CoreKyn
CoreKyn is a workout tracking app for Android and iOS: log every set, rep, and weight, build a daily workout streak, and compare progress with friends.
What is CoreKyn?
CoreKyn is a workout tracking app for Android and iOS, built for anyone trying to train consistently — from home-workout beginners to regular gym-goers. It lets you log the sets, reps, and weight for every exercise you do, and turns that history into daily motivation through workout streaks and comparison with friends, so you stay consistent instead of losing track of your progress.
CoreKyn is built around one idea: the hardest part of training isn't knowing what to do, it's showing up every day. It ships with a general-purpose preset of workouts designed to work with whatever equipment you actually have access to — a full gym, a home rack, or just a pair of dumbbells — so you can start training immediately without building a program from scratch.
Features
Workout Logging
Record every set, rep, and weight in seconds, and build a complete training history.
Equipment-based Presets
General-purpose workout plans built around what you have — bodyweight, dumbbells, a barbell, or a full gym.
Streaks
Build and protect a daily workout streak so training becomes a habit, not a decision.
Friend Comparison
See how your consistency and stats stack up against the people in your training circle.
Training Circles
Connect with friends and training partners to stay accountable together.
Share Your Progress
Share workout summaries and stats with a link or QR code.
Coach Subscriptions
Subscribe to a trained coach in-app for personalized guidance on top of your tracking.
Android & iOS
One account, kept in sync across your devices.
Plans
CoreKyn is free to use, ad-supported, for tracking workouts on your device. Upgrading unlocks cloud backup, sharing, and coaching.
Free
- Full workout logging & history
- Equipment-based workout presets
- Streaks & friend comparison
- Training circles
- Ad-supported
Pro
- Everything in Free
- Cloud backup & multi-device sync
- Full workout history sync
- Share your progress via link/QR
- Ad-free
Coach
- Everything in Pro
- Subscribe to a trained coach for personalized programming
- Coach & student assignment features
How We Use Your Data
CoreKyn collects and uses your workout data (sets, reps, weight, exercises) to provide core app functionality, such as tracking your progress, generating workout streaks, and enabling comparison with friends. We also use your data to personalize your experience and improve our services. Your privacy is important to us, and we are committed to protecting your personal information.
For a detailed explanation of how we collect, use, and protect your data, please refer to our Privacy Policy.
Account Sign-In & Firebase
CoreKyn does not offer “Sign in with Google”, and we do not request access to your Google Account profile, contacts, Gmail, or Drive. To create and verify your account, we use Firebase Authentication, a service operated by Google, in two ways:
- Phone number sign-in — when you sign up or log in with a phone number, we send a one-time SMS code and Firebase verifies that code on our behalf. Firebase returns a verified phone number to our backend; no other Google Account data is involved.
- Email sign-in — when you sign up or log in with an email address, Firebase sends a verification link and confirms your email once you click it, so we can trust that the address belongs to you.
In both cases, Firebase is used only to verify that you control the phone number or email you provided. The only account data CoreKyn stores as a result is that phone number or email address, tied to your CoreKyn account — we do not receive or store your Google password, contacts, or any other Google Account data. See our Privacy Policy for full details.
Resources
- Privacy Policy
- Terms of Service
- Support: hello@su-do.in