# Decrypto vs GMG Earth Matters

The clearest difference is update cadence: Decrypto at every 4 days against GMG Earth Matters's every 6 months. Decrypto also leads on ratings volume (124 vs 1). GMG Earth Matters's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 85%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Decrypto sells 8 one-off in-app purchases and GMG Earth Matters sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

GMG Earth Matters holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Decrypto has 124 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 85% of Decrypto's written reviews are positive against 100% of GMG Earth Matters's.

Decrypto ships an update every 4 days, GMG Earth Matters every 6 months. The most recent releases landed on October 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Decrypto | GMG Earth Matters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (124 ratings)](https://appshunter.io/ios/app/decrypto-cipher-cryptograms/id1023872874/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gmg-earth-matters/id1659225222/reviews)** |
| Number of ratings | **124** | 1 |
| Positive reviews | 85.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 93 MB |
| Requires iOS | 17.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Incognitum, MB](https://appshunter.io/developer/1019812236) | [Gold Medal Games](https://appshunter.io/developer/307325967) |

## What reviewers say

### Decrypto

[App page](https://appshunter.io/ios/app/decrypto-cipher-cryptograms/id1023872874)

Engage in a captivating puzzle game where you decode classic ciphers and solve cryptogram word puzzles. This app offers a challenging yet accessible experience for those who enjoy riddles and code-breaking. It's designed for curious minds to train their brains with pure, ad-free fun.

**Highlights:** Decode classic ciphers, Solve cryptogram word puzzles, Break challenging codes, Brain training, VoiceOver support, Ad-free gameplay

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Help Points | $0.99 | one-time |
| 5 Keys | $1.49 | one-time |
| Remove ads | $1.99 | one-time |
| 15 Keys | $3.49 | one-time |
| 30 Keys | $5.49 | one-time |
| Unlimited Keys | $11.49 | one-time |
| Solutions | $14.99 | one-time |
| Solutions & Unlimited Keys | $19.99 | one-time |


### GMG Earth Matters

[App page](https://appshunter.io/ios/app/gmg-earth-matters/id1659225222)

Solve environmental puzzles by combining elemental forces to combat pollution across the globe and beyond. Progress through numerous levels and unlock achievements in this engaging educational game.

**Highlights:** Combine elements to solve puzzles, Fight pollution across 7 continents, 135 challenging levels, Earn 28 achievements, In-game tutorial

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Coins | $1.99 | one-time |
| 4000 Coins | $4.99 | one-time |
| 10000 Coins | $9.99 | one-time |


## Frequently asked questions

### Is Decrypto free?

Decrypto is free to download, with in-app purchases available.

### Is GMG Earth Matters free?

GMG Earth Matters is free to download, with in-app purchases available.

### Which has better reviews, Decrypto or GMG Earth Matters?

GMG Earth Matters is rated higher. Decrypto averages 4.8 out of 5 from 124 ratings, while GMG Earth Matters averages 5.0 from 1 ratings.

### Do Decrypto or GMG Earth Matters have ads?

Neither Decrypto nor GMG Earth Matters shows ads.

### Which is updated more often, Decrypto or GMG Earth Matters?

Decrypto ships an update every 4 days, and GMG Earth Matters every 6 months. Most recently, Decrypto was updated on October 29, 2026 and GMG Earth Matters on October 6, 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.*