# Altitude Pro+ GPS Altimeter vs Zero Meter

The clearest difference is in-app purchases: Zero Meter at none against Altitude Pro+ GPS Altimeter's 2. Zero Meter also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Altitude Pro+ GPS Altimeter sells 2 in-app purchases, starting at $0.99 per month. Zero Meter asks for nothing beyond the download.

## The numbers

| Metric | Altitude Pro+ GPS Altimeter | Zero Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Daily | — |
| Size | 5 MB | 2 MB |
| Requires iOS | 17.0 | **16** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [宣霖 吕](https://appshunter.io/developer/1872085676) | [辉 吴](https://appshunter.io/developer/1893273006) |

## What reviewers say

### Altitude Pro+ GPS Altimeter

[App page](https://appshunter.io/ios/app/altitude-pro-plus-gps-altimeter/id6758463916)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annual Subscription | $8.99 | per year |


### Zero Meter

[App page](https://appshunter.io/ios/app/zero-meter/id6772456073)

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

**In-app purchases:** none


## Frequently asked questions

### Is Altitude Pro+ GPS Altimeter free?

Altitude Pro+ GPS Altimeter is free to download, with in-app purchases available.

### Is Zero Meter free?

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

### Do Altitude Pro+ GPS Altimeter or Zero Meter have ads?

Neither Altitude Pro+ GPS Altimeter nor Zero Meter shows ads.

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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.*