Petals: Cannabis Use Tracker

Petals is a free and open source cannabis tracker that helps you understand your habit — and change it at your own pace.

Whether you want to quit weed, take a tolerance break, cut down gradually, or simply know how much you actually use, Petals gives you the numbers. No account, no sign-up, and your data never leaves your phone.

TRACK YOUR USE

- Log every session: amount in grams, cost per gram, date and time

- Record the consumption method: smoked, vaporized, edible or other

- See the time since your last use, down to the second

- Track how much you spend on weed, today, this week and overall

- Add a use in one tap from the home screen widget

UNDERSTAND YOUR PATTERNS

- Statistics and graphs of your cannabis usage over time

- Usage by hour of day and by day of week, so you can see when the urge really hits

- Filter your history and spot the trends you would never notice from memory

- Watch the real cost of the habit add up

CUT DOWN AT YOUR OWN PACE

- Time-gate your sessions: set a minimum interval between uses and let the timer hold you to it

- Register pause periods for a tolerance break or a full stop

- No streak shaming, no pressure: the app shows you the data, you set the pace

WITHDRAWAL AND DRUG TESTS

- Track withdrawal symptoms over time: irritability, anger, restlessness, sleep difficulty, anxiety, decreased appetite and discomfort

- Estimated THC concentration after your last use

- Estimates of when urine, blood, saliva and hair tests may come back clean, with the sources cited

PRIVACY BY DESIGN

- All of your data stays on your device

- No account, no cloud, no analytics

- Lock the app behind a personal PIN