# RainApp vs Barometer & Altimeter Pro

The clearest difference is update cadence: Barometer & Altimeter Pro at every 10 days against RainApp's every 2 months. Barometer & Altimeter Pro also leads on iOS requirement (17.0 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. RainApp sells 1 one-off in-app purchase and Barometer & Altimeter Pro sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

RainApp ships an update every 2 months, Barometer & Altimeter Pro every 10 days. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | RainApp | Barometer & Altimeter Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (7 ratings)](https://appshunter.io/ios/app/barometer-and-altimeter-pro/id6762895694/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 18 MB | 37 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ksenia Trifonova](https://appshunter.io/developer/1880690043) | [Tirin](https://appshunter.io/developer/1665717789) |

## What reviewers say

### RainApp

[App page](https://appshunter.io/ios/app/rainapp/id6759811442)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Apple Watch Access | $3.99 | one-time |


### 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 |


## Frequently asked questions

### Is RainApp free?

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

### Is Barometer & Altimeter Pro free?

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

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

Neither RainApp nor Barometer & Altimeter Pro shows ads.

### Which is updated more often, RainApp or Barometer & Altimeter Pro?

RainApp ships an update every 2 months, and Barometer & Altimeter Pro every 10 days. Most recently, RainApp was updated on October 20, 2026 and Barometer & Altimeter Pro on October 7, 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.*