# Altimeter X — GPS and barometric altitude

> Measures altitude using GPS, barometer, or elevation database. (iPhone/iPad app by LiveWorlds.)

- Source: https://appshunter.io/ios/app/altimeter-x/id414640034 (this page in markdown: same URL + `.md`)
- Developer: [LiveWorlds](https://appshunter.io/developer/414640037)
- Category: Navigation
- Price: $0.99
- Rating: 2.50/5 from 2 App Store ratings · 73 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 1 MB
- Languages: American English
- Released: 2011-01-18
- Data updated: 2026-09-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/altimeter-x/id414640034/reviews.md

## What is Altimeter X?

iOS/GPS altitude
Altitude estimated by the device's location service. It works reasonably well in most situations but can't track small changes and can be unreliable indoor.
					
Barometric altitude (iPhone 6 minimum)
Altitude based on the device's barometer. This is how most hardware altimeters work. It can track very small relative variations but must be calibrated with weather data or GPS. Calibration with weather data grabs current sea-level pressure and temperature at your location from a nearby weather station. GPS calibration takes the current iOS/GPS altitude as a starting point then uses the barometer to track changes.
					
Elevation database
This method displays earth surface elevation at your location by polling an elevation database. It works even with very imprecise location data but requires network access. Surface elevation usually includes buildings and trees.

## Key features

- GPS altitude estimation
- Barometric altitude tracking
- Elevation database lookup
- Weather data calibration
- GPS altitude calibration
- Offline elevation data

## Chart rankings

- #111 in Top Paid · Navigation (US App Store)

## Recent user reviews (10 of 73)

All indexed reviews: https://appshunter.io/ios/app/altimeter-x/id414640034/reviews.md

### 4/5 — Son widget Apple CarPlay !!!

*2026-02-12*

Une superbe app, à qui il ne manque cruellement que son widget Apple CarPlay pour la voiture… pour la 5eme étoile. 
Dans l’attente, j’ai acheté !

### 5/5 — After updating to iOS 17.4 it no longer works!

*2024-03-20*

After updating to iOS 17.4 it no longer works!

### 4/5 — Altimeter

*2020-11-10*

Cool.it says open but it’s not even on my iPad!,?.

### 5/5 — Le top

*2019-09-27*

La version 3 est un bond en avant. En mode baromètre, je peux même voir varier l’altitude en levant le bras. Vivement Conseillée !

### 1/5 — Captain

*2019-01-06*

Only meters and NO FEET. 

                 NUL !

**Developer response:** The app uses the preferences set on your iPhone globally. So if your region uses meters, Altimeter X uses this unit. Since version 3.0, you can bypass this setting in the app (gear icon). Check it out.

### 1/5 — Where is the feet?

*2018-10-31, version 2.0*

Can we have the option of feet as well as metres please?

### 1/5 — Doesn’t work

*2018-06-26, version 2.0*

Received one accurate signal. Then fails to work at all, simply showing previous location info. Tried everything. Wasted £1.

### 3/5 — Was good

*2017-11-10, version 2.0*

Last update rook away option to switch between feet snd meters.

### 1/5 — Nul

*2017-09-15*

Cela ne sert à rien
Même pas possible de choisir les pieds ou les mètres

**Developer response:** L’application se base par défaut sur les réglages de votre iPhone. Depuis la version 3.0, il est possible de forcer l’affichage en pieds (icône roue crantée). J’espère que ce changement et d’autres améliorations vous donneront satisfaction.

### 3/5 — Needs better description

*2016-04-12, version 1.3*

This app should really be promoted as a tool for flying.  At least they should let users know there isn't a great deal of accuracy.  If you need something that had less than 10' range of error, than this app is not for you.

## Frequently asked questions about Altimeter X

### What are the different ways this app measures altitude?

The app offers three primary methods for altitude measurement. It can use your device's GPS location services, which is generally reliable but may struggle with small changes or indoor use. It also utilizes the device's barometer, which excels at tracking relative changes but requires calibration. Finally, it can query an elevation database for surface elevation at your location, which works even with imprecise GPS but needs network access.

### How does the barometric altitude feature work?

The barometric altitude feature relies on your device's built-in barometer. To ensure accuracy, it can be calibrated using either current weather data (sea-level pressure and temperature from a nearby station) or by taking a starting point from the GPS altitude and then using the barometer to track subsequent changes.

### Can I use this app without an internet connection?

Yes, you can use the app without an internet connection for altitude readings. The GPS and barometric altitude methods do not require network access. The elevation database method does require network access to poll the database, but it can work with very imprecise location data.

### What devices are compatible with the barometric altitude feature?

The barometric altitude feature is available on devices with a built-in barometer. Based on the description, this includes the iPhone 6 and newer models. Older devices or those without a barometer will rely on GPS or the elevation database for altitude readings.

### What is the difference between GPS altitude and barometric altitude?

GPS altitude uses your device's location services to estimate your height above sea level. It's generally good for overall position but can be less precise for tracking small changes. Barometric altitude uses the device's barometer to measure air pressure, which correlates with altitude. This method is excellent for detecting small relative changes in elevation but requires calibration to provide an accurate absolute altitude.

## Version history (last 5 releases)

### 3.1 — 2024-06-04

Bugfix for iOS 17.5

### 3.0 — 2019-09-26

Version 3.0 is a complete overhaul that adds the ability to use the barometer to track your altitude (iPhone 6 minimum).

### 2.0 — 2017-09-11

Extended compatibility

### 1.3 — 2013-09-09

Flattened design.
Dynamic lighting (put your iPhone flat on a table then grab it to see it in action).

### 1.2 — 2011-02-02

- GPS assisted by NASA topographic data
- Quick start
- Works indoor
- New icon
- New design

## Apps similar to Altimeter X

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Travel Altimeter & Elevation](https://appshunter.io/ios/app/travel-altimeter-and-elevation/id486556174) | 4.6 (43,428) | Free | Navigation |
| [Altimeter+](https://appshunter.io/ios/app/altimeter-plus/id417204570) | 4.5 (700) | $1.99 | Navigation |
| [Air Navigation Pro](https://appshunter.io/ios/app/air-navigation-pro/id301046057) | 4.6 (630) | Free | Navigation |
| [My Altitude](https://appshunter.io/ios/app/my-altitude/id465262694) | 4.8 (26,580) | Free | Navigation |
| [GPS Speedometer: Track Speed](https://appshunter.io/ios/app/gps-speedometer-track-speed/id711323002) | 4.6 (1,481) | Free | Navigation |
| [Altimeter GPS & Barometer](https://appshunter.io/ios/app/altimeter-gps-and-barometer/id572227849) | 4.6 (2,098) | Free | Navigation |

## More apps by LiveWorlds

- [Altimeter X Lite](https://appshunter.io/ios/app/altimeter-x-lite/id417441825)

All apps by LiveWorlds: https://appshunter.io/developer/414640037

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*