# Compass Iris vs Altimy

The clearest difference is in-app purchases: Compass Iris at none against Altimy's 1. Compass Iris also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Altimy sells 1 one-off in-app purchase. Compass Iris asks for nothing beyond the download.

Compass Iris ships an update every 10 days, Altimy every 2 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Compass Iris | Altimy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kihyup Kim](https://appshunter.io/developer/1605718396) | [立 陈](https://appshunter.io/developer/6783000426) |

## What reviewers say

### Compass Iris

[App page](https://appshunter.io/ios/app/compass-iris/id6754727217)

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

**In-app purchases:** none


### Altimy

[App page](https://appshunter.io/ios/app/altimy-gps-compass-altimeter/id6787646023)

This app provides precise altitude, GPS location, and barometric pressure readings for outdoor activities. It features an electronic compass, sunrise/sunset times, and an offline map card. Designed for privacy, it processes all data on your device with no internet required.

**Highlights:** Real-time altitude readings, Precise GPS location tracking, Barometric pressure monitoring, Electronic compass with haptic feedback, Sunrise and sunset calculations, Offline map card, Night mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium Access | $1.99 | one-time |


## Frequently asked questions

### Is Compass Iris free?

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

### Is Altimy free?

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

### Do Compass Iris or Altimy have ads?

Neither Compass Iris nor Altimy shows ads.

### Which is updated more often, Compass Iris or Altimy?

Compass Iris ships an update every 10 days, and Altimy every 2 months. Most recently, Compass Iris was updated on October 30, 2026 and Altimy on November 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.*