# Light Block vs Subtract One

The clearest difference is iOS requirement: Light Block at 9.0 against Subtract One's 12.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Light Block | Subtract One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 30 months |
| Size | 83 MB | 9 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Volt Games Lda](https://appshunter.io/developer/1447238738) | [Duo Pisceses, Inc.](https://appshunter.io/developer/850707063) |

## What reviewers say

### Light Block

[App page](https://appshunter.io/ios/app/light-block/id1467817502)

**Features:** macOS Compatibility

**In-app purchases:** none


### Subtract One

[App page](https://appshunter.io/ios/app/subtract-one/id1506850034)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Light Block free?

Light Block is free to download, with no in-app purchases.

### Is Subtract One free?

Subtract One is free to download, with no in-app purchases.

### Do Light Block or Subtract One have ads?

Neither Light Block nor Subtract One shows ads.

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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.*