# Sensor Toolkit vs AltiLog

The clearest difference is in-app purchases: AltiLog at none against Sensor Toolkit's 4. Sensor Toolkit's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence and ads there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sensor Toolkit | AltiLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 54 MB | 4 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Dylan Calin](https://appshunter.io/developer/1832226530) | [Kai Hoeher](https://appshunter.io/developer/693968628) |

## 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 |


### AltiLog

[App page](https://appshunter.io/ios/app/altilog-barometer-and-altitude/id6790169662)

**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 AltiLog free?

AltiLog is free to download, with no in-app purchases.

### Do Sensor Toolkit or AltiLog have ads?

Both Sensor Toolkit and AltiLog show ads.

### Which is updated more often, Sensor Toolkit or AltiLog?

Sensor Toolkit ships an update every 3 weeks, and AltiLog every 3 weeks. Most recently, Sensor Toolkit was updated on November 5, 2026 and AltiLog on October 31, 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.*