# Chamonix vs ACS2

The clearest difference is ads: ACS2 at none against Chamonix's shown. ACS2 also leads on update cadence (every 2 days vs every 5 weeks) and iOS requirement (12.0 vs 15.0). On price, 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.

Chamonix ships an update every 5 weeks, ACS2 every 2 days. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Chamonix | ACS2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (523 ratings)](https://appshunter.io/ios/app/chamonix/id396944435/reviews)** | — |
| Number of ratings | **523** | — |
| Positive reviews | 63.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 60 MB | 45 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [COMPAGNIE DU MONT BLANC](https://appshunter.io/developer/1453044169) | [Ministry of Planning and Development](https://appshunter.io/developer/1823026629) |

## What reviewers say

### Chamonix

[App page](https://appshunter.io/ios/app/chamonix/id396944435)

Your official guide to Chamonix and its ski resorts. Get real-time updates on piste and lift openings, weather, snow conditions, and access interactive town maps. Plan your activities with event listings and transport schedules.

**Highlights:** Real-time piste and ski-lift status, Ski pass top-up, Weather and snow forecasts, Augmented reality mountain positioning, Interactive town map with services, Event and activity listings, Transport timetables

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🗺️ Comprehensive piste maps and trail information
- 🌤️ Accurate weather forecasts and predictions
- 📡 Live lift status and opening information
- 📹 Panoramic webcams for mountain views
- 🚌 Bus and train schedule information

**What reviewers complain about**

- 🐛 Frequent app crashes on launch
- 🐛 Crashes when accessing maps or specific features
- 😤 Difficult user interface navigation
- 🔄 App resets unexpectedly to home page
- ⚠️ Inaccurate or outdated lift status information

**Reported bugs**

- App crashes immediately upon opening after updates
- App crashes when loading main screen
- Weather menu not functioning or stuck on single location
- Lift status feature broken (particularly Les Grands Montets)
- Maps crash the app when accessed

**Requested features**

- English language version or language switching option
- Bus route planner with live updates
- Piste listings organized by color coding instead of alphabetically
- Updated lift information (e.g., Tabe lift at Grand Montets)
- Improved weather forecast UI and accessibility


### ACS2

[App page](https://appshunter.io/ios/app/acs2/id6749678960)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chamonix free?

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

### Is ACS2 free?

ACS2 is free to download, with no in-app purchases.

### Do Chamonix or ACS2 have ads?

Chamonix shows ads; ACS2 does not.

### Which is updated more often, Chamonix or ACS2?

Chamonix ships an update every 5 weeks, and ACS2 every 2 days. Most recently, Chamonix was updated on October 13, 2026 and ACS2 on October 5, 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.*