# OPTUM.PimosMobil vs Arc+

The clearest difference is in-app purchases: OPTUM.PimosMobil at none against Arc+'s 1. OPTUM.PimosMobil also leads on update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Arc+ sells 1 one-off in-app purchase. OPTUM.PimosMobil asks for nothing beyond the download.

OPTUM.PimosMobil ships an update every 3 weeks, Arc+ every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | OPTUM.PimosMobil | Arc+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (118 ratings)](https://appshunter.io/ios/app/arc-plus/id1464058503/reviews)** |
| Number of ratings | — | **118** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | — | Free |
| Size | 64 MB | 4 MB |
| Requires iOS | **15.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OPTUM Systemtechnik GmbH](https://appshunter.io/developer/1452536246) | [Mohamed Saad](https://appshunter.io/developer/1291109619) |

## What reviewers say

### OPTUM.PimosMobil

[App page](https://appshunter.io/ios/app/optumpimosmobil/id1452536247)

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

**In-app purchases:** none


### Arc+

[App page](https://appshunter.io/ios/app/arc-plus/id1464058503)

This utility app helps users calculate various dimensions of circular arcs, including radius, length, width, and height. It offers a simple interface where users input two known values to derive the rest. Additional features include a unit converter, result saving, and sharing capabilities.

**Highlights:** Calculate Radius, Length, Width, Height, Tangent, Input two known values to find others, Measurement units converter, Save results to favorites, Share calculations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Blocker | $4.99 | one-time |


## Frequently asked questions

### Is OPTUM.PimosMobil free?

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

### Is Arc+ free?

Arc+ is free to download, with in-app purchases available.

### Do OPTUM.PimosMobil or Arc+ have ads?

Neither OPTUM.PimosMobil nor Arc+ shows ads.

### Which is updated more often, OPTUM.PimosMobil or Arc+?

OPTUM.PimosMobil ships an update every 3 weeks, and Arc+ every 4 months. Most recently, OPTUM.PimosMobil was updated on October 24, 2026 and Arc+ on October 24, 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.*