# Planet Formula vs Blind Number Challenge

The clearest difference is review sentiment: Planet Formula at 100% against Blind Number Challenge's 14%. Planet Formula also leads on rating (5.0 vs 1.4) and update cadence (every 2 months vs every 6 months). Blind Number Challenge's advantage is in-app purchases (none vs 3) and ratings volume (12 vs 3). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Planet Formula sells 3 one-off in-app purchases. Blind Number Challenge asks for nothing beyond the download.

Planet Formula holds the better App Store score, 5.0 against 1.4. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews point the same way: 100% of Planet Formula's written reviews are positive against 14% of Blind Number Challenge's.

Planet Formula ships an update every 2 months, Blind Number Challenge every 6 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Planet Formula | Blind Number Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/planet-formula/id1563592534/reviews)** | [1.4 (12 ratings)](https://appshunter.io/ios/app/blind-number-challenge/id6447437703/reviews) |
| Number of ratings | 3 | **12** |
| Positive reviews | **100.0% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 20 MB | 30 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [x2line.com LLC](https://appshunter.io/developer/425135293) | [Batuhan Tarhanacioglu](https://appshunter.io/developer/1678286405) |

## What reviewers say

### Planet Formula

[App page](https://appshunter.io/ios/app/planet-formula/id1563592534)

Embark on a celestial match-3 adventure across the Solar System. Solve 125 unique puzzles by earning points, breaking ice, or collecting coins within a limited number of moves. Utilize powerful planet combinations and strategic moves to overcome challenges.

**Highlights:** 125 unique match-3 levels, Special power-up planets, Strategic move mechanics, Ice tile and wall breaking, VoiceOver accessibility, T-chain and L-chain combinations

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra 4 Moves | $1.99 | one-time |
| Extra 8 Moves | $2.99 | one-time |
| Extra 15 Moves | $3.99 | one-time |


### Blind Number Challenge

[App page](https://appshunter.io/ios/app/blind-number-challenge/id6447437703)

Test your guessing abilities in this number challenge game. Select difficulty and number ranges, then use clues like 'too high' or 'too low' to find the hidden number within a limited number of attempts. Features multiple modes and difficulty levels for endless fun.

**Highlights:** Guess hidden numbers, Adjust difficulty and number range, Receive high/low clues, Multiple game modes (Easy, Medium, Hard), Leaderboard rankings, Brain teaser puzzles

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

**In-app purchases:** none


## Frequently asked questions

### Is Planet Formula free?

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

### Is Blind Number Challenge free?

Blind Number Challenge is free to download, with no in-app purchases.

### Which has better reviews, Planet Formula or Blind Number Challenge?

Planet Formula is rated higher. Planet Formula averages 5.0 out of 5 from 3 ratings, while Blind Number Challenge averages 1.4 from 12 ratings.

### Do Planet Formula or Blind Number Challenge have ads?

Both Planet Formula and Blind Number Challenge show ads.

### Which is updated more often, Planet Formula or Blind Number Challenge?

Planet Formula ships an update every 2 months, and Blind Number Challenge every 6 months. Most recently, Planet Formula was updated on October 25, 2026 and Blind Number Challenge on October 25, 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.*