# OPTICHECK Flow Mobile vs PayPerPoop

The clearest difference is in-app purchases: OPTICHECK Flow Mobile at none against PayPerPoop's 1. OPTICHECK Flow Mobile also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. PayPerPoop sells 1 one-off in-app purchase. OPTICHECK Flow Mobile asks for nothing beyond the download.

OPTICHECK Flow Mobile ships an update every 3 months, PayPerPoop every 2 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | OPTICHECK Flow Mobile | PayPerPoop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/opticheck-flow-mobile/id1476806101/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 361 MB | 22 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) | [ALEK AKSLAND PEREZ](https://appshunter.io/developer/1802553497) |

## What reviewers say

### OPTICHECK Flow Mobile

[App page](https://appshunter.io/ios/app/opticheck-flow-mobile/id1476806101)

This utility app facilitates the wireless setup, verification, and ongoing monitoring of specific KROHNE flow meters. It enables secure Bluetooth® connectivity for device configuration and performance checks without interrupting ongoing measurements.

**Highlights:** Wireless device commissioning, Device parameterization via Bluetooth®, Verification without measurement interruption, Monitoring of meter performance, Monitoring of application parameters

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

**In-app purchases:** none


### PayPerPoop

[App page](https://appshunter.io/ios/app/payperpoop/id6743385373)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |


## Frequently asked questions

### Is OPTICHECK Flow Mobile free?

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

### Is PayPerPoop free?

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

### Do OPTICHECK Flow Mobile or PayPerPoop have ads?

PayPerPoop shows ads; OPTICHECK Flow Mobile does not.

### Which is updated more often, OPTICHECK Flow Mobile or PayPerPoop?

OPTICHECK Flow Mobile ships an update every 3 months, and PayPerPoop every 2 months. Most recently, OPTICHECK Flow Mobile was updated on October 13, 2026 and PayPerPoop on October 10, 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.*