# Precision Calc Pro vs Compass

The clearest difference is in-app purchases: Precision Calc Pro at none against Compass's 3. Precision Calc Pro also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Compass sells 3 in-app purchases, starting at $7.99 per 7 days. Precision Calc Pro asks for nothing beyond the download.

## The numbers

| Metric | Precision Calc Pro | Compass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Size | 2 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [杭州矩路科技有限公司](https://appshunter.io/developer/1465038873) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Precision Calc Pro

[App page](https://appshunter.io/ios/app/precision-calc-pro/id6759849503)

**Features:** macOS Compatibility

**In-app purchases:** none


### Compass

[App page](https://appshunter.io/ios/app/compass-true-north-finder/id6772265033)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Waypoints & Trails Weekly | $7.99 | per 7 days |
| Orienteering Kit Yearly | $39.99 | per year |
| Sun Tracker: Pay Once | $79.99 | one-time |


## Frequently asked questions

### Is Precision Calc Pro free?

Precision Calc Pro is free to download, with no in-app purchases.

### Is Compass free?

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

### Do Precision Calc Pro or Compass have ads?

Neither Precision Calc Pro nor Compass shows ads.

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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.*