# Sensor Toolkit vs Offline Compass Altimeter

The clearest difference is in-app purchases: Offline Compass Altimeter at none against Sensor Toolkit's 4. Offline Compass Altimeter also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sensor Toolkit sells 4 one-off in-app purchases. Offline Compass Altimeter asks for nothing beyond the download.

## The numbers

| Metric | Sensor Toolkit | Offline Compass Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Size | 54 MB | 4 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Dylan Calin](https://appshunter.io/developer/1832226530) | [栋梁 刘](https://appshunter.io/developer/1888110676) |

## What reviewers say

### Sensor Toolkit

[App page](https://appshunter.io/ios/app/sensor-toolkit-smart-tools/id6758297155)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Tip | $1.00 | one-time |
| SensorKit Pro | $1.99 | one-time |
| Pizza Tip | $2.00 | one-time |
| Diamond Tip | $5.00 | one-time |


### Offline Compass Altimeter

[App page](https://appshunter.io/ios/app/offline-compass-altimeter/id6762721848)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Toolkit free?

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

### Is Offline Compass Altimeter free?

Offline Compass Altimeter is free to download, with no in-app purchases.

### Do Sensor Toolkit or Offline Compass Altimeter have ads?

Sensor Toolkit shows ads; Offline Compass Altimeter does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*