# ProKit vs Altimeter

The clearest difference is in-app purchases: ProKit at none against Altimeter's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Altimeter sells 3 in-app purchases, starting at $2.99 per 7 days. ProKit asks for nothing beyond the download.

ProKit ships an update every 2 weeks, Altimeter every 4 weeks. The most recent releases landed on September 2, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | ProKit | Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prokit-barometer-and-tools/id6743349151/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 25 MB | 8 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [omer yuksel](https://appshunter.io/developer/1735991224) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### ProKit

[App page](https://appshunter.io/ios/app/prokit-barometer-and-tools/id6743349151)

This utility app offers a suite of tools including a barometer for altitude and pressure, a speedometer, a decibel meter, a heart rate monitor, a compass, NFC tag management, and QR code generation/scanning. It also includes Sudoku puzzles and guided breathing exercises.

**Highlights:** Barometer for altitude and pressure, Speedometer with customization, Decibel meter with live graphs, Heart rate monitor via camera, NFC tag reader/writer, QR code creator and scanner, Sudoku puzzles with statistics, Guided breathing exercises

**In-app purchases:** none


### Altimeter

[App page](https://appshunter.io/ios/app/altimeter-gps-elevation/id6772261844)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Climb Log: Weekly | $2.99 | per 7 days |
| Summit Height: Yearly | $14.99 | per year |
| Offline Altitude: Pay Once | $29.99 | one-time |


## Frequently asked questions

### Is ProKit free?

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

### Is Altimeter free?

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

### Do ProKit or Altimeter have ads?

Neither ProKit nor Altimeter shows ads.

### Which is updated more often, ProKit or Altimeter?

ProKit ships an update every 2 weeks, and Altimeter every 4 weeks. Most recently, ProKit was updated on September 2, 2026 and Altimeter on August 21, 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.*