The best Fitness Technology newsletters

Asier, a small-studio developer behind the FitWoody fitness app, writes about the realities of building apps: AI-driven competition, the upkeep of legacy app versions, and map coordinate offsets in China. The posts mix personal anecdote with concrete technical detail and a clear opinion on the craft of indie development.

A company blog from a corporate wellness challenge app, covering product updates alongside commentary on wearables, employee engagement and run clubs. Readers get feature announcements and a lighthearted, opinionated take on fitness tech and workplace culture.

Product update newsletter for HeartCast, an iPhone and Apple Watch app that broadcasts heart rate to Bluetooth fitness equipment. Issues cover new device support, language localization, and HealthKit permission troubleshooting.