# gym4us vs IKK BB App

The clearest difference is update cadence: gym4us at every 3 weeks against IKK BB App's every 4 months. IKK BB App's advantage is iOS requirement (14.0 vs 16.4). 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.

gym4us ships an update every 3 weeks, IKK BB App every 4 months. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | gym4us | IKK BB App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 18.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | — | Free |
| Size | 157 MB | 119 MB |
| Requires iOS | 16.4 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [DHZ Fitness Europe GmbH](https://appshunter.io/developer/1438534327) | [IKK Brandenburg und Berlin](https://appshunter.io/developer/1509227021) |

## What reviewers say

### gym4us

[App page](https://appshunter.io/ios/app/gym4us/id1475889257)

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

**In-app purchases:** none


### IKK BB App

[App page](https://appshunter.io/ios/app/ikk-bb-app/id1509227022)

Manage your health insurance needs conveniently from home or on the go. Submit sick notes, upload documents, and contact customer service directly through the app. Secure data transfer with two-way authentication ensures your information is protected.

**Highlights:** Submit sick notes, Upload documents, Contact customer service, Secure data transfer, Two-way authentication

**In-app purchases:** none


## Frequently asked questions

### Is gym4us free?

gym4us is free to download, with no in-app purchases.

### Is IKK BB App free?

IKK BB App is free to download, with no in-app purchases.

### Do gym4us or IKK BB App have ads?

Neither gym4us nor IKK BB App shows ads.

### Which is updated more often, gym4us or IKK BB App?

gym4us ships an update every 3 weeks, and IKK BB App every 4 months. Most recently, gym4us was updated on October 1, 2026 and IKK BB App on October 2, 2026.

---

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