Last updated: September 29, 2026
About RunFit
RunFit (RunFit) is a free hobby project that calculates RFI and related running views from activity data you choose to connect. It is provided for personal, informational use.
Your use of the app
You are responsible for the accounts, devices and data you connect to RunFit and for complying with the terms of the services you use with it. Do not use RunFit to access another person's data without authorization or for unlawful purposes.
Training and health information
RFI, workout classifications, trend views and race-goal calculations are estimates intended to help you inspect your own running data. They are not medical advice, a diagnosis, a guarantee of race performance, or a substitute for professional coaching or medical guidance.
Third-party services
RunFit can connect to services operated by third parties, including Strava, and may link to other third-party sites. Those services are governed by their own terms and policies. RunFit is independent and is not developed, sponsored or endorsed by Strava or other referenced fitness-platform brands.
Third-party service providers are not responsible for RunFit and do not provide warranties or support for RunFit. To the maximum extent permitted by applicable law, those third parties are not liable for claims arising from your use of RunFit.
Availability and changes
RunFit is provided on an as-available basis. Features may change, stop working, or become unavailable, including when browsers or connected third-party APIs change. No guarantee is made that the service will always be available, error-free or suitable for a particular purpose.
Your data
Your activity data is stored only on this device and is not stored in RunFit's servers. For details about browser storage, Strava access, deletion and third-party services, see the Privacy Policy.
Optional support
Optional Ko-fi contributions support project upkeep. Contributions do not unlock features or purchase access to Strava data or functionality.
Changes to these terms
These terms may be updated as the project changes. The date at the top of this page will be updated when material changes are made.