SpongeUp and running in two minutes
No tools, no complicated pairing. Watch how Sponge goes from the box to tracking every sip, then explore each step yourself.
Charge it over USB-C
Plug in your Sponge for a couple of hours. One full charge lasts about two weeks.
Setup, step by step
Short, narrated walkthroughs of each stage, with captions.
Coming next: part three, downloading the app and setting up your profile. Once every part is finished we will join them into one full tutorial.
Hydration tracker questions, answered
Everything you want to know before and after you order.
A hydration tracker measures how much water you drink during the day. Sponge is a small clip-on hydration tracking device that snaps magnetically onto any water bottle. On-device sensors record each sip automatically and sync to the free Sponge app, so you never have to log water by hand.
Yes. Sponge is built to clip onto the bottle you already own, insulated steel bottles, plastic tumblers, glass bottles and more. There is no special bottle to buy and nothing to refill differently.
Sponge lasts about two weeks on a single charge and recharges over USB-C in a couple of hours. Most people plug it in a couple of times a month.
Yes. In the app you pick which apps to gate, and Sponge keeps them locked until you reach your daily hydration goal, turning your phone into a gentle nudge to drink more water.
Not yet. Apple Health sync is in testing now and ships with the next app update. Today there is a home-screen widget that shows how much you have had and how far you have to go, so on most days you never need to open the app.
Sponge measures real sips with on-device sensors rather than asking you to remember and self-report, which is where most hydration tracking breaks down. The app shows your intake in real time so you always know where you stand.
When you sign up, the app asks for a few details about you and recommends a starting goal from them, so you are not guessing at a number on day one. You can change it whenever you like. Sponge does not adjust the goal for you afterwards based on your activity or the weather — the target stays where you set it, and the tracker measures how close you get.
Charge it over USB-C, download the free Sponge app, and pair over Bluetooth. Then clip it onto your bottle. Setup takes about two minutes and the app walks you through calibrating your bottle size.
The Sponge Dot is a one-button logger for the bottle you already own. When you set it up, the Sponge Hydration app asks for your bottle’s volume. After that, every press logs one full bottle. The Dot does not measure sips, so it only knows what you press. If you want every sip measured automatically, that is the Sponge Hydration Tracker. The Dot is $29.99 plus shipping and tax. It is still in development, and a pre-order can be cancelled for a full refund any time before it ships.
Sponge is $59.99 plus shipping and tax, and the companion app is free on iOS and Android. We build in production batches, and a batch runs once enough pre-orders are reserved to fill it — so rather than quote a delivery date we cannot stand behind, we email you when your batch enters production. You can cancel a pre-order for a full refund any time before it ships, and once it arrives you have 30 days to send it back.
Every Sponge comes with a 30-day money-back guarantee. If it is not for you, contact support within 30 days of delivery for a full refund.
Still have a question?
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