# duk. vs Water Loop Puzzle

The clearest difference is in-app purchases: duk. at none against Water Loop Puzzle's 4. duk. also leads on ads (none vs shown). Water Loop Puzzle's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Water Loop Puzzle sells 4 one-off in-app purchases. duk. asks for nothing beyond the download.

duk. ships an update every 11 days, Water Loop Puzzle every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | duk. | Water Loop Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/duk/id6778465982/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 8 MB | 56 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Betula Noir LLC](https://appshunter.io/developer/6778465985) | [Anastassiya Shugaley](https://appshunter.io/developer/1895809893) |

## What reviewers say

### duk.

[App page](https://appshunter.io/ios/app/duk/id6778465982)

A charming puzzle game where you guide a character across lily pads by stepping a specific number of spaces. Solve 80 unique ponds in classic mode or tackle a new daily challenge. Enjoy a relaxing, ad-free experience with no internet or accounts required.

**Highlights:** Numbered lily pad stepping mechanic, 80 classic ponds, Daily puzzles (easy, medium, hard), Streak tracking for daily play, No ads or accounts, Offline play

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

**In-app purchases:** none


### Water Loop Puzzle

[App page](https://appshunter.io/ios/app/water-loop-puzzle-zen-loop/id6795905714)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Coins | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 5,500 Coins | $3.99 | one-time |
| 12,000 Coins | $7.99 | one-time |


## Frequently asked questions

### Is duk. free?

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

### Is Water Loop Puzzle free?

Water Loop Puzzle is free to download, with in-app purchases available.

### Do duk. or Water Loop Puzzle have ads?

Water Loop Puzzle shows ads; duk. does not.

### Which is updated more often, duk. or Water Loop Puzzle?

duk. ships an update every 11 days, and Water Loop Puzzle every 3 weeks. Most recently, duk. was updated on October 31, 2026 and Water Loop Puzzle 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.*