# Accelerometer vs altimeter professional

The clearest difference is in-app purchases: altimeter professional at none against Accelerometer's 1. altimeter professional also leads on ratings volume (20 vs 1). Accelerometer's advantage is ads (none vs shown) and update cadence (every 5 months vs every 67 months). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. Accelerometer sells 1 one-off in-app purchase. altimeter professional asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for Accelerometer against 4.0 for altimeter professional. That said, the two scores are not equally well evidenced: altimeter professional has 20 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 54% of Accelerometer's written reviews are positive against 61% of altimeter professional's.

Accelerometer ships an update every 5 months, altimeter professional every 67 months. The most recent releases landed on June 9, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Accelerometer | altimeter professional |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/accelerometer-g-force-meter/id499629589/reviews) | [4.0 (20 ratings)](https://appshunter.io/ios/app/altimeter-professional/id1033563012/reviews) |
| Number of ratings | 1 | **20** |
| Positive reviews | 53.7% of reviews | **61.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 67 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 27 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jan Halozan](https://appshunter.io/developer/482137824) | [FFZ srl](https://appshunter.io/developer/533499912) |

## What reviewers say

### Accelerometer

[App page](https://appshunter.io/ios/app/accelerometer-g-force-meter/id499629589)

Transform your device into a precise 3-axis accelerometer. Monitor live acceleration and G-force readings, record motion data, and export it in various formats for detailed analysis. Ideal for experiments, testing, and engineering.

**Highlights:** Realtime X/Y/Z acceleration, G-force measurement, Record motion sessions, CSV/JSON/XML export, Adjustable sample rate, Max/Min tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Accelerometer Pro | $1.99 | one-time |


### 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:** none


## Frequently asked questions

### Is Accelerometer free?

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

### Is altimeter professional free?

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

### Which has better reviews, Accelerometer or altimeter professional?

Accelerometer and altimeter professional are both rated 4.0 out of 5 on the App Store, from 1 and 20 ratings respectively.

### Do Accelerometer or altimeter professional have ads?

altimeter professional shows ads; Accelerometer does not.

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

Accelerometer ships an update every 5 months, and altimeter professional every 67 months. Most recently, Accelerometer was updated on June 9, 2026 and altimeter professional on September 26, 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.*