Coach Kelly vs 4TRAINER
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Coach Kelly
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One on one professional & specialized coaching available at your fingertips! Focused training programs & tailored meal plans, workout & meal tracking, weekly progress and wellness check ins, Coach Kelly is there for you every step of the way to ensure you get results and feel your best! *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.
4TRAINER
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I built 4TRAINER because my PT business was running on a calendar, a spreadsheet and a lot of WhatsApps. Now it runs on this. My clients have their own app too, so they can see their sessions and workouts without having to ask me. Schedule Book a client once and set it to repeat every week. Block out the hours you don't work, and sync your sessions to Google Calendar. Clients can book a session, pause for a holiday or ask for a new time from their app. Nothing changes in your diary until you say yes. Deliver Open today's session and log sets as they happen. The number pad is big enough to use mid-set, and it saves after every one, so a flat battery won't cost you a workout. Supersets, timed sets and cardio are all in there. Finish the workout and the session is marked done. Build templates from the exercise library, and give clients solo workouts to do on their own. Collect Invoice a package and its sessions are set aside for that client. They unlock as the client pays. When the sessions run out, the client can't book more until you've invoiced again. Analytics shows what you've earned, what you're owed and how many sessions you've delivered. Tap any number to see the sessions and invoices behind it. Your clients' app Clients see their next session, how many sessions they have left and their invoices. Every workout you log with them is there, with 12 weeks of history and a progress chart for each lift. Expect fewer "how many sessions do I have left?" messages. 4TRAINER is free for trainers and their clients. Made in Cape Town. Terms of use: https://4trainer.io/terms Privacy policy: https://4trainer.io/privacy
Screenshots
Verdict
Coach Kelly and 4TRAINER are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Coach Kelly sells 1 in-app purchase, starting at $99.99 per month and 4TRAINER sells 4 in-app purchases, starting at $49.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Coach Kelly | 4TRAINER |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 weeks |
| 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 | 55 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Kelly Pamela Ainsworth | Racquel Nina Dennison |
In-app purchases
Coach Kelly
- Monthly 1:1 Coaching$99.991 Month
4TRAINER
- Standard monthly subscription14 Days trial$49.991 Month
- Three month subscription$129.993 Months
- Six month subscription$244.996 Months
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- Annual Subscription$449.991 Year








