Backer Update (July 2016)

Our team has been hard at work sending out your Pryme Vessyls and continually improving the experience. We wanted to send out a quick update to let you know where we are and what’s coming up as we move forward.

CEO: Alan Johnson

We’re ecstatic to welcome Alan Johnson as the new CEO of Mark One. He brings a wealth of experience to the team and a passion to help improve the health and lives of our audience. You can find more about this in our recent announcement introducing Alan.

Pryme Vessyl Deliveries

We’ve been sending out Pryme Vessyl opt-ins at a steady pace, and have no intentions of slowing down. We’ll continue to send out your Prymes as quickly as possible, and will ensure you receive your order if you claimed it during the opt-in survey. As mentioned in our previous update, we’re moving through North American iOS deliveries now while we set up international deliveries and finalize the Android experience.

For international users, we’re working with the regulatory bodies in all international regions to arrange deliveries to you. We’re progressing in this area, and will start sending these out as all the checks are completed. We know you’re excited to experience your Pryme, and we’re excited to have all of these orders delivered. We’ll keep you posted as we setup a seamless fulfillment process with all international regions.

Android App

Your Pryme experience relies on your Pryme Vessyl and the mobile app. For our Android users, we’re working to wrap up the development of the app, and will have it submitted to the Google Play store as soon as we can. Once it’s available to download, we’ll be sure to release another announcement and send your Pryme Vessyl so that you can get started as soon as possible. We appreciate the patience so far as we ensure an engaging and impactful experience for you.

Vessyl Progress

We know you’re excited to receive your Vessyl pre-order, and we’re still focused on bringing you a high quality experience. You can find our latest development timeline in this post, we are on track with these expectations and will share more tangible updates as these new features are implemented.

Accessories + Improvements

We’re always hard at work finding ways to improve the Pryme experience, and we have some new accessories and app improvements to help with this. The latest app version brings new and improved insights to the Pryme Vessyl app, more personalized to your daily activities and lifestyle. We’ve also introduced accessories to the website, including the premium carry bag. You can find it in the Pryme store now!

As always, you can get in touch with our team directly if you have any questions or comments at ‘’. We can’t wait to have everyone experience the benefits of their Pryme!

— The Mark One Team

Vessyl Production Update

What’s happening with the original Vessyl?

Many of you are asking this question, and we’d like to share an update on where we are with Vessyl development. In October we mentioned that we were going to take some time to assess what is truly needed to get Vessyl to a place where it will actually help you get healthier. Unfortunately, as of yet we have not met that standard. Though we’re able to build a small number of Vessyls with this technology, it’s critical that every Vessyl we ship has the accuracy and reliability of the one before it.

All of our backers have shown immense patience and support, and we don’t take that for granted. You’ve waited a long time, and in that time we’ve changed parts of the technology to meet our goal. We are asking for a bit more time to assess additional technologies that can supplement the current sensors to achieve the standards we desire. With the success of Pryme Vessyl, we are hiring more talented folks to help manage both products.

We will be doing a comprehensive review of our current technology and some additional technologies. In March, we’ll be able to give you a more accurate timeline on the delivery of your Vessyl.

Below is a link to an early press demo of the technology we are improving…


Where’s my free Pryme?

The quick answer to this is… it’s on the way. The response to Pryme Vessyl has been great; so great that the retail demand threw our estimates off balance, leading to supply constraints. Due to these supply constraints, we are slowly moving through the list of free Prymes. If you haven’t already received a free Pryme, look out for an email from us in the coming weeks to get your shipping information. Note that orders outside of North America will see some delays due to customs. We are putting a solution in place to ensure international orders are delivered on time. We’re also prioritizing orders for those with iOS devices until we complete the Pryme app for Android.

In an effort to better fulfill the demand for Pryme, we are shifting our manufacturing to a larger facility. This will also expedite the shipment of free Prymes.

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


Pryme Vessyl Launches at Apple


Pryme Lockup

We have officially launched Pryme Vessyl in retail and online Apple stores! The reception has been amazing. Though we are out of stock on, you can still purchase at Apple. We are working hard to replenish the inventory for not only the Pryme website, but also for our Vessyl backers, and for future retail expansion.

We want to thank all of you who have already purchased your Pryme Vessyl. We’re excited for you to experience your Pryme. Don’t keep the experience to yourselves though; make sure to share how it feels to be at your Pryme with your friends and families. We’re working with decades of research, medical doctors, and experts, but at the end of the day… you won’t know until you try.

We also want to thank all of our followers and supporters for their patience and excitement. The retail demand has been greater than we initially planned, and the goal is to start shipping out your Pryme Vessyls when we replenish the stock. Also, keep in mind that you are still eligible for a full refund anytime before your Pryme ships.

Thanks again!

– The Mark One Team

Vessyl Backer Update #9

Thanks again for all of your patience and support as we focus on delivering your Vessyl(s). We have two big announcements to share with you below.

The good news

Throughout our Vessyl campaign, we received a large number of notes from backers who primarily drink water and who are mainly interested in getting and staying hydrated throughout the day. Vessyl’s “Pryme” feature resonates with many people because they understand that we are all different and our hydration needs are personal and unique. It’s not about “eight glasses of water,” it’s about knowing what you need right now, as our hydration needs fluctuate day-by-day and even hour-by-hour.

For that reason, we would like to introduce Pryme Vessyl. Pryme automatically tracks your unique hydration needs throughout the day, keeping you at your ‘Pryme’ (mentally sharp and physically strong). You can learn more about our new product at

Pryme Vessyl will be available to the public on November 12, 2015 at some exciting retailers. The good news is that everyone who pre-ordered a Vessyl can get a Pryme Vessyl ($99) for free. We’ll be sending out emails to each pre-order customer, and starting today, backers can opt in to receive a Pryme for free. It is a token of our appreciation for your patience. This does not replace any Vessyl pre-order or reservation; these will remain active in our system and be sent as soon as Vessyl is ready. The first Pryme Vessyl orders will begin shipping on November 12.

Pryme Lockup

The not-so-good news

It is critical that we ship a product that you will be proud to own, and at this point we haven’t achieved a sufficient level of consistency. We know perfection isn’t attainable, but we want to ensure that Vessyl will help you achieve your health goals, so we have decided to push out the arrival of the original Vessyl.

We know many of you are disappointed, and rightly so. We sincerely apologize for the delay, as the hiccups with the interior material and sensor configuration are not things we foresaw and have been a hurdle in the production process.

Our product lead, Hamid Mohammadinia, who formerly led manufacturing at Apple, will continue to assess our sensor challenges. We’ll send out an updated timeline once this assessment is complete. For backers, make sure to opt in for a free Pryme Vessyl, or if not, you can still receive a full refund by getting in touch with our Support team.

We want to hear from you. If you have any comments, questions, or feedback about the two announcements, you can reach us at We’ll get back to you as soon as we can.

– The Mark One Team

Vessyl Backer Update #8

With the sustained focus on sensor improvements, the team has been optimizing everything from the unboxing to on-boarding. We haven’t forgotten your continued patience and support, so with this motivation the team is working to elevate each aspect of your Vessyl experience.

With the rest of the product coming together fluidly, we continue to iterate on our sensors, striving to bring you the best possible experience. To meet these goals, we’re working with brilliant suppliers to be sure that Vessyl lives up to your expectations and our standards.


Pryme Enhancements

While improvements continue, our Health and Software teams have been constantly updating the Pryme algorithm and experience. For those who don’t know, Pryme is your personal hydration metric that provides an estimate of your unique hydration needs throughout the day.

More than 75% of early supporters purchased Vessyl to help tackle a particular health goal, whether that be watching their caffeine habit or monitoring their sugar intake. Hydration is closely tied to all of these goals, and we’re developing Pryme further to make it a powerful addition to your daily routine. You may have seen one example of Pryme in the image we recently shared, pictured above, and we will look more at Pryme as we press forward.


Product Packaging + Experience

As mentioned earlier, the team has been striving to upgrade the Vessyl experience at every level. We’ve made some noted improvements to the charging coaster to improve the power and reliability of the unit, letting you get back to your day a little bit faster. The previous improvements made to the lid design have worked in our favor, upgrading the reliability and making it impressively easy to use.

To get you up and running as fast as possible once your receive your Vessyl, Design has been focused on creating a simple, seamless setup process – exactly as it should be. As all of these improvements continue and the team presses forward, we’ll continue to post our updates and let you know what’s happening. If you want to get in touch with us directly, our team is happy to help out at

The Mark One Team