# Merge Num vs Mellow Isle

The clearest difference is update cadence: Merge Num at daily against Mellow Isle's every 8 days. Merge Num also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Merge Num sells 1 one-off in-app purchase and Mellow Isle sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Merge Num ships an update daily, Mellow Isle every 8 days. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Merge Num | Mellow Isle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mellow-isle-nonogram-puzzle/id6797111939/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 8 days |
| Monetization | — | Free with in-app purchases |
| Size | 95 MB | 15 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kyung Hyun Park](https://appshunter.io/developer/1303604119) | [ChanGyu Kang](https://appshunter.io/developer/1869205578) |

## What reviewers say

### Merge Num

[App page](https://appshunter.io/ios/app/merge-num/id6737688928)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


### Mellow Isle

[App page](https://appshunter.io/ios/app/mellow-isle-nonogram-puzzle/id6797111939)

Engage in a calming pixel art puzzle experience. Solve logic challenges to reveal charming images and gradually build a serene island landscape. Enjoy a relaxing gameplay loop with progress tracking and helpful hints.

**Highlights:** 125 nonogram puzzles, Pixel art reveals, Island building progression, Puzzle of the Day, Logic hints and guidance, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mellow Isle Pro | $1.99 | one-time |


## Frequently asked questions

### Is Merge Num free?

Merge Num is free to download, with in-app purchases available.

### Is Mellow Isle free?

Mellow Isle is free to download, with in-app purchases available.

### Do Merge Num or Mellow Isle have ads?

Both Merge Num and Mellow Isle show ads.

### Which is updated more often, Merge Num or Mellow Isle?

Merge Num ships an update daily, and Mellow Isle every 8 days. Most recently, Merge Num was updated on November 4, 2026 and Mellow Isle on November 10, 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.*