# Sensor Technology Engineering vs RADOM

The clearest difference is iOS requirement: Sensor Technology Engineering at 13.0 against RADOM's 15.5. On price, update cadence, ads and in-app purchases 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, RADOM every 8 months. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Sensor Technology Engineering | RADOM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 8 months |
| Size | 94 MB | 3 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sensor Technology Engineering](https://appshunter.io/developer/1668239053) | [JS TECHWIN Co., Ltd.](https://appshunter.io/developer/1641211285) |

## 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


### RADOM

[App page](https://appshunter.io/ios/app/radom/id1641211283)

**Features:** macOS Compatibility

**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 RADOM free?

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

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

Neither Sensor Technology Engineering nor RADOM shows ads.

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

Sensor Technology Engineering ships an update every 7 months, and RADOM every 8 months. Most recently, Sensor Technology Engineering was updated on September 15, 2026 and RADOM on September 17, 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.*