ZNTH Training vs Built By Karl
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ZNTH Training
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ZNTH aims to be a platform that incorporates the knowledge of human movement into the rehabilitation of sporting-based injuries and enhancing athletic performance. Combining evidence-based recommendations derived from research with biomechanical principles, we give you the necessary tools to propel your own training to greater lengths. This application is to access member workouts, diet plans and rehabilitation programs * App access requires paid coaching plan Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy
Built By Karl
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Built By Karl is a fitness and lifestyle coaching app designed to help busy men build strength, lose body fat, and create sustainable habits alongside work and family life. The app provides structured training programs, simple nutrition guidance, and daily accountability tools to support long-term consistency. Users can follow workouts tailored to their goals, track progress over time, and stay organised with habit tracking and check-ins. Key features include: Personalised workout plans with exercise demonstrations Progress tracking for workouts, body metrics, and habits Nutrition guidance and food tracking support In-app messaging for communication and feedback Goal setting and reminders to support consistency Built By Karl focuses on practical routines that fit around real life, helping users stay consistent without extreme diets or complicated systems. Everything is delivered in one place to make fitness simple, structured, and manageable. *App access requires a paid coaching plan. Terms Of Use: https://kahunas.io/terms-conditions Privacy Policy: https://kahunas.io/privacy Medical Disclaimer: This app does not provide medical advice, diagnoses, or treatment. The information and guidance provided within the app are for general fitness and wellbeing purposes only. Always seek the advice of your physician or other qualified healthcare provider before starting any exercise program, changing your nutrition, or making decisions regarding your health.
Screenshots
Verdict
The clearest difference is update cadence: ZNTH Training at every 3 weeks against Built By Karl's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. ZNTH Training sells 1 in-app purchase, starting at $99.99 per month and Built By Karl sells 1 in-app purchase, starting at $299.99 per month. Whichever you choose, the download price is not the number that matters.
ZNTH Training ships an update every 3 weeks, Built By Karl every 3 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | ZNTH Training | Built By Karl |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details โ not scored | ||
| Size | 47 MB | 56 MB |
| Age rating | 17+ | 17+ |
| Developer | Harry Pham | Karl Jardine |
In-app purchases
ZNTH Training
- Monthly$99.991 Month
Built By Karl
- Monthly 1-1$299.991 Month
Questions
Is ZNTH Training free?
Is Built By Karl free?
Do ZNTH Training or Built By Karl have ads?
Which is updated more often, ZNTH Training or Built By Karl?
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