# Seadoku vs Collect2Merge

The clearest difference is review sentiment: Seadoku at 100% against Collect2Merge's 0%. Seadoku also leads on rating (5.0 vs 2.0) and ratings volume (5 vs 1). Collect2Merge's advantage is iOS requirement (11.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Seadoku holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: Seadoku has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Seadoku's written reviews are positive against 0% of Collect2Merge's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Seadoku | Collect2Merge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/seadoku/id1590857274/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/collect2merge/id6475280954/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Ad-supported | Ad-supported |
| Size | 62 MB | 93 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHRISTINA STOUT](https://appshunter.io/developer/1531227744) | [TINKERBOX YAZILIM SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1530011147) |

## What reviewers say

### Seadoku

[App page](https://appshunter.io/ios/app/seadoku/id1590857274)

This game offers a unique twist on Sudoku, replacing numbers with charming sea creatures. Enjoy a relaxing underwater world with strategic puzzles and multiple difficulty levels. It's perfect for honing your puzzle-solving skills.

**Highlights:** Sea creature themed puzzles, Multiple difficulty levels, Relaxing ocean soundscapes, Strategic gameplay, Hone puzzle-solving skills

**Features:** macOS Compatibility

**In-app purchases:** none


### Collect2Merge

[App page](https://appshunter.io/ios/app/collect2merge/id6475280954)

A strategic puzzle game where players match and merge colorful coins to reach specific value goals. Advance through increasingly complex levels with vibrant graphics and intuitive gameplay. Designed for both casual players and puzzle enthusiasts.

**Highlights:** Strategic coin matching, Merge and upgrade coins, Goal-oriented levels, Progressive difficulty, Vibrant visuals, Intuitive gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Seadoku free?

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

### Is Collect2Merge free?

Collect2Merge is free to download, with no in-app purchases.

### Which has better reviews, Seadoku or Collect2Merge?

Seadoku is rated higher. Seadoku averages 5.0 out of 5 from 5 ratings, while Collect2Merge averages 2.0 from 1 ratings.

### Do Seadoku or Collect2Merge have ads?

Both Seadoku and Collect2Merge show ads.

### Which is updated more often, Seadoku or Collect2Merge?

Seadoku ships an update fortnightly, and Collect2Merge fortnightly. Most recently, Seadoku was updated on October 13, 2026 and Collect2Merge on October 8, 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.*