Kinetic Blog
Notes on tracking, fitness and privacy.
The Kinetic blog: automatic activity tracking, evidence-based fitness and app privacy, from iPhone location permissions to VO2 max and fat loss.
Japanese Walking: The 3-Minute Interval Routine, Fact-Checked
Japanese walking (3 min fast, 3 min easy) went viral in 2025. We read the Shinshu University studies: what they found, what they didn't, how to start.
Kinetic vs Arc Timeline: An Honest Comparison
Arc Timeline is the veteran iPhone location diary; Kinetic is new. A dated, sourced look at features, privacy and price, including where Arc wins.
7,000 vs 10,000 Steps: What the 2025 Lancet Study Actually Says
A 2025 Lancet review linked 7,000 steps a day to 47% lower death risk vs 2,000. What that means, what it doesn't, and why 10,000 lives on.
Google Deleted My Timeline: How to Keep a Location Diary on iPhone
Google Maps Timeline moved onto your phone, and some people lost years of history. Here's how to save what's left and keep a location diary on iPhone.
Fitness Tracker Apps Used to Be Automatic. What Changed?
Moves died, Google Timeline went on-device and iOS stopped handing out 'Always' location. Here's what happened to automatic tracker apps, and what works now.
How to Increase Your VO2 Max (Without Falling for the Hype)
What the research says about raising VO2 max: Norwegian 4x4, Tabata, 30/30, sprint intervals, easy base training, plus how accurate Apple Watch Cardio Fitness is.
The Easiest Way to Lose Fat: Walk More, Eat Protein, Skip the Magic Numbers
Daily walks and high protein are a strong fat-loss combo, but not for the reasons you've heard. The science on fasted cardio, 'fat-burning zones' and protein.
How to Tell What Data Your Apps Are Taking (Using ChatGPT or Claude)
A practical guide to app privacy labels, the iPhone App Privacy Report, data requests, and ChatGPT/Claude prompts that turn privacy policies into plain English.