# Brain Fever vs Decipher

The clearest difference is ratings volume: Brain Fever at 471 against Decipher's 2. Brain Fever also leads on update cadence (every 9 days vs monthly). Decipher's advantage is rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Brain Fever sells 10 one-off in-app purchases and Decipher sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Decipher holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Brain Fever has 471 ratings behind it against 2, so its average is the more settled of the two.

Brain Fever ships an update every 9 days, Decipher monthly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Brain Fever | Decipher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (471 ratings)](https://appshunter.io/ios/app/brain-fever-puzzle-game/id6744088534/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/decipher-cryptogram-puzzles/id6746736645/reviews)** |
| Number of ratings | **471** | 2 |
| Positive reviews | 34.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 650 MB | 31 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Doanh Hoang](https://appshunter.io/developer/1518566749) | [Errand Labs, LLC](https://appshunter.io/developer/1763432057) |

## What reviewers say

### Brain Fever

[App page](https://appshunter.io/ios/app/brain-fever-puzzle-game/id6744088534)

Engage your mind with over 230 levels of innovative brain puzzles. This game combines visual riddles, mind challenges, and tricky puzzles with engaging storylines and plot twists. Perfect for solo play or with friends and family.

**Highlights:** 230+ Levels, One-finger tap and drag gameplay, Visual puzzles and mind challenges, Tricky puzzles and logical IQ tests, Hundreds of stories with plot twists, Fun for all ages

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 hourglasses | $1.99 | one-time |
| Daily Hint Pack | $1.99 | one-time |
| 5 hints | $1.99 | one-time |
| 10 hints, double on first purchase. | $2.99 | one-time |
| 15 hints | $3.59 | one-time |
| Remove Ads | $3.99 | one-time |
| Premier pack | $4.99 | one-time |
| 20 hints, double on first purchase. | $4.99 | one-time |
| 45 hints | $4.99 | one-time |
| 50 hints, double on first purchase. | $9.99 | one-time |

**What reviewers like**

- 🚀 Great game
- 👍 Interesting and fun levels
- 👍 Variety of challenges

**What reviewers complain about**

- 🔍 Too many ads
- 🐛 Hotspots not working
- 🐛 Glitches and bugs
- 💰 Purchase issues

**Reported bugs**

- Levels freezing
- Purchased items not working

**Requested features**

- More levels
- Improved ad experience


### Decipher

[App page](https://appshunter.io/ios/app/decipher-cryptogram-puzzles/id6746736645)

Engage your mind with encrypted messages and famous quotes. This game tests your logic, vocabulary, and pattern recognition by having you crack substitution ciphers.

**Highlights:** Solve encrypted messages, Crack substitution ciphers, Test logic and vocabulary, Improve pattern recognition, Play with famous quotes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Hints | $1.99 | one-time |
| Decipher Remove Ads | $4.99 | one-time |
| 50 Hints | $4.99 | one-time |


## Frequently asked questions

### Is Brain Fever free?

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

### Is Decipher free?

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

### Which has better reviews, Brain Fever or Decipher?

Decipher is rated higher. Brain Fever averages 4.7 out of 5 from 471 ratings, while Decipher averages 5.0 from 2 ratings.

### Do Brain Fever or Decipher have ads?

Both Brain Fever and Decipher show ads.

### Which is updated more often, Brain Fever or Decipher?

Brain Fever ships an update every 9 days, and Decipher monthly. Most recently, Brain Fever was updated on November 4, 2026 and Decipher on November 5, 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.*