RK Fit
Williams, Rennison Health & Fitness iPhoneiPadiPod touch
RK Fit is a free Health & Fitness app for iPhone and iPad by Williams, Rennison. Requires iOS 13.0. Updated October 4, 2026.
- Price
- Free
- on the App Store
- Size
- 40 MB
- Age 4+
- Updated
- Oct 4
- 2026 · v0.1.7
Screenshots
About RK Fit
RK Fit is a structured strength training platform built for coaches, athletes, and serious lifters who want measurable progress. Designed by certified strength and conditioning professionals, RK Fit emphasizes technically sound lifting, progressive overload, and long term development. Every program is intentional. Every phase serves a purpose. Usage of the RK Fit app is governed by Apple's End User License Agreement. Please view it here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Whether you are coaching athletes, preparing for powerlifting, or building foundational strength, RK Fit provides structured execution with clear progression. Structured Programs Access professionally designed programs including: • 12 Week Progressive SBD Programs • Full Body Strength Development • Glutes and Core Focused Training • Beginner to Intermediate Foundations • Hypertrophy Based Phases Each program follows logical progression to support consistent strength gains for both coaches managing athletes and individuals training independently. Squat only, bench only, and deadlift only programs will be added soon. Exclusive technical tutorials for these lifts are available inside the app now. Learn Proper Technique Every exercise includes: • Video demonstrations • Clear coaching cues • Execution guidance • Load and rep targets Demonstrations may feature multiple coaches to provide varied technical perspectives and reinforce proper mechanics. Track Every Lift • Log sets, reps, and load • Monitor progression over time • Follow structured weekly progression • Eliminate guesswork from programming Built For • Coaches programming structured strength plans • Athletes preparing for competition • Powerlifters refining SBD performance • Beginners learning proper mechanics • Lifters who value structured progression Training Philosophy Strength is built through precision, progression, and consistency. RK Fit prioritizes safe loading, mechanical efficiency, and sustainable long term development. No random workouts. No unnecessary complexity. Just structured strength training. Usage of the RK Fit app is governed by the RK Fit Terms of Service, which can be found here: https://api.rk-fit.com/legal/tos
What’s new
Version 0.1.7 · Updated October 4, 2026
Fixes a rare bug where programs didn't progress beyond a week
App privacy
The developer, Williams, Rennison, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Fitness
- Financial Info: Payment Info
- Contact Info: Email Address, Name
- Diagnostics: Crash Data, Performance Data
Used for: App Functionality
Alternatives to RK Fit
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| RK Fit | – | Free | October 4, 2026 | |
| Weight Wiz | – | Free | Dec 5, 2024 | Compare |
| OXY FIT&GYM | – | Free | Oct 23, 2026 | Compare |
| Gravity Defying Fitness | – | Free | Oct 26, 2026 | Compare |
| Gains Performance Studio | – | Free | Oct 23, 2026 | Compare |
| Cal Diary: AI Calorie Tracker | – | Free | Aug 5, 2026 | Compare |
| Tansio-Blood Pressure Log | – | Free | Jun 15, 2026 | Compare |
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