LUCY® Smart Cap

Your multi-tasker: the Smart Cap that cleans, tracks and reminds.

Made in Austria

Compatible with the waterdrop® Hydration App

TÜV certified

LUCY® Smart Cap – Your smart drinking assistant

Cleans. Tracks. Reminds. 

The innovative UV-C purification function deactivates up to 99.9999%* of potential germs in your drinking water. At the same time, your water consumption is automatically tracked and the LUCY® Smart Cap blinks regularly to remind you to drink more water. 

LUCY® Smart Cap
LUCY® Smart Cap
LUCY® Smart Cap
LUCY® Smart Cap

LUCY® Smart Cap

Start drinking more water today: The LUCY® Smart Cap effectively improves your drinking behaviour in conjunction with our waterdrop® Hydration App. Purified water, tracked drinking progress and regular reminders are just the push of a button away.

How the LUCY® Smart Cap helps you drink more water

How the LUCY® Smart Cap helps you drink more water

1. Time-of-Flight sensor
Regularly measures how much water is left in the bottle.

2. 70 mW / 265nm UV-C LED
Deactivates up to 99.9999%* of all bacteria and viruses.

3. Reminder
Gently flashes to remind you to take the next sip.


Take control of your hydration.

Keep an eye on your hydration like never before. By tracking your fluid consumption and recording it in the waterdrop® Hydration App, the LUCY® Smart Cap will help you develop better long-term drinking habits. All you have to do is drink water, LUCY® will take care of the rest.


One sip further.

Life is busy and can distract us from drinking water. With LUCY®'s reminder function, you'll never forget again. By gentle flashing at regular intervals when your hydration goals haven't been reached, the LUCY® Smart Cap helps get your hydration game back on track.

*The following substances have been tested by Eurofins: Colony-forming units (22°C / 71 hrs - EN ISO 6222:-1: 1999-07), Colony-forming units (37°C / 24 hrs - EN ISO 6222:-1: 1999-07), Coliform bacteria (EN ISO 9308-1: 2014-12), Enterococcus (EN ISO 7899-2: 2000-11), Pseudomonas aeruginosa (EN ISO 16266: 2008-05). For detailed test reports, please reach out to

**Find detailed test results here.

App your drinking game

To get even better results, connect the LUCY® Smart Cap with the waterdrop® hydration app: Together, they will help you keep on track with your fluid-intake, remind you to drink and challenge you to take it one sip further.

Let us introduce... LUCY®.

Rewatch our livestream and let us introduce you to the LUCY® Smart Cap with all its innovative features.