Build Your Own BLE Water Bottle Tracker (No Code)
If you’ve been searching for how to build your own BLE water bottle tracker, you probably want something that fits your bottle, your goal, and your routine — not a generic app you have to bend yourself around. Good news: you can build exactly that in Auto, no hardware wiring or code required.
Build it yourself in Auto
Most guides for a smart hydration DIY BLE tracker send you shopping for a microcontroller, a flow sensor, and a soldering iron. That’s fun if you love electronics, but overkill if you just want to know whether you hit your water goal today. The same goes for building a water consumption tracker using NFC stickers — clever, but fiddly to set up and maintain.
Auto takes a different route. It’s camera-first: you describe the app you want, snap a photo of your bottle or glass, and Auto builds you a personal mini-app (a “Frame”) around it. Instead of pairing hardware, you log intake by photo and let the app estimate the amount — no sensor required.
To build your own:
- Open Auto and describe your tracker in plain language — goals, units, reminders, the works.
- Snap a photo of your usual bottle or glass so it can estimate intake.
- Refine it by asking for tweaks until it fits your day.
That’s the whole point: a DIY smart water bottle that’s yours, built in minutes.
How someone built theirs
One Auto user built a full water tracker this way, and their prompts are a great blueprint.
They started broad: an app that asks for weight, age, height, sex, and activity level during onboarding, then sets a daily goal based on weight (with the option to override it manually). They asked for reminder notifications, photo-based intake estimation from bottles and glasses, a custom “add ml” button, a calendar for streaks, and a stats view with weekly and monthly bar graphs. The centerpiece was a bold water-bubble that fills up with your daily percentage.
From there it was steady refinement. They fixed the settings screen to expose units (ml/oz), cup size, and a reminders toggle. They made onboarding show only once and moved those values into settings so they could edit the goal later. They added photo thumbnails to the daily log, the ability to edit or remove an entry, and a details view with proper padding and bigger text.
The finishing touches were pure personalization: matching each log icon to the button pressed, subtly animating the waves in the bubble, tuning where the “added” toast appears, and sizing the icons just right. Notably, they used “go back to the previous version” when a change didn’t land — so experimenting costs you nothing.
You don’t have to copy any of this. It’s proof that people already build these — Frames like “Water Tracker” and “Hydration” exist because someone wanted their own.
FAQ
Do I need a BLE or NFC water bottle? No. Auto uses photo estimation, so any bottle works — no hardware, chips, or stickers.
Can I change my goal after setup? Yes. Build in an editable goal and onboarding values you can adjust anytime in settings.
How long does it take? A basic version takes minutes; refining the details is optional and iterative.
Is it really mine? Yes — you own the Frame and can keep reshaping it to fit your routine.