Decoder vs Kodulki
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Decoder
This app assists players in solving the Mastermind logic game. It helps narrow down possible solutions by analyzing your guesses and their scores. Continue inputting your game progress until only one solution remains.
- Mastermind game solver
- Input guesses and scores
- Reduces possible solutions
- Guides to single solution
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This is NOT another mastermind look alike game. However, if you like to play mastermind, you would want to get this application. This application helps you solve the mastermind game. Use the first picker to select a guess. Then select the score you got for that guess on the second picker and click Decode. The application will determine the remaining possible solutions. The number of remaining possible solution is shown on the toolbar. Repeat the above steps until one solution is left.
Kodulki
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Six little friends hide a code. Every guess returns one number: how many of them sit in the right place. Take your time, try a few ideas and see what you can work out. I made Kodulki for the moment when a puzzle clicks: three clues on the board, and suddenly only one code can be true. The friends are there to keep you company while you get there. WHAT'S INSIDE - The Kodulki: six colors, six characters. One of them greets you from the window every day, and they dance when you win. - A gentle start: a short tutorial with a friend as your guide, and in the first chapter you can check part of a row. - Campaign: 49 levels across seven chapters. Decoys, repeats, fog, frozen cells and chained codes. In Monochrome, the familiar colors give way to shades of gray. - Today's code: one puzzle per day, the same for the whole world. Weekend codes are harder and worth double. Keep your streak going and share your result. - Infinite: waves keep getting harder until one finally ends the run. - Duels at high noon: play a friend or a rival in real time, send a link to invite someone to your room, or race a run recorded by another player. - Leaderboard: a fresh race every week, plus the all-time ranking. Pick your own kodulka to show there and in duels. - Achievements: 18 goals across Campaign, Daily, Duels and Infinite, each with its own little scene. - Light and dark themes, soft sounds and haptics. Turn either off in Settings. A LITTLE HELP Earn marbles by clearing new Campaign levels, solving Today's code, winning online duels and unlocking achievements. Use them to reveal a color, reveal a slot you pick or take one more turn in Campaign and Infinite when hints are available. Today's code and duels stay hint-free. THE HONEST PART - Free. No ads. No payments. - Campaign, Infinite and Ghost Duels work offline. - No account needed for solo play. Sign in for cloud sync, online duels and the leaderboard. - Today's code needs an internet connection. - Marbles are earned through play and saved on your device. They cannot be bought with money. Just you, the code and a few friends.
Screenshots
Verdict
The clearest difference is update cadence: Kodulki at fortnightly against Decoder's every 7 months. Decoder's advantage is iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and device support 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.
Decoder ships an update every 7 months, Kodulki fortnightly. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.
| Parameter | Decoder | Kodulki |
|---|---|---|
| Price | Free | Free |
| Rating | 1.2 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 5 MB |
| Age rating | 4+ | 9+ |
| Developer | Edwin Hou | Alexander Tiutiunnyk |
In-app purchases
Decoder
No in-app purchases
Kodulki
No in-app purchases









