# RadHalo vs Sensor Technology Engineering

The clearest difference is update cadence: Sensor Technology Engineering at every 7 months against RadHalo's every 48 months. RadHalo's advantage is iOS requirement (11.0 vs 13.0). 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.

RadHalo ships an update every 48 months, Sensor Technology Engineering every 7 months. The most recent releases landed on September 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | RadHalo | Sensor Technology Engineering |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 7 months** |
| Size | 14 MB | 94 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thermo Fisher Scientific](https://appshunter.io/developer/407517076) | [Sensor Technology Engineering](https://appshunter.io/developer/1668239053) |

## What reviewers say

### RadHalo

[App page](https://appshunter.io/ios/app/radhalo/id1012511932)

**In-app purchases:** none


### Sensor Technology Engineering

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

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

**In-app purchases:** none


## Frequently asked questions

### Is RadHalo free?

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

### Is Sensor Technology Engineering free?

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

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

Neither RadHalo nor Sensor Technology Engineering shows ads.

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

RadHalo ships an update every 48 months, and Sensor Technology Engineering every 7 months. Most recently, RadHalo was updated on September 12, 2026 and Sensor Technology Engineering on October 2, 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.*