# SOINSU math puzzle vs Ring in Ring

The clearest difference is review sentiment: SOINSU math puzzle at 90% against Ring in Ring's 71%. SOINSU math puzzle also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SOINSU math puzzle sells 2 one-off in-app purchases and Ring in Ring sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. Both last shipped on September 9, 2026.

## The numbers

| Metric | SOINSU math puzzle | Ring in Ring |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **90.0% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 105 MB | 121 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GAIBAKO co., Ltd.](https://appshunter.io/developer/1548482925) | [Strawberry Gohan](https://appshunter.io/developer/425100193) |

## What reviewers say

### SOINSU math puzzle

[App page](https://appshunter.io/ios/app/soinsu-math-puzzle/id6444055103)

Engage in a brain-training puzzle game focused on prime factorization. Anyone can learn the fun of numbers through this simple, time-killing activity. Enjoy the challenge of dividing numbers into prime factors with a high-tempo soundtrack.

**Highlights:** Prime factorization gameplay, Brain training puzzles, Mental arithmetic practice, Cyber visuals, Trance music soundtrack, Multiple game modes, Prime number collection

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add no time limit mode | $0.99 | one-time |
| Hidden Ads | $2.99 | one-time |


### Ring in Ring

[App page](https://appshunter.io/ios/app/ring-in-ring/id6751136324)

Trace and connect rings of different sizes to create larger ones. Complete patterned rings to unlock new connections. Enjoy a relaxing experience with no time limits and global leaderboards.

**Highlights:** Trace and connect rings, Create patterned rings, No time limit gameplay, Tranquil BGM and sound effects, Global score rankings, Satisfying ring generation

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus  long chain  buttons | $1.99 | one-time |
| Remove Ads (Permanently) | $2.99 | one-time |


## Frequently asked questions

### Is SOINSU math puzzle free?

SOINSU math puzzle is free to download, with in-app purchases available.

### Is Ring in Ring free?

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

### Do SOINSU math puzzle or Ring in Ring have ads?

Both SOINSU math puzzle and Ring in Ring show ads.

### Which is updated more often, SOINSU math puzzle or Ring in Ring?

SOINSU math puzzle ships an update weekly, and Ring in Ring weekly. Most recently, SOINSU math puzzle was updated on September 9, 2026 and Ring in Ring on September 9, 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.*