# OPTICHECK Temperature Mobile vs SICK Smart Assistant

The clearest difference is iOS requirement: OPTICHECK Temperature Mobile at 9.0 against SICK Smart Assistant's 13.0. 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.

OPTICHECK Temperature Mobile ships an update every 4 months, SICK Smart Assistant every 6 months. The most recent releases landed on May 19, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | OPTICHECK Temperature Mobile | SICK Smart Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Size | 59 MB | 214 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) | [SICK AG](https://appshunter.io/developer/988403777) |

## What reviewers say

### OPTICHECK Temperature Mobile

[App page](https://appshunter.io/ios/app/opticheck-temperature-mobile/id1485401520)

**Features:** macOS Compatibility

**In-app purchases:** none


### SICK Smart Assistant

[App page](https://appshunter.io/ios/app/sick-smart-assistant/id1524423177)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPTICHECK Temperature Mobile free?

OPTICHECK Temperature Mobile is free to download, with no in-app purchases.

### Is SICK Smart Assistant free?

SICK Smart Assistant is free to download, with no in-app purchases.

### Do OPTICHECK Temperature Mobile or SICK Smart Assistant have ads?

Neither OPTICHECK Temperature Mobile nor SICK Smart Assistant shows ads.

### Which is updated more often, OPTICHECK Temperature Mobile or SICK Smart Assistant?

OPTICHECK Temperature Mobile ships an update every 4 months, and SICK Smart Assistant every 6 months. Most recently, OPTICHECK Temperature Mobile was updated on May 19, 2026 and SICK Smart Assistant on May 16, 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.*