# duk. vs BirdBrainz

The clearest difference is update cadence: duk. at every 11 days against BirdBrainz's monthly. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for duk. against 5.0 for BirdBrainz. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

duk. ships an update every 11 days, BirdBrainz monthly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | duk. | BirdBrainz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/duk/id6778465982/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/birdbrainz-logic-puzzle/id6800088146/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Monthly |
| Monetization | Free | Free |
| Size | 8 MB | 22 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Betula Noir LLC](https://appshunter.io/developer/6778465985) | [Shark River Studios LLC](https://appshunter.io/developer/1883500824) |

## 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


### BirdBrainz

[App page](https://appshunter.io/ios/app/birdbrainz-logic-puzzle/id6800088146)

A logic puzzle game where players deduce the correct placement of birds on a grid, following simple rules about rows, columns, and diagonals. Offers over 40,000 puzzles with unique solutions and beautiful bird artwork.

**Highlights:** Over 40,000 puzzles, Unique solution for every puzzle, Animated bird artwork, Six difficulty tiers, Helpful hints, Simple tap or drag controls

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

**In-app purchases:** none


## Frequently asked questions

### Is duk. free?

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

### Is BirdBrainz free?

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

### Which has better reviews, duk. or BirdBrainz?

duk. and BirdBrainz are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do duk. or BirdBrainz have ads?

Neither duk. nor BirdBrainz shows ads.

### Which is updated more often, duk. or BirdBrainz?

duk. ships an update every 11 days, and BirdBrainz monthly. Most recently, duk. was updated on October 24, 2026 and BirdBrainz on October 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.*