# TK vs WOF

The clearest difference is review sentiment: WOF at 94% against TK's 72%. WOF also leads on device support (3 vs 1) and iOS requirement (15.5 vs 18.0). TK's advantage is monetization model (free vs ad-supported) and update cadence (every 2 weeks vs every 5 weeks). On price, 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.

TK ships an update every 2 weeks, WOF every 5 weeks. The most recent releases landed on September 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | TK | WOF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.2K ratings)](https://appshunter.io/ios/app/tk-app/id1163694230/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 72.4% of reviews | **93.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | **Free** | Ad-supported |
| Size | 538 MB | 82 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Techniker Krankenkasse (TK)](https://appshunter.io/developer/355493231) | [Corpora Fitness GmbH& Co.KG](https://appshunter.io/developer/573467286) |

## What reviewers say

### TK

[App page](https://appshunter.io/ios/app/tk-app/id1163694230)

Manage your health insurance digitally. Upload receipts, view sick notes, and track fitness for bonus points. Securely communicate with your provider and access your health data.

**Highlights:** Digital receipt uploads, View sick notes, Secure messaging with provider, Digital bonus program, Fitness tracking via Apple Health/Fitbit, Access to health data (TK-Safe)

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent app for English speakers
- 🚀 Excellent customer service
- 👍 Easy to use and intuitive
- 👍 Comprehensive features
- 👍 Smooth and fast

**What reviewers complain about**

- 🐛 Compatibility issues with older devices
- 🐛 Synchronization problems with Apple Health
- 🐛 Login and activation issues after updates
- 🐛 Buggy submission of sick notes
- 🐛 Incomplete English translations

**Reported bugs**

- Login issues after updates
- Incompatibility with older devices
- Synchronization problems with Apple Health
- Errors when submitting sick notes
- Incomplete English translations

**Requested features**

- English language support for all features
- Integration with more fitness tracking apps
- Larger QR code display in wallet for easier scanning
- Ability to view and manage bonus program details
- Improved data synchronization and real-time updates


### WOF

[App page](https://appshunter.io/ios/app/wof/id1570425972)

Create custom workout plans, access professional exercise videos, and track your training progress. Engage with a community of athletes, stay updated on offers, and participate in live classes.

**Highlights:** Custom workout creation, Professional exercise videos, Training progress tracking, Live class participation, Training diary, Community connection

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

**In-app purchases:** none


## Frequently asked questions

### Is TK free?

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

### Is WOF free?

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

### Do TK or WOF have ads?

Neither TK nor WOF shows ads.

### Which is updated more often, TK or WOF?

TK ships an update every 2 weeks, and WOF every 5 weeks. Most recently, TK was updated on September 28, 2026 and WOF on September 20, 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.*