Aleksandar Velichkovikj
Email: dashwhiz@gmail.com
This is a personal, non-commercial project built with love and effort to make interval training easier — after not finding what I wanted on the market for free.
Feedback, bug reports, and feature ideas are always welcome! Reach out via LinkedIn or email.
Grind takes your privacy seriously. Here is what you need to know:
Anonymous analytics. There is no analytics and no tracking of any kind. No cookies are set, no usage data is collected, and nothing is sent to any third party. The app makes no network requests at all once it has loaded.
Local storage only. Your workouts and preferences are stored exclusively in your browser's local storage on your device. This data never leaves your device.
No accounts. There is no user registration, login, or personal data collection of any kind.
Sharing. If you choose to share a workout via link, the workout data is encoded in the URL itself. No data is stored on any server.
Your rights. Since all data is stored locally on your device, you have full control. The Your data page lets you export a backup, restore one, or erase everything at any time.
Last updated: March 2026