# Blind Number Challenge vs Slice Reactor

The clearest difference is in-app purchases: Blind Number Challenge at none against Slice Reactor's 1. Blind Number Challenge also leads on iOS requirement (12.0 vs 17.0). Slice Reactor's advantage is ads (none vs shown) and update cadence (every 4 days vs every 6 months). On price and device support there is nothing between them.

Both are free to download. Slice Reactor sells 1 one-off in-app purchase. Blind Number Challenge asks for nothing beyond the download.

Blind Number Challenge ships an update every 6 months, Slice Reactor every 4 days. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Blind Number Challenge | Slice Reactor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.4 (12 ratings)](https://appshunter.io/ios/app/blind-number-challenge/id6447437703/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 30 MB | 9 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Batuhan Tarhanacioglu](https://appshunter.io/developer/1678286405) | [Ahmad AlBarqawi](https://appshunter.io/developer/1500625654) |

## What reviewers say

### 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


### Slice Reactor

[App page](https://appshunter.io/ios/app/slice-reactor-space-reflex/id6782610372)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Supporter Pack | $2.99 | one-time |


## Frequently asked questions

### Is Blind Number Challenge free?

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

### Is Slice Reactor free?

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

### Do Blind Number Challenge or Slice Reactor have ads?

Blind Number Challenge shows ads; Slice Reactor does not.

### Which is updated more often, Blind Number Challenge or Slice Reactor?

Blind Number Challenge ships an update every 6 months, and Slice Reactor every 4 days. Most recently, Blind Number Challenge was updated on November 4, 2026 and Slice Reactor on November 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.*