Dusknote

Your health notes, on your phone, yours forever.

Dusknote is a free forever (no upsells), open-source tracker for any ongoing health condition. Entries live on your device, back up to a Google Sheet in your own Drive, and export as a report you can share with anyone you choose.

Try the demo Set it up
The Dusknote Stats screen: months shown as calendars shaded by severity, with episode-day counts and the patterns you choose to watch

Why this exists

Dusknote exists because I lost a few years of health data to a failed phone backup of a notes app. When I went to replace it with an app built for health tracking, I kept finding that they all charged for basic features and would keep my own health information behind their subscription. I built the tracker I actually wanted: one where the data is easy to track, read, and export as a report, readable in a plain spreadsheet and PDFs as a backup, and owned by no one but you.

How it works

Your device holds all of the data

Entries save to your phone.

Your Google Sheet is the backup

It lives in your own Drive. Open it, sort it, export it, with or without the app. Once a month Dusknote also saves a PDF of everything tracked to date to your Google Drive automatically, as a second form of backup.

There is no server

No account to create, no company in the middle, nothing that can shut down or start charging you for your own history later. Your copy talks only to your own Google Drive.

No one can see your data

Your data always stays only with your accounts and your device. The app's one outside contact is asking GitHub whether a newer version exists, and that check carries nothing about you.

Make it yours

Dusknote ships condition-neutral, and is easy to customize and edit within the app to make it truly reflect your condition: your vocabulary, your rating words, your name for the condition you track.

Calm by design

The screen is dark and low on glare, with a big button on the main screen to log an entry. Reaching for it during a 3am episode is quick, and easy on the eyes.

What it looks like

Shown with invented sample data.

The log: entries under month headers, with an event row and a Log an episode button
The log. Your days, newest first.
Stats: a month calendar shaded by rating, episode day counts, and a with-and-without split for a watched factor
Stats. Each month as a calendar, with the patterns you asked it to watch.
Logging a treatment: the time it was taken and a Did it help question
Treatments allow you to track their effectiveness.
Settings: backup status showing All backed up, with links to open the sheet and the monthly backups
Two backups, both in your own Drive.
The first page of a printed report: monthly counts and treatment outcomes on paper
Exportable report for anyone you'd like to share your notes with.

Test out a demo

Try it out with the live demo, which runs on sample data. There's nothing to install, no sign-in, and it resets every time it loads, so tap around freely to get a feel for it.

Try the demo

Set it up

You will create your own copy, and you will need to use three free accounts (GitHub, Vercel, Google). It should take about an hour to set up, and you can complete it with either an AI assistant walking you through every step or manually on your own; the setup guide explains how to do both.

Read the setup guide

Dusknote is free and always will be. If it's been useful and you're able, a tip helps me keep maintaining and improving it.