Why it exists

I built this so I wouldn't have to keep filling in paper forms and notebooks while tracking blood sugar for someone close to me. Anyone in the same situation can use it.

Why on-device

Health numbers are personal. SugarTrack does not talk to a server, does not require a login, and does not send readings anywhere. The database lives on the phone. If the phone is offline, the app still works.

There is no cloud backup unless you make one yourself. Use Export for Doctor (PDF or CSV) or Backup in settings to copy data off the phone when you want a spare copy.

What it does

• Log a reading with time, context (fasting, before/after meal, bedtime, or random), an optional note, and an optional meal photo
• See the latest value on the home screen, colored against the target range you set
• Browse history and a trend graph
• Log medications and A1C results
• Set a daily reminder so a reading doesn't get skipped
• Export a report to take to a doctor visit

Units can be mg/dL or mmol/L. Target high/low is yours to set.

How to install

1. Tap the download button above on your Android phone.
2. Open the downloaded file. If prompted, allow installs from this source (Settings → “Install unknown apps”).
3. Tap Install, then open SugarTrack once it's done.

Support this work

SugarTrack is the first of several planned apps for health and lifestyle tracking — all offline, all on-device, and built around problems people actually face. No accounts, no cloud, and no subscriptions.

If this project is useful to you, starring the repository on GitHub is a simple way to show support. It also helps make the case for building more tools in the same spirit.