duk. vs BirdBrainz
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
duk.
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.
- Numbered lily pad stepping mechanic
- 80 classic ponds
- Daily puzzles (easy, medium, hard)
- Streak tracking for daily play
- No ads or accounts
- Offline play
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duk. is a cozy little puzzle about duk trying to reach his friend goose. each lily pad holds a number, so you step exactly that many pads across the water, sinking the one you leave behind, wrapping around the pond's edges, until every pad is gone and you land on goose. 2 ways to play: • classic: a journey through 80 ponds, each named for a real water lily, growing gently harder as you go. • daily: a fresh puzzle every day at easy, medium, or hard. a win on any tier keeps your streak going. no ads. no accounts. no internet required. nothing tracked. made for a calm few minutes, whenever you need them.
BirdBrainz
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.
- Over 40,000 puzzles
- Unique solution for every puzzle
- Animated bird artwork
- Six difficulty tiers
- Helpful hints
- Simple tap or drag controls
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Train your brain with logic. Fall in love with the birds. BirdBrainz is a colorful puzzle where a flock of feathered friends absolutely refuse to share a row, a column, or so much as a diagonal glance. Your job: figure out exactly where each one belongs, using nothing but deduction. Every puzzle is generated to have exactly one solution. There's no guessing required—only logic. Place a bird where the others don't like, and the newcomer startles them away, feathers ruffling in a huff. Whether you have two minutes or twenty, BirdBrainz offers relaxing puzzles that reward careful thinking—and a cast of characters that make solving them fun. FEATURES • More than 40,000 puzzles • One unique solution for every puzzle • Beautiful animated bird artwork, with signature reactions for every species • Six difficulty tiers, from a gentle warm-up to seriously tricky, unlocking as you improve • Helpful hints when you're stuck • Simple controls—tap or drag birds into place EASY TO LEARN Each bird has its own home. Birds don't share rows. Birds don't share columns. Birds can't perch next to other birds, even diagonally. Those simple rules combine to form a huge range of puzzles, from simple to seriously tricky. HOWEVER YOU LIKE TO SOLVE You can mark off every impossible cell before placing a single bird — total certainty, one step at a time. Or you can place a bird the moment it feels right, then backtrack if a bird objects. Most of the time you'll land somewhere in between, and BirdBrainz keeps up either way: mark, place, undo, repeat. There's no wrong way to think it through. MEET THE CAST You'll start with 5 recurring birds and meet 4 more as you progress—from the bold red Cardinal and the sharp-crested Blue Jay to the tiny, hovering Hummingbird and the round, watchful Snowy Owl. Each one has its own look, its own moves, and its own opinion about being told where to sit. RELAXING No timers. No rushing. No pressure. Just you, colorful birds, and satisfying deductions. Download BirdBrainz and see how many puzzles—and ruffled feathers—you can rack up. Terms of Use (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sharkriverstudios.com/birdbrainz/privacy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | duk. | BirdBrainz |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 11 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 8 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Betula Noir LLC | Shark River Studios LLC |
Customer experience
duk.
BirdBrainz
In-app purchases
duk.
No in-app purchases
BirdBrainz
No in-app purchases









