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Safedrink
Know when you'll be sober — a BAC timer tuned to your body
Log each drink and Safedrink estimates your BAC and counts down to zero. Personalized with Watson's body-water formula, keeps ticking in your notification shade, no account, data stays on device. Free, open-source core. Reference only — never drive on it.
Hi PH — I'm the developer. Built it after one too many mornings wondering whether last night's drinks had cleared. Log each drink as you go; the app personalizes the Widmark r via Watson's total-body-water formula, shows a plain Widmark estimate side by side, and keeps counting in the notification shade after you close it. No account, no server — everything stays on the device. Android only for now (iOS is next). Happy to answer anything about the formula — the calculation core is open source in the repo linked above. It's a reference estimate, not a medical device; please never use it to decide whether to drive.
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About Safedrink on Product Hunt
“Know when you'll be sober — a BAC timer tuned to your body”
Safedrink was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #94 on the daily leaderboard. Log each drink and Safedrink estimates your BAC and counts down to zero. Personalized with Watson's body-water formula, keeps ticking in your notification shade, no account, data stays on device. Free, open-source core. Reference only — never drive on it.
Safedrink was featured in Android (57.6k followers), Health & Fitness (83.2k followers), Open Source (68.9k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 124.2k products, making this a competitive space to launch in.
Who hunted Safedrink?
Safedrink was hunted by Tim Jang. 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.
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Tim Jang