Furlong
Know when to run, when to rest
About
This app analyzes your running history to provide daily guidance on when to run, when to rest, and why. It focuses on preventing overtraining and injuries by modeling your training load, unlike other apps that prioritize tracking or social features.
What's New in Furlong
1.0.1
September 15, 2026
The Today screen now tells one consistent story about your week. • Today, tomorrow, the week strip, the Rhythm screen and the morning notification all come from one plan, so they always agree. • Doing the run the plan gave you today no longer reshuffles the rest of your week. • Your week runs Sunday to Saturday, and its runs and distance sit beside the week strip.
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FAQ
What is Furlong's main purpose?
Furlong's main purpose is to help runners avoid injuries by analyzing their training load and providing daily recommendations on whether to run or rest, along with the reasoning behind each suggestion.
How does Furlong use my running data?
Furlong reads your running history from Apple Health to model your training load. It then uses this data to make informed decisions about your daily training recommendations, ensuring you don't overtrain.
Does Furlong have ads?
No, Furlong is ad-free. The app is designed with no networking code, meaning no data is sent anywhere, and it contains no advertisements.
What kind of runners is Furlong designed for?
Furlong is ideal for runners who have been injured before and want to prevent future issues, those returning from a break who need help starting slowly, or anyone who has followed a generic plan into an injury.
Can Furlong provide medical advice?
No, Furlong offers training guidance, not medical advice. It does not diagnose, treat, or prevent injuries or any medical conditions. Always consult a doctor or physiotherapist for persistent pain or before changing your exercise program.
What devices does Furlong support?
Furlong currently supports iPhones. It is built to read from and write to your phone's local storage, with no external servers involved.
How often is Furlong updated?
The latest version of Furlong is 1.0, and it was last updated on August 24, 2026. Information on update frequency beyond this is not available.
Is Furlong suitable for competitive runners?
Furlong is not designed for runners seeking kudos, leaderboards, segments, or a social feed. It prioritizes injury prevention and smart training over competitive metrics.
