# Barometer & Altimeter Pro vs MartApp

The clearest difference is in-app purchases: MartApp at none against Barometer & Altimeter Pro's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Barometer & Altimeter Pro sells 2 in-app purchases, starting at $1.99 per month. MartApp asks for nothing beyond the download.

## The numbers

| Metric | Barometer & Altimeter Pro | MartApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (14 ratings)](https://appshunter.io/ios/app/barometer-and-altimeter-pro/id6762895694/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Free | — |
| Size | 37 MB | 5 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tirin](https://appshunter.io/developer/1665717789) | [Marta Rodriguez Gargallo](https://appshunter.io/developer/1896516911) |

## What reviewers say

### Barometer & Altimeter Pro

[App page](https://appshunter.io/ios/app/barometer-and-altimeter-pro/id6762895694)

This application precisely measures atmospheric pressure and tracks your elevation in real time. It provides storm warnings based on pressure changes and displays historical trend charts. Ideal for outdoor enthusiasts and weather-conscious individuals.

**Highlights:** Precise air pressure measurement, Live elevation tracking, Trip gain calculation, Storm warning alerts, Historical trend charts, Customizable interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Barometer Monthly | $1.99 | per month |
| Barometer Lifetime | $4.99 | one-time |


### MartApp

[App page](https://appshunter.io/ios/app/martapp/id6767880524)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Barometer & Altimeter Pro free?

Barometer & Altimeter Pro is free to download, with in-app purchases available.

### Is MartApp free?

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

### Do Barometer & Altimeter Pro or MartApp have ads?

Neither Barometer & Altimeter Pro nor MartApp 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.*