# Smart Sudoku Zen vs Flipmoji

The clearest difference is price: Flipmoji at Free against Smart Sudoku Zen's $1.99. Flipmoji also leads on update cadence (daily vs every 3 months) and iOS requirement (16.7 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Flipmoji is free to download; Smart Sudoku Zen costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Smart Sudoku Zen ships an update every 3 months, Flipmoji daily. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Smart Sudoku Zen | Flipmoji |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Size | 27 MB | 18 MB |
| Requires iOS | 18.6 | **16.7** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Smart-Byte GmbH](https://appshunter.io/developer/1473446693) | [Morning Mark LLC](https://appshunter.io/developer/1860336517) |

## What reviewers say

### Smart Sudoku Zen

[App page](https://appshunter.io/ios/app/smart-sudoku-zen/id6754931490)

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

**In-app purchases:** none


### Flipmoji

[App page](https://appshunter.io/ios/app/flipmoji-memory-card-game/id6758564667)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Sudoku Zen free?

Smart Sudoku Zen costs $1.99, with no in-app purchases.

### Is Flipmoji free?

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

### Do Smart Sudoku Zen or Flipmoji have ads?

Neither Smart Sudoku Zen nor Flipmoji shows ads.

### Which is updated more often, Smart Sudoku Zen or Flipmoji?

Smart Sudoku Zen ships an update every 3 months, and Flipmoji daily. Most recently, Smart Sudoku Zen was updated on November 11, 2026 and Flipmoji on October 31, 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.*