# Sorting Cafe vs Ninekeep

The clearest difference is update cadence: Ninekeep at monthly against Sorting Cafe's every 4 months. Sorting Cafe's advantage is iOS requirement (15 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sorting Cafe ships an update every 4 months, Ninekeep monthly. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Sorting Cafe | Ninekeep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ninekeep-sudoku/id6787771732/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 171 MB | 13 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gamewise Private Limited](https://appshunter.io/developer/1836109938) | [Velcairn Studios LLC](https://appshunter.io/developer/6787771734) |

## What reviewers say

### Sorting Cafe

[App page](https://appshunter.io/ios/app/sorting-cafe/id6758656690)

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

**In-app purchases:** none


### Ninekeep

[App page](https://appshunter.io/ios/app/ninekeep-sudoku/id6787771732)

This Sudoku game focuses on teaching you advanced solving techniques. It offers classic and Sums modes with customizable difficulty. Earn in-game currency to unlock new themes without any forced ads.

**Highlights:** Teaches Sudoku solving techniques, Classic and Sums (Killer Sudoku) modes, Customizable difficulty levels, Unlimited puzzle generation, Daily Ledger for tracking progress, Unlockable themes via in-game currency

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

**In-app purchases:** none


## Frequently asked questions

### Is Sorting Cafe free?

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

### Is Ninekeep free?

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

### Do Sorting Cafe or Ninekeep have ads?

Both Sorting Cafe and Ninekeep show ads.

### Which is updated more often, Sorting Cafe or Ninekeep?

Sorting Cafe ships an update every 4 months, and Ninekeep monthly. Most recently, Sorting Cafe was updated on October 6, 2026 and Ninekeep on September 29, 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.*