# Altimeter X. vs Sensor Toolkit

The clearest difference is ads: Altimeter X. at none against Sensor Toolkit's shown. Altimeter X. also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (13.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Altimeter X. sells 1 one-off in-app purchase and Sensor Toolkit sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Altimeter X. ships an update every 5 days, Sensor Toolkit every 3 weeks. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Altimeter X. | Sensor Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 49 MB | 54 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Hubert Willy Lehmann](https://appshunter.io/developer/1684815110) | [Dylan Calin](https://appshunter.io/developer/1832226530) |

## What reviewers say

### Altimeter X.

[App page](https://appshunter.io/ios/app/altimeter-x/id6708236560)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### 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 |


## Frequently asked questions

### Is Altimeter X. free?

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

### Is Sensor Toolkit free?

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

### Do Altimeter X. or Sensor Toolkit have ads?

Sensor Toolkit shows ads; Altimeter X. does not.

### Which is updated more often, Altimeter X. or Sensor Toolkit?

Altimeter X. ships an update every 5 days, and Sensor Toolkit every 3 weeks. Most recently, Altimeter X. was updated on October 11, 2026 and Sensor Toolkit on September 30, 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.*