# altimeter professional vs Keepr

The clearest difference is in-app purchases: Keepr at none against altimeter professional's 3. Keepr also leads on ads (none vs shown) and update cadence (every 9 days vs every 67 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. altimeter professional sells 3 in-app purchases, starting at $1.99 per month. Keepr asks for nothing beyond the download.

altimeter professional ships an update every 67 months, Keepr every 9 days. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | altimeter professional | Keepr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (27 ratings)](https://appshunter.io/ios/app/altimeter-professional/id1033563012/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 61.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 67 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 27 MB | 27 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [FFZ srl](https://appshunter.io/developer/533499912) | [Francesco Delli Noci](https://appshunter.io/developer/6801819326) |

## What reviewers say

### altimeter professional

[App page](https://appshunter.io/ios/app/altimeter-professional/id1033563012)

This app provides highly accurate altitude and position detection using GPS and barometric sensors. It features a graphical analog display with digital readings, tracks maximum altitude reached, and allows users to calibrate readings. You can also take and share photos with location data or send emergency SMS messages with GPS coordinates.

**Highlights:** Accurate altitude and position detection, Analog and digital display, Maximum altitude tracking, Photo capture with altitude and location, Emergency SMS with GPS coordinates, Altitude calibration, Meters or feet display

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Month | $1.99 | per month |
| Premium 6 Months | $6.99 | per 6 months |
| Premium 1 Year | $11.99 | per year |


### Keepr

[App page](https://appshunter.io/ios/app/keepr/id6803627428)

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

**In-app purchases:** none


## Frequently asked questions

### Is altimeter professional free?

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

### Is Keepr free?

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

### Do altimeter professional or Keepr have ads?

altimeter professional shows ads; Keepr does not.

### Which is updated more often, altimeter professional or Keepr?

altimeter professional ships an update every 67 months, and Keepr every 9 days. Most recently, altimeter professional was updated on November 2, 2026 and Keepr on October 29, 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.*