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Most products in this space turn a wearable’s signals into one “age”. Longstanding asks you to do ten field tests every quarter and reads each against published norms and the line you need to be on for 85. These pages say where each approach is the better one.
- Longstanding vs Apple Watch Cardio FitnessApple Watch estimates VO₂max from outdoor walks, runs and hikes and classifies it against your age and sex. Longstanding reads that estimate as one of ten tests, and tells you the line you need for 85.A VO₂max estimate from a watch
- Longstanding vs Garmin Fitness AgeGarmin turns VO₂max, resting heart rate, activity and body composition into a fitness age. Longstanding keeps the tests separate and reads each against norms and the line for 85.A fitness age from a watch
- Longstanding vs WHOOP Age and Pace of AgingWHOOP’s Healthspan turns nine tracked metrics into a WHOOP Age and a Pace of Aging. Longstanding measures ten capabilities directly, each against published norms and the line for 85.A healthspan score from a wearable
- Longstanding vs Oura Cardiovascular AgeOura estimates how your large arteries are ageing from the shape of the ring’s pulse signal. Longstanding measures what you can do: strength, balance, stairs, aerobic capacity, each against norms and the line for 85.An arterial age from a ring
- Longstanding vs Juvis Verified Fitness (LongevityGames)Juvis records your sets on video, checks form with pose tracking and ranks you on leaderboards by age and sex. Longstanding tests the same kinds of movement with no camera and no leaderboard, against norms and the line for 85.Video-verified fitness records
- Longstanding vs VO2 Max Pro (Track Fitness Age)VO2 Max Pro reads your Apple Watch VO₂max and turns it into a fitness age, trends and a shareable card. Longstanding reads the same number as one of ten tests, each against norms and the line for 85.A fitness age from Apple Health
Everything on this page about the other product was read off its own pages on the date shown. Prices are not listed, because they change and a stale one would mislead.