# Big Mars vs Hello STMG

The clearest difference is in-app purchases: Big Mars at none against Hello STMG's 3. Hello STMG's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17). On price and ads there is nothing between them.

Both are free to download. Hello STMG sells 3 in-app purchases, starting at $17.99 per month. Big Mars asks for nothing beyond the download.

## The numbers

| Metric | Big Mars | Hello STMG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 437 MB | 23 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DEV.ID](https://appshunter.io/developer/1154264009) | [Mohamed YOUNES](https://appshunter.io/developer/1885515546) |

## What reviewers say

### Big Mars

[App page](https://appshunter.io/ios/app/big-mars/id6471841981)

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

**In-app purchases:** none


### Hello STMG

[App page](https://appshunter.io/ios/app/hello-stmg/id6760651433)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intensif – 1 mois | $17.99 | per month |
| Avancé – 3 mois | $39.99 | per 3 months |
| Essentiel – 6 mois | $49.99 | per 6 months |


## Frequently asked questions

### Is Big Mars free?

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

### Is Hello STMG free?

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

### Do Big Mars or Hello STMG have ads?

Neither Big Mars nor Hello STMG 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.*