Changers Fit vs TK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Changers Fit
This app facilitates team-building and health promotion for companies through engaging challenges. Employees can track activities like steps, running, and cycling, earning rewards and contributing to CSR projects.
- Versatile team challenges (steps, running, cycling, CO₂)
- Flexible activity tracking (GPS, Apple Health, Google Fit, Strava)
- Gamification elements (leaderboards, coins, awards)
- Integrated reward system with company offers
- CSR project integration (e.g., tree planting)
- Adaptable to company needs via SaaS platform
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Changers Fit App: Playful team challenges for companies The Changers Fit App enables companies to strengthen health promotion and team building through exciting team challenges. Whether counting steps, running, cycling, or reducing CO₂ – the app motivates employees to get active together and achieve their goals. Main features: Versatile team challenges: Individually customizable competitions in the areas of steps, running, cycling, and CO₂ reduction promote team spirit and raise awareness for health and climate protection. Flexible tracking: Participants can manually record their activities via GPS, connect with Apple Health or Google Fit, or use automatic tracking with MotionTag AI. Additionally, integration with apps like Strava and wearables like Fitbit or Garmin is possible. Gamification elements: Leaderboards, collecting coins, awards, and nudging mechanisms increase employee motivation. Daily goals, such as 10,000 steps, encourage a healthy lifestyle. Reward system: Collected coins can be exchanged for rewards. Companies have the option to provide their own offers, such as vouchers or material prizes, in the integrated marketplace. Integration of CSR projects: Companies can present social projects and support them through employee achievements. Automatic tree planting makes successes visible and fosters a sense of community. Adaptability: The Changers Fit App is flexible and can be adapted to the needs of any company without additional software development. Content and functions can be easily managed via the SaaS administration platform. Battery performance: The Changers App is particularly energy-efficient. However, power consumption is higher when the GPS function is enabled compared to normal smartphone usage. Data protection and security: The software is, of course, GDPR-compliant. Data is hosted in Germany. Additionally, Changers has incorporated the requirements of works councils and employee representatives from previous contracts with German corporations into software development. This includes anonymous participation without real names and company email addresses, as well as the ability for users to delete their accounts directly within the app.
TK
Achieve all-round wellbeing with personalized plans for fitness, nutrition, and relaxation. Set goals, track progress with self-tests, and receive motivating tips and recipe suggestions. Integrates with smartwatches for a holistic health overview.
- Personalized coaching plans
- Fitness exercises and audio coaching
- Extensive recipe database
- Meditation and mindfulness exercises
- Smartwatch and fitness tracker integration
- Progress tracking and self-tests
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Become fitter, move more, eat better or plan more time for relaxation – it’s not always easy to do it all, but the TK-Coach can help you find the right balance and achieve all-round wellbeing. In doing so, the TK-Coach focuses on your personal situation and your needs, as well as giving you motivating tips for staying on course and suitable nutrition suggestions. The TK-Coach will get you into top shape in the areas of fitness, diet and relaxation. It will help you to set specific goals and celebrate your successes – with simple recipes, sports exercises, guided meditations and lots more. Create your own plan to help increase your wellbeing week by week. Thanks to a smart suggestion logic, the app creates exactly the right coaching for you. Get started! Contents and features of the TK-Coach app • Self-tests to track your progress • A health profile that gives you an overview of your personal successes • Compatible with various smart watches and fitness trackers • Collect bonus points in the app for TK’s Bonus Plan. • Weekly and monthly reviews show your successes and give extra motivation • The app can be used in English too – provided the language setting of the device is set to English. • Download function to access content anytime Contents in the area of movement • Hip Hop Masterclass 1 • Audio coaching for running with targeted exercises and informational articles • Warm up and Cool down exercises • Circle training • Moving during your breaks • Pelvic training • Pilates • Back training • Yoga for beginners and advanced practitioners • 8-minutes workout • Connecting smartwatches and fitness trackers • Tasks to increase movement in everyday life Contents in the area of nutrition • Over 825 recipes • Specific goals for changing your diet • Questionnaire on your dietary habits • Nutrition Protocol: Receive personalised recommendations for your nutritional quality and specific calorie need • Health goal “Weight loss” for sustainable weight reduction Contents in the area of stress management • Interactive sleep podcast • Meditation and mindfulness exercises • Progressive muscle relaxation • Short breathing exercises • Short relaxation exercises • Antistress yoga • Mental health score: Using smart watches and fitness trackers, your individual mental strain can be measured. Security As a statutory health insurer, we are obliged to protect your health-related data as best as possible. The recorded data will not be passed on to TK, and entries are saved in an anonymised way. Further development We are continuously developing the app to include new functions. Your ideas and tips are the biggest help in this regard. Feel free to write to us directly via the following email address: technischer-support@tk.de. Prerequisites for access This free offer is available in unlimited form to all those insured with TK, who can obtain access to the free app via the password-protected area of the website, “My TK”. Those not insured with TK, but whose company is taking part in a TK promotional project can use the app free of charge for an unlimited period by way of a coupon code. Even if you are not insured with TK and do not have a coupon code, you can still avail yourself of the offer free of charge for four weeks by way of guest access. After four weeks, the app can only be used via the two ways mentioned above. Supported operating systems - iOS 16-18 Responsible party and operator Techniker Krankenkasse (TK)
Screenshots
Verdict
The clearest difference is review sentiment: TK at 52% against Changers Fit's 30%. TK also leads on rating (4.2 vs 3.9) and monetization model (free vs ad-supported). Changers Fit's advantage is update cadence (monthly vs every 2 months) and ratings volume (19 vs 6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
TK holds the better App Store score, 4.2 against 3.9. Both are backed by a comparable volume of ratings — 19 and 6 respectively. Written reviews point the same way: 30% of Changers Fit's written reviews are positive against 52% of TK's.
Changers Fit ships an update monthly, TK every 2 months. The most recent releases landed on September 6, 2026 and September 22, 2026 respectively.
| Parameter | Changers Fit | TK |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (19 ratings) | 4.2 (6 ratings) — better |
| Positive reviews | 29.6% of reviews | 51.9% of reviews — better |
| Number of ratings | 19 — better | 6 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 98 MB | 68 MB |
| Age rating | 12+ | 17+ |
| Developer | Changers | Techniker Krankenkasse (TK) |
Customer experience
Changers Fit
TK
In-app purchases
Changers Fit
No in-app purchases
TK
No in-app purchases









