# Interroll Product App vs FES.APP

The clearest difference is update cadence: FES.APP at monthly against Interroll Product App's every 3 months. Interroll Product App's advantage is iOS requirement (15.0 vs 26.0). 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.

Interroll Product App ships an update every 3 months, FES.APP monthly. Both last shipped on November 7, 2026.

## The numbers

| Metric | Interroll Product App | FES.APP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 35 MB | 4 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Interroll Software & Electronics GmbH](https://appshunter.io/developer/1575377048) | [Scherer und Schifano GmbH](https://appshunter.io/developer/1683178809) |

## What reviewers say

### Interroll Product App

[App page](https://appshunter.io/ios/app/interroll-product-app/id1618761516)

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

**In-app purchases:** none


### FES.APP

[App page](https://appshunter.io/ios/app/fesapp/id6447986188)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interroll Product App free?

Interroll Product App is free to download, with no in-app purchases.

### Is FES.APP free?

FES.APP is free to download, with no in-app purchases.

### Do Interroll Product App or FES.APP have ads?

Neither Interroll Product App nor FES.APP shows ads.

### Which is updated more often, Interroll Product App or FES.APP?

Interroll Product App ships an update every 3 months, and FES.APP monthly. Most recently, Interroll Product App was updated on November 7, 2026 and FES.APP on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*