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Petals: Cannabis Use Tracker

Weed tracker to quit, cut down or understand your cannabis use. Open source.
新版本 3.44.0
The all-time chart shows your first day again, and every day sits under its correct date. Before, it hid the first day and labelled each day one day early.
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
- Export and import everything as plain CSV files — your data belongs to you

HARM REDUCTION

- Built-in harm reduction information, because using less safely beats using blindly

FREE AND OPEN SOURCE

Petals is free and licensed under the AGPL-3.0. The full source code is public, contributions are welcome, and the app is translated by its own community of users.

版本

雖然在下方可選擇下載 APK 檔案,但要留意這樣的安裝方式將不會收到更新通知,是一種較不安全的下載方法。建議您先安裝 F-Droid 用戶端使用。

下載 F-Droid
  • 版本 3.44.0 (3044000) 建議 於 2026 年 9 月 27 日新增

    arm64-v8a armeabi-v7a x86 x86_64

    此版本需要 Android 8.0 或更高的版本。

    此套件包由 F-Droid 建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • 執行前景服務
      允許應用程式使用前景服務。
    • 啟動時執行
      允許應用程式在系統完成開機程序後立刻自行啟動。這會增加手機的開機時間,而且會因為系統一直執行該應用程式導致手機的整體運作速度變慢。
    • 控制震動
      允許應用程式控制震動。
    • 防止手機休眠
      允許應用程式防止手機進入休眠狀態。
    • br.com.colman.petals.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 10 MiB PGP 簽章 | 建置紀錄

  • 新版本 3.43.4
    The button on the home screen widget works now. Adding a copy of your last use from the widget silently did nothing before.
  • 版本 3.43.4 (3043004) - 於 2026 年 8 月 10 日新增

    arm64-v8a armeabi-v7a x86 x86_64

    此版本需要 Android 8.0 或更高的版本。

    此套件包由 F-Droid 建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • 執行前景服務
      允許應用程式使用前景服務。
    • 啟動時執行
      允許應用程式在系統完成開機程序後立刻自行啟動。這會增加手機的開機時間,而且會因為系統一直執行該應用程式導致手機的整體運作速度變慢。
    • 控制震動
      允許應用程式控制震動。
    • 防止手機休眠
      允許應用程式防止手機進入休眠狀態。
    • br.com.colman.petals.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 10 MiB PGP 簽章 | 建置紀錄

  • 新版本 3.43.2
    The home screen widget can be added again. It was failing to load when you tried to place it, showing a Can't load widget message instead of your last use.
  • 版本 3.43.2 (3043002) - 於 2026 年 8 月 5 日新增

    arm64-v8a armeabi-v7a x86 x86_64

    此版本需要 Android 8.0 或更高的版本。

    此套件包由 F-Droid 建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • 執行前景服務
      允許應用程式使用前景服務。
    • 啟動時執行
      允許應用程式在系統完成開機程序後立刻自行啟動。這會增加手機的開機時間,而且會因為系統一直執行該應用程式導致手機的整體運作速度變慢。
    • 控制震動
      允許應用程式控制震動。
    • 防止手機休眠
      允許應用程式防止手機進入休眠狀態。
    • br.com.colman.petals.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 10 MiB PGP 簽章 | 建置紀錄