# Flat vs Sentient Spire

The clearest difference is iOS requirement: Flat at 13.0 against Sentient Spire's 15.1. 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 | Flat | Sentient Spire |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 11 MB | 44 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brice Leroy](https://appshunter.io/developer/1684542175) | [XYBERTEQ INNOVATIONS SDN. BHD.](https://appshunter.io/developer/1850281779) |

## What reviewers say

### Flat

[App page](https://appshunter.io/ios/app/flat-scanner/id6448391249)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentient Spire

[App page](https://appshunter.io/ios/app/sentient-spire-mobile-defense/id6761624367)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flat free?

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

### Is Sentient Spire free?

Sentient Spire is free to download, with no in-app purchases.

### Do Flat or Sentient Spire have ads?

Neither Flat nor Sentient Spire 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.*