# XCSoar vs Altimeter Alarm

The clearest difference is price: XCSoar at Free against Altimeter Alarm's $2.99. XCSoar also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.6). Altimeter Alarm's advantage is update cadence (daily vs monthly). On ads and in-app purchases there is nothing between them.

XCSoar is free to download; Altimeter Alarm costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

XCSoar ships an update monthly, Altimeter Alarm daily. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | XCSoar | Altimeter Alarm |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/xcsoar/id6741046464/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Free | — |
| Size | 35 MB | 12 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [praechtig gbr](https://appshunter.io/developer/1483050323) | [Maceng](https://appshunter.io/developer/489939717) |

## What reviewers say

### XCSoar

[App page](https://appshunter.io/ios/app/xcsoar/id6741046464)

An open-source flight navigation tool for gliders and sailplanes. It offers a moving map, task planning, airspace data, and thermal detection to aid pilots in route optimization and real-time flight information.

**Highlights:** Moving map display, Task planning, Airspace information, Thermal detection, Route optimization, Real-time flight data

**Features:** Vision Pro support

**In-app purchases:** none


### Altimeter Alarm

[App page](https://appshunter.io/ios/app/altimeter-alarm/id6768745102)

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

**In-app purchases:** none


## Frequently asked questions

### Is XCSoar free?

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

### Is Altimeter Alarm free?

Altimeter Alarm costs $2.99, with no in-app purchases.

### Do XCSoar or Altimeter Alarm have ads?

Neither XCSoar nor Altimeter Alarm shows ads.

### Which is updated more often, XCSoar or Altimeter Alarm?

XCSoar ships an update monthly, and Altimeter Alarm daily. Most recently, XCSoar was updated on November 4, 2026 and Altimeter Alarm on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*