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. This app uses Google Analytics 4 to collect anonymous usage data such as page views, country of origin, and general device information. IP addresses are anonymized and no personally identifiable information is collected or stored. No advertising features are enabled. You can opt out by using a browser extension or disabling JavaScript.
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. You can clear your data at any time using the button below.
Last updated: March 2026