# Reverse one digit multiplication tADa vs SOINSU math puzzle

The clearest difference is in-app purchases: Reverse one digit multiplication tADa at none against SOINSU math puzzle's 2. Reverse one digit multiplication tADa also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). SOINSU math puzzle's advantage is update cadence (weekly vs every 9 months). On price and device support there is nothing between them.

Both are free to download. SOINSU math puzzle sells 2 one-off in-app purchases. Reverse one digit multiplication tADa asks for nothing beyond the download.

Reverse one digit multiplication tADa ships an update every 9 months, SOINSU math puzzle weekly. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Reverse one digit multiplication tADa | SOINSU math puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 105 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Currach Software](https://appshunter.io/developer/315759561) | [GAIBAKO co., Ltd.](https://appshunter.io/developer/1548482925) |

## What reviewers say

### Reverse one digit multiplication tADa

[App page](https://appshunter.io/ios/app/reverse-one-digit-multiplication-tada/id483001832)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Reverse one digit multiplication tADa free?

Reverse one digit multiplication tADa is free to download, with no in-app purchases.

### Is SOINSU math puzzle free?

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

### Do Reverse one digit multiplication tADa or SOINSU math puzzle have ads?

SOINSU math puzzle shows ads; Reverse one digit multiplication tADa does not.

### Which is updated more often, Reverse one digit multiplication tADa or SOINSU math puzzle?

Reverse one digit multiplication tADa ships an update every 9 months, and SOINSU math puzzle weekly. Most recently, Reverse one digit multiplication tADa was updated on October 7, 2026 and SOINSU math puzzle on October 21, 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.*