# Kushi vs Viper maze

The clearest difference is price: Kushi at Free against Viper maze's $1.99. Kushi also leads on in-app purchases (none vs 1). Viper maze's advantage is update cadence (every 3 months vs every 9 months) and iOS requirement (13.0 vs 26.0). On ads and device support there is nothing between them.

Kushi is free to download; Viper maze costs $1.99 up front. Viper maze sells 1 one-off in-app purchase. Kushi asks for nothing beyond the download.

Kushi ships an update every 9 months, Viper maze every 3 months. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Kushi | Viper maze |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 1 MB | 6 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kiyoshi Izumi](https://appshunter.io/developer/1807085294) | [Martin Gruner](https://appshunter.io/developer/1824447154) |

## What reviewers say

### Kushi

[App page](https://appshunter.io/ios/app/kushi-dango/id6744908462)

**Features:** Apple Watch app

**In-app purchases:** none


### Viper maze

[App page](https://appshunter.io/ios/app/viper-maze/id6748138935)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full game | $3.99 | one-time |


## Frequently asked questions

### Is Kushi free?

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

### Is Viper maze free?

Viper maze costs $1.99, and also offers in-app purchases.

### Do Kushi or Viper maze have ads?

Neither Kushi nor Viper maze shows ads.

### Which is updated more often, Kushi or Viper maze?

Kushi ships an update every 9 months, and Viper maze every 3 months. Most recently, Kushi was updated on October 3, 2026 and Viper maze on October 15, 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.*