# Uni Mainz vs GESIS SMART

The clearest difference is review sentiment: GESIS SMART at 50% against Uni Mainz's 15%. Uni Mainz's advantage is device support (3 vs 1) and iOS requirement (14.2 vs 16.0). 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.

Uni Mainz ships an update every 3 months, GESIS SMART every 2 months. The most recent releases landed on October 12, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Uni Mainz | GESIS SMART |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 15.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 75 MB | 28 MB |
| Requires iOS | **14.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Gutenberg-Universität Mainz](https://appshunter.io/developer/877501807) | [GESIS - Leibniz Institute for the Social Sciences](https://appshunter.io/developer/1735286430) |

## What reviewers say

### Uni Mainz

[App page](https://appshunter.io/ios/app/uni-mainz/id1410793308)

This app provides students and employees of Johannes Gutenberg University Mainz with essential information and quick access to campus services. It includes features like dining hall menus, class schedules, event listings, and a campus map.

**Highlights:** Mensa menu plans, Semester timetable, Campus event overview, Interactive campus map, Employee contact search, Library information and hours

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

**In-app purchases:** none


### GESIS SMART

[App page](https://appshunter.io/ios/app/gesis-smart/id6479244351)

Participate in academic research by completing surveys and questionnaires directly within the app. Track your progress and compensation for contributing to studies. Requires an access code to join specific research projects.

**Highlights:** Complete questionnaires in-app, Track study progress, View compensation details, Receive push notifications for new surveys, Secure and pseudonymized data storage, Control data sharing permissions

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

**In-app purchases:** none


## Frequently asked questions

### Is Uni Mainz free?

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

### Is GESIS SMART free?

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

### Do Uni Mainz or GESIS SMART have ads?

Neither Uni Mainz nor GESIS SMART shows ads.

### Which is updated more often, Uni Mainz or GESIS SMART?

Uni Mainz ships an update every 3 months, and GESIS SMART every 2 months. Most recently, Uni Mainz was updated on October 12, 2026 and GESIS SMART on October 17, 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.*