket of Essences | $9.99 | one-time |
| Tank of Essences | $39.99 | one-time |
| Bath of Essences | $79.99 | one-time |


### REXER：Diagonal Strategy

[App page](https://appshunter.io/ios/app/rexerdiagonal-strategy/id6764506010)

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

**In-app purchases:** none


## Frequently asked questions

### Is +/ free?

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

### Is REXER：Diagonal Strategy free?

REXER：Diagonal Strategy is free to download, with no in-app purchases.

### Do +/ or REXER：Diagonal Strategy have ads?

Both +/ and REXER：Diagonal Strategy show ads.

### Which is updated more often, +/ or REXER：Diagonal Strategy?

+/ ships an update every 16 months, and REXER：Diagonal Strategy daily. Most recently, +/ was updated on October 16, 2026 and REXER：Diagonal Strategy on October 16, 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.*