# Altimeter Offline vs Ski Instructor PRO

The clearest difference is ads: Ski Instructor PRO at none against Altimeter Offline's shown. Ski Instructor PRO also leads on update cadence (every 4 days vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Altimeter Offline ships an update every 4 months, Ski Instructor PRO every 4 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Altimeter Offline | Ski Instructor PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (6 ratings)](https://appshunter.io/ios/app/altimeter-offline/id928973448/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 8 MB | 54 MB |
| Requires iOS | 13.3 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arnau Egea](https://appshunter.io/developer/902788505) | [Eugene Tretyakov](https://appshunter.io/developer/1581357128) |

## What reviewers say

### Altimeter Offline

[App page](https://appshunter.io/ios/app/altimeter-offline/id928973448)

Measure your current altitude and geographic coordinates without an internet connection. Ideal for outdoor activities like hiking and climbing where network coverage is unreliable. Track your highest altitude and share your progress with friends.

**Highlights:** Offline altimeter functionality, Displays geographic coordinates, Records highest altitude reached, Altitude in meters and feet, Customizable wallpapers, GPS sensor auto-off to save battery

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

**In-app purchases:** none


### Ski Instructor PRO

[App page](https://appshunter.io/ios/app/ski-instructor-pro/id6474944493)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Altimeter Offline free?

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

### Is Ski Instructor PRO free?

Ski Instructor PRO is free to download, with no in-app purchases.

### Do Altimeter Offline or Ski Instructor PRO have ads?

Altimeter Offline shows ads; Ski Instructor PRO does not.

### Which is updated more often, Altimeter Offline or Ski Instructor PRO?

Altimeter Offline ships an update every 4 months, and Ski Instructor PRO every 4 days. Most recently, Altimeter Offline was updated on October 10, 2026 and Ski Instructor PRO on October 13, 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.*