Decoder vs GiiKER
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.
GiiKER
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Crack the hidden code. GiiKER is a minimal color-code deduction puzzle. The game secretly picks a 4-symbol code from 7 colors — your job is to figure it out. Each round you submit a guess, read the feedback, and narrow down the answer with logic. Solve it before your attempts run out. Simple to learn, hard to master. TWO FEEDBACK MODES • Beginner — a colored bar under each slot tells you exactly how that symbol scored: right spot, wrong spot, or not in the code. • Classic — a summary of clues for the whole row, without revealing which slot is which. A pure test of deduction. ADJUSTABLE DIFFICULTY • Allow or disallow duplicate colors • Choose how much history you can see • Beginner, Standard, and Hard presets BUILT FOR EVERYONE • Display symbols as colors, numbers (1–7), or both — no one is left out by color alone • Clean, tactile controls with a signature drag-to-pick color selector PLAY ANYWHERE • 100% offline — no account, no internet, no ads tracking you • Your scores stay on your device No sign-up. No clutter. Just you and the code.
Screenshots
Verdict
The clearest difference is iOS requirement: Decoder at 7.0 against GiiKER's 13.0. 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.
| Parameter | Decoder | GiiKER |
|---|---|---|
| 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 | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 1 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Edwin Hou | WEIMING GAO |
In-app purchases
Decoder
No in-app purchases
GiiKER
No in-app purchases









