This week I’m taking a break from my normal app posts and posting about something a bit more simple. Last week, I wrote about how I’m using Keyboard Maestro to remind me to drink water when I’m at my desk, but I recently received a small device that works wherever I’m at and I just had to share it.

As I mentioned last week, I’ve explored countless options: expensive water bottles that track your drinking, less expensive apps for your phone that nag you to drink, even drawing timelines on existing water bottles. None of them worked for me.

I’m not sure where I first read about Ulla, but boy am I glad that I did, because it just works! It’s a simple $25 device that you can strap onto ANY water bottle or cup you already have using an included silicone band. Once on your water bottle, it will blink obnoxiously every 30 or 40 minutes to remind you it’s time to drink. That’s all. It doesn’t beep or buzz your phone. There’s no app involved. Just a tiny little clip on device with a battery that should last for 6 months.

I’ve had it for a little over a week now, and I can say, it works. I almost always have my water bottle within sight, and the blinking light is nearly impossible to miss. The few times I have missed it have been met with my friends asking “Why is your water bottle blinking?”

I was skeptical at trying it, but for $25, I couldn’t be more pleased.

Check out the video.

The even better part, Ulla has a Refer-a-Friend promotion. You’ll get $5 off and I will as well. Check it out, and if you’re interested use code R3C588 at ulla.io.