# Pro Altimeter vs Postmiles

The clearest difference is price: Postmiles at Free against Pro Altimeter's $0.99. Postmiles also leads on rating (4.9 vs 3.8) and update cadence (every 6 weeks vs every 12 months). Pro Altimeter's advantage is chart position (#106 vs unranked) and ratings volume (39 vs 8). On ads, in-app purchases, monetization model and device support there is nothing between them.

Postmiles is free to download; Pro Altimeter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Postmiles holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 39 and 8 respectively.

Pro Altimeter ships an update every 12 months, Postmiles every 6 weeks. The most recent releases landed on September 26, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Pro Altimeter | Postmiles |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.8 (39 ratings)](https://appshunter.io/ios/app/pro-altimeter-barometric-plus-gps/id926603602/reviews) | **[4.9 (8 ratings)](https://appshunter.io/ios/app/postmiles/id6443652214/reviews)** |
| Number of ratings | **39** | 8 |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Best chart rank | **#106** | — |
| Size | 1 MB | 224 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Craig Hunter](https://appshunter.io/developer/286743884) | [Amarinder Grewal](https://appshunter.io/developer/1648083403) |

## What reviewers say

### Pro Altimeter

[App page](https://appshunter.io/ios/app/pro-altimeter-barometric-plus-gps/id926603602)

**Currently charting:** #106 Top Paid · Navigation (US App Store)

This app measures and computes altitude using your device's barometric pressure sensor and GPS. It offers multiple calibration methods, including GPS, manual input, and airport METAR data, for accurate readings. The interface is simple with large, easy-to-read numbers and offers distinct day and night display modes.

**Highlights:** Barometric and GPS altitude measurement, Multiple calibration methods (GPS, manual, METAR), Real-time accuracy estimates, Large, easy-to-read display, Day and night display modes, Calibration reminders

**Features:** Vision Pro support

**In-app purchases:** none


### Postmiles

[App page](https://appshunter.io/ios/app/postmiles/id6443652214)

This navigation app assists California highway workers in locating postmiles on the state's highway system. It offers map-based searching, precise location finding, street-level views, and integrated directions to specific markers or bridges.

**Highlights:** Locate postmiles on CA highway system, Pan and zoom map for quick searching, Search with 10th of a mile accuracy, Street-level view with Look Around, Get directions to postmile markers or bridges, Lookup coordinates in decimals and degrees

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pro Altimeter free?

Pro Altimeter costs $0.99, with no in-app purchases.

### Is Postmiles free?

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

### Which has better reviews, Pro Altimeter or Postmiles?

Postmiles is rated higher. Pro Altimeter averages 3.8 out of 5 from 39 ratings, while Postmiles averages 4.9 from 8 ratings.

### Do Pro Altimeter or Postmiles have ads?

Neither Pro Altimeter nor Postmiles shows ads.

### Which is updated more often, Pro Altimeter or Postmiles?

Pro Altimeter ships an update every 12 months, and Postmiles every 6 weeks. Most recently, Pro Altimeter was updated on September 26, 2026 and Postmiles on September 17, 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.*