# Altimeter for Aviators vs NavX

The clearest difference is in-app purchases: NavX at none against Altimeter for Aviators's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Altimeter for Aviators sells 2 one-off in-app purchases. NavX asks for nothing beyond the download.

Altimeter for Aviators ships an update every 5 weeks, NavX every 2 months. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Altimeter for Aviators | NavX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (582 ratings)](https://appshunter.io/ios/app/altimeter-for-aviators/id1463100680/reviews)** | — |
| Number of ratings | **582** | — |
| Positive reviews | 75.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 51 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [STEARsoft](https://appshunter.io/developer/373730382) | [SwissNavX](https://appshunter.io/developer/1808928969) |

## What reviewers say

### Altimeter for Aviators

[App page](https://appshunter.io/ios/app/altimeter-for-aviators/id1463100680)

This app functions as a pressure altimeter, similar to those found in aircraft, utilizing your device's barometer. It's designed for pilots and aviation enthusiasts to understand altitude, height above a location, and flight levels. It works as a standalone Apple Watch app or on iPhones/iPads with a barometer.

**Highlights:** Pressure altimeter functionality, Standalone Apple Watch app, Calculates altitude above sea level, Calculates height above a specific location (QFE), Calculates Flight Level (FL) using standard pressure, Supports pressure units (inHg, hPa, mb)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VSI | $1.99 | one-time |
| Altitude Units | $1.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive user interface
- ✈️ Accurate altimeter representation for pilots
- ⌚ Works well on Apple Watch
- 🎯 Easy pressure setting adjustment like real cockpit
- 📱 No GPS required for operation

**What reviewers complain about**

- 🐛 App crashes or stops working after iOS updates
- 📵 Inconsistent performance across Watch models
- 🔴 Watch display shows red/no reading on some devices
- 📧 Poor developer communication and contact options
- 💰 Upsell prompts not clearly disclosed

**Reported bugs**

- App hangs on 'reading pressure' with Apple Watch 8
- Watch complication shows dashed line instead of altitude
- Incompatibility with iOS 17.4
- Watch app graphics fuzzy/wrong resolution
- Crown and long press unresponsive on Watch 8

**Requested features**

- CarPlay integration and widget support
- Night mode with dark theme
- Keep screen on while flying option
- Drum pointer altimeter display option
- Digital altitude readout option


### NavX

[App page](https://appshunter.io/ios/app/navx/id6744692608)

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

**In-app purchases:** none


## Frequently asked questions

### Is Altimeter for Aviators free?

Altimeter for Aviators is free to download, with in-app purchases available.

### Is NavX free?

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

### Do Altimeter for Aviators or NavX have ads?

Neither Altimeter for Aviators nor NavX shows ads.

### Which is updated more often, Altimeter for Aviators or NavX?

Altimeter for Aviators ships an update every 5 weeks, and NavX every 2 months. Most recently, Altimeter for Aviators was updated on October 21, 2026 and NavX on October 13, 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.*