# 補数チャレンジ！ vs Cyber Soroban

The clearest difference is price: 補数チャレンジ！ at Free against Cyber Soroban's $0.49. On in-app purchases and iOS requirement there is nothing between them.

補数チャレンジ！ is free to download; Cyber Soroban costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 補数チャレンジ！ | Cyber Soroban |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cyber-soroban/id6767681268/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 2 months |
| Monetization | — | Paid |
| Size | 2 MB | 2 MB |
| Requires iOS | 17.2 | **16.0** |
| Devices | — | **iPhone** |
| Age rating | 4+ | +4 |
| Developer | [Kazuhiko Maruyama](https://appshunter.io/developer/1731223811) | [satoshi amasaki](https://appshunter.io/developer/1891268722) |

## What reviewers say

### 補数チャレンジ！

[App page](https://appshunter.io/ios/app/id6478446057)

**In-app purchases:** none


### Cyber Soroban

[App page](https://appshunter.io/ios/app/cyber-soroban/id6767681268)

Experience a futuristic abacus with a cyberpunk aesthetic. Flick luminous beads on a neon display for calculation. Enjoy immersive sound effects and a unique visual style inspired by TRON.

**Highlights:** Cyberpunk UI with neon glow, Luminous gem-like beads, Electronic click and glass chime sounds, Full 13-column abacus calculation, Landscape-only immersive experience

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

**In-app purchases:** none


## Frequently asked questions

### Is 補数チャレンジ！ free?

補数チャレンジ！ is free to download, with no in-app purchases.

### Is Cyber Soroban free?

Cyber Soroban costs $0.49, with no in-app purchases.

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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.*