# Sensor Technology Engineering vs DOE Triage

The clearest difference is update cadence: DOE Triage at every 5 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, DOE Triage every 5 weeks. The most recent releases landed on September 15, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Sensor Technology Engineering | DOE Triage |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Size | 94 MB | 105 MB |
| Requires iOS | 13.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sensor Technology Engineering](https://appshunter.io/developer/1668239053) | [William Edwards](https://appshunter.io/developer/1595992618) |

## 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


### DOE Triage

[App page](https://appshunter.io/ios/app/doe-triage/id6742207366)

**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 DOE Triage free?

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

### Do Sensor Technology Engineering or DOE Triage have ads?

Neither Sensor Technology Engineering nor DOE Triage shows ads.

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

Sensor Technology Engineering ships an update every 7 months, and DOE Triage every 5 weeks. Most recently, Sensor Technology Engineering was updated on September 15, 2026 and DOE Triage on September 22, 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.*