# Rinmath Math Number Puzzle vs PetBox

The clearest difference is in-app purchases: PetBox at none against Rinmath Math Number Puzzle's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Rinmath Math Number Puzzle sells 2 one-off in-app purchases. PetBox asks for nothing beyond the download.

Rinmath Math Number Puzzle ships an update every 4 days, PetBox every 5 days. The most recent releases landed on October 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Rinmath Math Number Puzzle | PetBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rinmath-math-number-puzzle/id6767552348/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 24 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Rizk Corsight, LLC](https://appshunter.io/developer/1896065289) | [Beijing XingheBit Science & Technology Development Co., Ltd.](https://appshunter.io/developer/1882505330) |

## What reviewers say

### Rinmath Math Number Puzzle

[App page](https://appshunter.io/ios/app/rinmath-math-number-puzzle/id6767552348)

Engage in a daily arithmetic logic puzzle with rotating concentric rings. Solve for the target sum on each spoke to complete the daily challenge. Offers multiple difficulty tiers and practice modes, with a privacy-first approach and no tracking.

**Highlights:** Daily arithmetic logic puzzles, Rotating concentric rings, Multiple spoke count options, Offline play, Practice and multiplication modes, Lifetime stats and history calendar, On-device solve coach

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | Free | one-time |
| Rinmath Pro | $1.99 | one-time |


### PetBox

[App page](https://appshunter.io/ios/app/petbox/id6790362436)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rinmath Math Number Puzzle free?

Rinmath Math Number Puzzle is free to download, with in-app purchases available.

### Is PetBox free?

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

### Do Rinmath Math Number Puzzle or PetBox have ads?

Neither Rinmath Math Number Puzzle nor PetBox shows ads.

### Which is updated more often, Rinmath Math Number Puzzle or PetBox?

Rinmath Math Number Puzzle ships an update every 4 days, and PetBox every 5 days. Most recently, Rinmath Math Number Puzzle was updated on October 7, 2026 and PetBox on September 25, 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.*