# Sensor Technology Engineering vs PAAT

The clearest difference is update cadence: PAAT at every 3 weeks against Sensor Technology Engineering's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sensor Technology Engineering ships an update every 7 months, PAAT every 3 weeks. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sensor Technology Engineering | PAAT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 94 MB | 11 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sensor Technology Engineering](https://appshunter.io/developer/1668239053) | [IAEA](https://appshunter.io/developer/535500126) |

## What reviewers say

### Sensor Technology Engineering

[App page](https://appshunter.io/ios/app/sensor-technology-engineering/id1627959712)

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

**In-app purchases:** none


### PAAT

[App page](https://appshunter.io/ios/app/paat-iaea/id6470376172)

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Technology Engineering free?

Sensor Technology Engineering is free to download, with no in-app purchases.

### Is PAAT free?

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

### Do Sensor Technology Engineering or PAAT have ads?

Neither Sensor Technology Engineering nor PAAT shows ads.

### Which is updated more often, Sensor Technology Engineering or PAAT?

Sensor Technology Engineering ships an update every 7 months, and PAAT every 3 weeks. Most recently, Sensor Technology Engineering was updated on October 2, 2026 and PAAT on October 11, 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.*