Try Pryme for Free

Now you can experience your Pryme hydration before purchasing Pryme Vessyl. Just download the Pryme app and test it out for yourself.

Our mission is to empower you to make healthier choices, so even if you don’t have a Pryme Vessyl, it’s important that you are able to experience being at your best.

With full access to the Pryme app, you’ll be able to track your personal hydration needs throughout the day. You’ll also be able to connect your activity tracker (Fitbit, Apple Health, Jawbone, etc) for the most accurate Pryme measurement.

You can download the app here. Below is a preview of the updated app.



Pryme Integration Update (Fitbit)

Pryme Everywhere
We’re available to you whenever and wherever you need help, have any questions, or just want to connect with us. You can find Pryme Vessyl on Facebook, Twitter, Instagram, our blog, and now Snapchat. If you follow us on Snapchat (@myvessyl), you might even see some exclusive, behind-the-scenes updates. Don’t forget to share your experience with #prymevessyl.


As always, if you have any questions or comments, you can reach out to us at

Pryme Vessyl: Major Updates


We just released a major update to your Pryme Vessyl firmware. It is designed to significantly improve your daily experience with Pryme. The new firmware update will provide a much more reliable Bluetooth connection.

In your Pryme app, you should automatically receive the Firmware update request. If not, you can find the update in Settings > About Vessyl > Update Firmware.

New App Features
In addition to the new firmware, we have also released an app update (v1.3). In this update you’re now able to see your daily Pryme chart from any screen by rotating your iOS device to landscape mode. We’ve also added a safety notification that let’s you know if you are drinking too much, too quickly.


As always, if you have any questions or comments, you can reach out to us at

Pryme App Updates (v1.2.2)


Connection Trouble?

We’ve heard that some Pryme users are experiencing breaks in connection between your Pryme and your phone. We’ll be sending out a fix for this soon. This fix will also extend your battery life significantly. In the meanwhile, you can use these steps to reset and reestablish the connection between your devices.

If you have any questions, please reach out to us at

Pryme App Now Sharing to Apple Health

Happy Holidays!

After some great feedback from our Pryme family, we have enabled the option to share your water consumption with the Apple Health app. In our new Vessyl app release 1.2.1, you can turn this feature on in the “Preference” menu under “Settings”.

Apple Health Screenshot:


Now you can keep your Pryme level accurate with activity data, while being able to get a full picture of your overall health with our seamless connection in the Apple Health app.

You can download the latest app at, or check for an update on your phone in the App Store!

– The Mark One Team.