Leah Could you please tell me whether the biological age is evaluated directly on the iPhone without the data being evaluated on a server or is the data calculated for this by an AI? If calculated by an AI, will it also be possible for it to be evaluated directly on the mobile phone without my data leaving my iPhone? Thanks:)

Please add that simple number to the free version.

Sad that it’s behind paid subscription.

Just an indication of the biological age would’ve been nicer

Sad it's behind the paid version.

I would expect it to be there no matter what, since it's a simple calculation.

Pro should be suggestions & plans to improve it.

Yes Biological age addition would be awesome

References: Ekelund, U., Tarp, J., Steene-Johannessen, J., Hansen, B. H., Jefferis, B., Fagerland, M. W., Whincup, P., Diaz, K. M., Hooker, S. P., Chernofsky, A., Larson, M. G., Spartano, N., Vasan, R. S., Dohrn, I.-M., Hagströmer, M., Edwardson, C., Yates, T., Shiroma, E., Anderssen, S. A., & Lee, I.-M. (2019). Dose-response associations between accelerometry measured physical activity and sedentary time and all cause mortality: Systematic review and harmonised meta-analysis. BMJ (Clinical Research Ed.), 366, l4570. https://doi.org/10.1136/bmj.l4570

Jayedi, A., Khan, T. A., Aune, D., Emadi, A., & Shab-Bidar, S. (2022). Body fat and risk of all-cause mortality: A systematic review and dose-response meta-analysis of prospective cohort studies. International Journal of Obesity, 46(9), 1573～1581. https://doi.org/10.1038/s41366-022-01165-5

Li, J., Liu, X., Yang, Q., Huang, W., Nie, Z., & Wang, Y. (2025). Low lean mass and all-cause mortality risk in the middle-aged and older population: A dose-response meta-analysis of prospective cohort studies. Frontiers in Medicine, 12. https://doi.org/10.3389/fmed.2025.1589888

Shailendra, P., Baldock, K. L., Li, L. S. K., Bennie, J. A., & Boyle, T. (2022). Resistance Training and Mortality Risk: A Systematic Review and Meta-Analysis. American Journal of Preventive Medicine, 63(2), 277～285. https://doi.org/10.1016/j.amepre.2022.03.020

Windred, D. P., Burns, A. C., Lane, J. M., Saxena, R., Rutter, M. K., Cain, S. W., & Phillips, A. J. K. (2024). Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study. Sleep, 47(1), zsad253. https://doi.org/10.1093/sleep/zsad253

World Health Organization. (2020). WHO guidelines on physical activity and sedentary behaviour. World Health Organization. https://apps.who.int/iris/handle/10665/336656

Yin, J., Jin, X., Shan, Z., Li, S., Huang, H., Li, P., Peng, X., Peng, Z., Yu, K., Bao, W., Yang, W., Chen, X., & Liu, L. (2017). Relationship of Sleep Duration With All‐Cause Mortality and Cardiovascular Events: A Systematic Review and Dose‐Response Meta‐Analysis of Prospective Cohort Studies. Journal of the American Heart Association. https://doi.org/10.1161/JAHA.117.005947

Zhang, D., Shen, X., & Qi, X. (2016). Resting heart rate and all-cause and cardiovascular mortality in the general population: A meta-analysis. CMAJ, 188(3), E53～E63. https://doi.org/10.1503/cmaj.150535

I've had Whoop for 2 years now and I'm using Bevel - the biological age would be great!

I would like to have it as well, please

It would be interesting to be able to see the biological age