Building a "Passive" Habit Meter for Apple Watch - No manual logging, just 3D physics
Hey everyone!
I’m building AbSync. I got tired of apps that act like your boss and make you type in every glass of water or stress level. I wanted to create a "digital mirror" for your body that does the work for you.
Fun fact on the name: The "Ab" in AbSync comes from the Persian word for water.
How it works: The app doesn't use "one-size-fits-all" rules. For the first 48 hours, it does a Deep Baseline Calibration. It uses your watch sensors to learn what "normal" looks like for you.
Once it learns your rhythm, it shows your status through 3D liquid physics across three tabs:
- Fluid: Your internal hydration trends.
- Zen: Your calm and stress equilibrium.
- Temp Trend: Your body’s thermal changes.
How it works (The "Magic"): Instead of you telling the app what you did, the app watches your body's natural signals.
- Calibration: For the first 48 hours, AbSync studies your unique heart patterns, movement, blood, and skin data to find your "Personal Baseline."
- Inference: Once it knows your "normal," it uses smart math to make an educated guess on your Fluid, Zen, and Temp Trend scores.
- Visualization: It turns those math guesses into 3D liquid. If your Fluid score is high, the cup looks full. If you are off your rhythm, the liquid reacts.
Why I’m building this:
- No Manual Logging: It’s automated based on your personal patterns.
- One-Time Purchase: I hate subscriptions. Buy it once, own it forever.
- Privacy: Everything stays on your watch.
I need your help! I’m looking for beta testers (especially Apple Watch Ultra users) to join the TestFlight. I need to know:
- Does the 3D liquid feel smooth and look "real" when you move?
- Does the 48-hour calibration feel like it "gets" you?
- Are the names Fluid, Zen, and Temp Trend clear?
Comment below if you want a TestFlight link! I’d love to get your feedback on the "Fluid Score" and the overall vibe.