# CorrectAltitude vs Compass Altimeter

The clearest difference is review sentiment: Compass Altimeter at 80% against CorrectAltitude's 0%. Compass Altimeter also leads on price (Free vs $0.99) and update cadence (every 3 weeks vs every 8 months). CorrectAltitude's advantage is in-app purchases (none vs 3) and iOS requirement (13.1 vs 15.0). On ads and device support there is nothing between them.

Compass Altimeter is free to download; CorrectAltitude costs $0.99 up front. Compass Altimeter sells 3 in-app purchases, starting at $1.99 per month. CorrectAltitude asks for nothing beyond the download.

CorrectAltitude ships an update every 8 months, Compass Altimeter every 3 weeks. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CorrectAltitude | Compass Altimeter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/compass-altimeter-sun-and-moon/id6752685064/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 3 MB | 38 MB |
| Requires iOS | **13.1** | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [koji otani](https://appshunter.io/developer/503754671) | [Fuzhou Knock Dream Technology Co., Ltd.](https://appshunter.io/developer/1478601598) |

## What reviewers say

### CorrectAltitude

[App page](https://appshunter.io/ios/app/correctaltitude/id595948623)

Accurately determine your altitude using data from multiple GPS satellites. Capture photos with altitude and date stamps, and optionally display your named location for emergency use. Ideal for outdoor activities where precise elevation is crucial.

**Highlights:** Precise altitude determination, Altitude and date-stamped photos, Location display for emergencies, Continuous GPS triangulation, Adjustable accuracy range, Notify mode for altitude updates

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

**In-app purchases:** none


### Compass Altimeter

[App page](https://appshunter.io/ios/app/compass-altimeter-sun-and-moon/id6752685064)

This pro-grade tool provides accurate live altitude and compass readings by fusing GPS with device sensors. It also offers sun and moon tracking, golden hour timing, and coordinate display, making it ideal for outdoor activities and photography.

**Highlights:** Live altitude with GPS and barometer fusion, Relative altitude tracking for ascent/descent, True/Magnetic North compass with haptics, Sun and moon elevation, azimuth, rise/set times, Golden/blue hour timing for photography, Coordinate display with one-tap copy, Pressure readings in various units

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compass Altimeter Pro Monthly | $1.99 | per month |
| Compass Altimeter Pro Annual | $9.99 | per year |
| Compass Altimeter Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is CorrectAltitude free?

CorrectAltitude costs $0.99, with no in-app purchases.

### Is Compass Altimeter free?

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

### Do CorrectAltitude or Compass Altimeter have ads?

Neither CorrectAltitude nor Compass Altimeter shows ads.

### Which is updated more often, CorrectAltitude or Compass Altimeter?

CorrectAltitude ships an update every 8 months, and Compass Altimeter every 3 weeks. Most recently, CorrectAltitude was updated on November 1, 2026 and Compass Altimeter on October 28, 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.*