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HAT

Your entire day, reconstructed. Locally. Privately. Yours.

A local, privacy-first time-tracking diary that maps offline gaps from OS screen-time. Built to passively log what you do away from your phone — work, rest, sleep, anything — without the battery drain. HAT has zero internet permission. No cloud, no account, no tracking. Everything stays in a local database on your device. Export a signed backup vault when switching phones. That's it.

Top comment

I needed an app to track how long I've slept for, but most apps are heavy on battery drainage, and sleep trackers must be open while you sleep, I'm not even sure where the data was going. This app will help you track what you did off of your phone.

About HAT on Product Hunt

Your entire day, reconstructed. Locally. Privately. Yours.

HAT was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #75 on the daily leaderboard. A local, privacy-first time-tracking diary that maps offline gaps from OS screen-time. Built to passively log what you do away from your phone — work, rest, sleep, anything — without the battery drain. HAT has zero internet permission. No cloud, no account, no tracking. Everything stays in a local database on your device. Export a signed backup vault when switching phones. That's it.

On the analytics side, HAT competes within Android, Productivity, Privacy and GitHub — topics that collectively have 765.5k followers on Product Hunt. The dashboard above tracks how HAT performed against the three products that launched closest to it on the same day.

Who hunted HAT?

HAT was hunted by dvn. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.

For a complete overview of HAT including community comment highlights and product details, visit the product overview.