# Les Roches SOS vs SST IB Maths

The clearest difference is in-app purchases: Les Roches SOS at none against SST IB Maths's 1. Les Roches SOS also leads on iOS requirement (13.0 vs 15.0). SST IB Maths's advantage is update cadence (every 11 days vs every 13 months). On price, ads and device support there is nothing between them.

Both are free to download. SST IB Maths sells 1 in-app purchase, starting at $5.99 per month. Les Roches SOS asks for nothing beyond the download.

Les Roches SOS ships an update every 13 months, SST IB Maths every 11 days. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Les Roches SOS | SST IB Maths |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 11 days** |
| Size | 22 MB | 30 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Les Roches](https://appshunter.io/developer/1202813966) | [Kikodo](https://appshunter.io/developer/1647993863) |

## What reviewers say

### Les Roches SOS

[App page](https://appshunter.io/ios/app/les-roches-sos/id1205560554)

**Features:** macOS Compatibility

**In-app purchases:** none


### SST IB Maths

[App page](https://appshunter.io/ios/app/sst-ib-maths/id6444309821)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MEGA | $5.99 | per month |


## Frequently asked questions

### Is Les Roches SOS free?

Les Roches SOS is free to download, with no in-app purchases.

### Is SST IB Maths free?

SST IB Maths is free to download, with in-app purchases available.

### Do Les Roches SOS or SST IB Maths have ads?

Neither Les Roches SOS nor SST IB Maths shows ads.

### Which is updated more often, Les Roches SOS or SST IB Maths?

Les Roches SOS ships an update every 13 months, and SST IB Maths every 11 days. Most recently, Les Roches SOS was updated on October 5, 2026 and SST IB Maths on October 8, 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.*