# Altimeter & Barometer vs Compass Maps

The clearest difference is in-app purchases: Altimeter & Barometer at none against Compass Maps's 2. Compass Maps's advantage is ads (none vs shown) and update cadence (every 4 weeks vs every 13 months). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. Compass Maps sells 2 in-app purchases, starting at $7.99 per year. Altimeter & Barometer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Altimeter & Barometer against 4.6 for Compass Maps. Both are backed by a comparable volume of ratings — 154 and 666 respectively. Written reviews are what separate them: 55% of Altimeter & Barometer's written reviews are positive against 56% of Compass Maps's.

Altimeter & Barometer ships an update every 13 months, Compass Maps every 4 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Altimeter & Barometer | Compass Maps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (154 ratings)](https://appshunter.io/ios/app/altimeter-and-barometer/id541514339/reviews) | **[4.6 (666 ratings)](https://appshunter.io/ios/app/compass-maps-digital-compass/id6451059416/reviews)** |
| Number of ratings | 154 | **666** |
| Positive reviews | 54.5% of reviews | **55.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 13 months | **Every 4 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 11 MB | 25 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [KIET NGUYEN TAN](https://appshunter.io/developer/1696408238) |

## What reviewers say

### Altimeter & Barometer

[App page](https://appshunter.io/ios/app/altimeter-and-barometer/id541514339)

This app provides real-time altitude and atmospheric pressure readings. It uses GPS for location and sea level measurements, with a conversion tool for meters to feet. For compatible devices, it also offers barometric pressure sensing.

**Highlights:** GPS altitude measurement, Sea level display in meters, Meter to feet conversion calculator, Barometric pressure sensor (iPhone 6+), Map of current position

**Features:** Vision Pro support

**In-app purchases:** none


### Compass Maps

[App page](https://appshunter.io/ios/app/compass-maps-digital-compass/id6451059416)

Navigate with a digital compass that displays direction on a map. Features include real-time traffic, land area measurement, and location sharing. It utilizes GPS for auto-direction and allows map interaction.

**Highlights:** Digital compass on map, Real-time traffic maps, Land area measurement, Location sharing, GPS auto-direction, Satellite map mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Yearly) | $7.99 | per year |
| Remove Ads – Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is Altimeter & Barometer free?

Altimeter & Barometer is free to download, with no in-app purchases.

### Is Compass Maps free?

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

### Which has better reviews, Altimeter & Barometer or Compass Maps?

Compass Maps is rated higher. Altimeter & Barometer averages 4.6 out of 5 from 154 ratings, while Compass Maps averages 4.6 from 666 ratings.

### Do Altimeter & Barometer or Compass Maps have ads?

Altimeter & Barometer shows ads; Compass Maps does not.

### Which is updated more often, Altimeter & Barometer or Compass Maps?

Altimeter & Barometer ships an update every 13 months, and Compass Maps every 4 weeks. Most recently, Altimeter & Barometer was updated on October 21, 2026 and Compass Maps on October 25, 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.*