# OPTICHECK Level Mobile vs Shield.Bike

The clearest difference is iOS requirement: OPTICHECK Level Mobile at 11.0 against Shield.Bike'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.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | OPTICHECK Level Mobile | Shield.Bike |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 242 MB | 60 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) | [Sebastian Reszpondek](https://appshunter.io/developer/1692145241) |

## What reviewers say

### OPTICHECK Level Mobile

[App page](https://appshunter.io/ios/app/opticheck-level-mobile/id1596750666)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shield.Bike

[App page](https://appshunter.io/ios/app/shieldbike/id6450171813)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPTICHECK Level Mobile free?

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

### Is Shield.Bike free?

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

### Do OPTICHECK Level Mobile or Shield.Bike have ads?

Neither OPTICHECK Level Mobile nor Shield.Bike shows ads.

### Which is updated more often, OPTICHECK Level Mobile or Shield.Bike?

OPTICHECK Level Mobile ships an update every 3 months, and Shield.Bike every 3 months. Most recently, OPTICHECK Level Mobile was updated on October 4, 2026 and Shield.Bike on October 8, 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.*