# Trendfrage vs RevierBuch

The clearest difference is ads: RevierBuch at none against Trendfrage's shown. RevierBuch also leads on update cadence (every 2 months vs every 4 months) and iOS requirement (14.0 vs 16.0). On price, 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.

Trendfrage ships an update every 4 months, RevierBuch every 2 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Trendfrage | RevierBuch |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 31 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [TREND RESEARCH Gesellschaft fuer Markt- und Kommunikationsforschung mbH](https://appshunter.io/developer/923004218) | [Eduard Horvath](https://appshunter.io/developer/1130879696) |

## What reviewers say

### Trendfrage

[App page](https://appshunter.io/ios/app/trendfrage/id923004219)

Participate in surveys on the go and earn rewards. This platform allows users to share their opinions and contribute to market research. Registration is available within the app or on the website.

**Highlights:** Participate in surveys, Earn rewards, Mobile access, User registration, Share opinions

**Features:** macOS Compatibility

**In-app purchases:** none


### RevierBuch

[App page](https://appshunter.io/ios/app/revierbuch/id1564722942)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trendfrage free?

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

### Is RevierBuch free?

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

### Do Trendfrage or RevierBuch have ads?

Trendfrage shows ads; RevierBuch does not.

### Which is updated more often, Trendfrage or RevierBuch?

Trendfrage ships an update every 4 months, and RevierBuch every 2 months. Most recently, Trendfrage was updated on November 1, 2026 and RevierBuch on November 7, 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.*