# Sudogu vs Sky Rivon

The clearest difference is in-app purchases: Sudogu at none against Sky Rivon's 1. Sudogu also leads on ads (none vs shown). Sky Rivon's advantage is iOS requirement (14.0 vs 16.0). On price, review sentiment, update cadence and device support there is nothing between them.

Both are free to download. Sky Rivon sells 1 one-off in-app purchase. Sudogu asks for nothing beyond the download.

Sudogu ships an update fortnightly, Sky Rivon monthly. The most recent releases landed on October 9, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Sudogu | Sky Rivon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sudogu/id6739965254/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 252 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Neil Rohan](https://appshunter.io/developer/1522614743) | [Concetto Antonino Privitera](https://appshunter.io/developer/1791634556) |

## What reviewers say

### Sudogu

[App page](https://appshunter.io/ios/app/sudogu/id6739965254)

This app offers a unique take on Sudoku with user-loaded solution algorithms and instant feedback on incorrect guesses. Enjoy multiple difficulty levels, no time limits, and save your progress anytime. It provides a relaxed, ad-free gaming experience for all ages.

**Highlights:** User loaded solution algorithms, Immediate feedback on wrong guesses, Four difficulty levels, No time limits, Save progress anytime, Detailed game records, Ad-free experience

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

**In-app purchases:** none


### Sky Rivon

[App page](https://appshunter.io/ios/app/sky-rivon/id6740828708)

Embark on a thrilling river adventure through a magical sky. Tap to create and widen your path, navigating unpredictable obstacles and collecting rewards. Enjoy a visually stunning, one-finger control experience with exciting challenges.

**Highlights:** Fantasy-like sky river adventure, One-finger tap controls, Dynamic path creation and widening, Navigate obstacles and dangers, Collect coins for rewards, Unlock new boat skins

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove non-rewarded ads | $3.99 | one-time |


## Frequently asked questions

### Is Sudogu free?

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

### Is Sky Rivon free?

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

### Do Sudogu or Sky Rivon have ads?

Sky Rivon shows ads; Sudogu does not.

### Which is updated more often, Sudogu or Sky Rivon?

Sudogu ships an update fortnightly, and Sky Rivon monthly. Most recently, Sudogu was updated on October 9, 2026 and Sky Rivon on September 28, 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.*