# SNRTC vs Reunionbysat

The clearest difference is in-app purchases: SNRTC at none against Reunionbysat's 4. SNRTC also leads on iOS requirement (15.0 vs 18.6). Reunionbysat's advantage is ads (none vs shown) and update cadence (every 3 days vs every 10 months). On price and device support there is nothing between them.

Both are free to download. Reunionbysat sells 4 in-app purchases, starting at $8.99 per month. SNRTC asks for nothing beyond the download.

SNRTC ships an update every 10 months, Reunionbysat every 3 days. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SNRTC | Reunionbysat |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 3 days** |
| Monetization | — | Paid |
| Size | 48 MB | 594 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [FEDERATION NATIONALE CFE-CGC TRANSPORTS](https://appshunter.io/developer/1606721287) | [Christophe Georget](https://appshunter.io/developer/1810379857) |

## What reviewers say

### SNRTC

[App page](https://appshunter.io/ios/app/snrtc/id1606720835)

**Features:** macOS Compatibility

**In-app purchases:** none


### Reunionbysat

[App page](https://appshunter.io/ios/app/reunionbysat/id6744999580)

This app provides real-time data on volcanic activity and local weather for Reunion Island. It features seismic monitoring, interactive maps, advanced navigation, and eruption simulations. Stay informed about safety alerts and environmental conditions.

**Highlights:** Real-time seismic monitoring, Interactive volcanic activity maps, Advanced GPS navigation with trail alerts, Lava flow simulation, High-resolution local weather forecasts, Smart safety and emergency alerts

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Accès Premium 1 mois | $8.99 | per month |
| Accès premium 1 an | $44.99 | per year |
| Accès Données Premium – 1 an | $44.99 | one-time |
| Accès à vie – Données Premium | $79.99 | one-time |


## Frequently asked questions

### Is SNRTC free?

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

### Is Reunionbysat free?

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

### Do SNRTC or Reunionbysat have ads?

SNRTC shows ads; Reunionbysat does not.

### Which is updated more often, SNRTC or Reunionbysat?

SNRTC ships an update every 10 months, and Reunionbysat every 3 days. Most recently, SNRTC was updated on September 15, 2026 and Reunionbysat on September 24, 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.*