# CHIEFMATE vs Compass Observation App

The clearest difference is in-app purchases: Compass Observation App at none against CHIEFMATE's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CHIEFMATE sells 2 in-app purchases, starting at $49.00 per month. Compass Observation App asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | CHIEFMATE | Compass Observation App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/compass-observation-app/id6817890581/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Size | 3 MB | 36 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STEM Maritime Systems LLC](https://appshunter.io/developer/6796434329) | [Burak Yesilirmak](https://appshunter.io/developer/6817890583) |

## What reviewers say

### CHIEFMATE

[App page](https://appshunter.io/ios/app/chiefmate-marine-navigation/id6796434327)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Watch Officer | $49.00 | per month |
| Master | $89.00 | per month |


### Compass Observation App

[App page](https://appshunter.io/ios/app/compass-observation-app/id6817890581)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CHIEFMATE free?

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

### Is Compass Observation App free?

Compass Observation App is free to download, with no in-app purchases.

### Do CHIEFMATE or Compass Observation App have ads?

Neither CHIEFMATE nor Compass Observation App shows ads.

### Which is updated more often, CHIEFMATE or Compass Observation App?

CHIEFMATE ships an update every 3 days, and Compass Observation App every 3 days. Most recently, CHIEFMATE was updated on October 31, 2026 and Compass Observation App on November 6, 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.*