# Flash Bac Maths vs Sofia

The clearest difference is price: Sofia at Free against Flash Bac Maths's $3.99. Sofia also leads on device support. Flash Bac Maths's advantage is in-app purchases (none vs 2). On iOS requirement there is nothing between them.

Sofia is free to download; Flash Bac Maths costs $3.99 up front. Sofia sells 2 in-app purchases, starting at $8.99 per month. Flash Bac Maths asks for nothing beyond the download.

## The numbers

| Metric | Flash Bac Maths | Sofia |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 10 days |
| Size | 35 MB | 49 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hatem Maati](https://appshunter.io/developer/1182835931) | [Mathieu Askamp](https://appshunter.io/developer/1820236458) |

## What reviewers say

### Flash Bac Maths

[App page](https://appshunter.io/ios/app/flash-bac-maths/id6447762415)

**In-app purchases:** none


### Sofia

[App page](https://appshunter.io/ios/app/sofia-reussis-ton-bac/id6759519519)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mensuel | $8.99 | per month |
| Annuel | $69.99 | per year |


## Frequently asked questions

### Is Flash Bac Maths free?

Flash Bac Maths costs $3.99, with no in-app purchases.

### Is Sofia free?

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

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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.*