# True vs Compass Observation App

The clearest difference is in-app purchases: Compass Observation App at none against True's 1. Compass Observation App also leads on update cadence (every 3 days vs every 41 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. True sells 1 one-off in-app purchase. Compass Observation App asks for nothing beyond the download.

True ships an update every 41 months, Compass Observation App every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | True | Compass Observation App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 1 MB | 36 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nejc Landeker](https://appshunter.io/developer/712909616) | [Burak Yesilirmak](https://appshunter.io/developer/6817890583) |

## What reviewers say

### True

[App page](https://appshunter.io/ios/app/true-wind-calculator/id712909613)

Calculate true wind direction and speed for sailing. Input vessel speed, apparent wind, and angle to determine accurate wind data.

**Highlights:** True-wind calculation, Vessel speed input, Apparent wind speed input, Apparent wind angle input, Vessel heading input

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $4.99 | one-time |


### 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 True free?

True 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 True or Compass Observation App have ads?

Neither True nor Compass Observation App shows ads.

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

True ships an update every 41 months, and Compass Observation App every 3 days. Most recently, True was updated on October 25, 2026 and Compass Observation App on October 24, 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.*