It's free, no account needed (no server, all data stays on your phone), no tracking, open sourced (https://github.com/bdav24/illll).

It's a tracker for 6 longevity habits backed by research:

1. Sleep — brain clears toxic waste during deep sleep, <7h raises mortality 13%

2. Exercise — 11 min/day of walking cuts premature death risk 23% (Br J Sports Med, 2023)

3. Healthy eating — cuts depression risk 33% (SMILES trial), cardiovascular disease 30% (NEJM, 2018)

4. Structured breathing — 5 min/day, lowers cortisol, raises HRV (Stanford, 2023)

5. Morning sunlight — 10-30 min, sets circadian clock, boosts serotonin (JAMA Psychiatry, 2016)

6. Gratitude — writing 3 things daily, measurable neural changes lasting months

But you can also set custom goals and add your own habits.

https://apps.apple.com/us/app/illll-live-longer/id6760903742

https://play.google.com/store/apps/details?id=com.devanco.il...

Any feedback is welcome!