# Optris calculator vs Wireless Measurement Device

The clearest difference is update cadence: Wireless Measurement Device at every 2 days against Optris calculator's every 2 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.

Optris calculator ships an update every 2 months, Wireless Measurement Device every 2 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Optris calculator | Wireless Measurement Device |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 31 MB | 27 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optris GmbH](https://appshunter.io/developer/1619077973) | [Terex Corporation](https://appshunter.io/developer/587341127) |

## What reviewers say

### Optris calculator

[App page](https://appshunter.io/ios/app/optris-calculator/id1619077971)

**In-app purchases:** none


### Wireless Measurement Device

[App page](https://appshunter.io/ios/app/wireless-measurement-device/id6782015144)

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

**In-app purchases:** none


## Frequently asked questions

### Is Optris calculator free?

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

### Is Wireless Measurement Device free?

Wireless Measurement Device is free to download, with no in-app purchases.

### Do Optris calculator or Wireless Measurement Device have ads?

Neither Optris calculator nor Wireless Measurement Device shows ads.

### Which is updated more often, Optris calculator or Wireless Measurement Device?

Optris calculator ships an update every 2 months, and Wireless Measurement Device every 2 days. Most recently, Optris calculator was updated on October 27, 2026 and Wireless Measurement Device on October 31, 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.*