LogicInk Hydration Signal Early Adopter Program

LogicInk Hydration Signal Early Adopter Program

$199.50   50 units ($3.99 each)
Unit price per

Pre-purchase Now to Hold Your Spot in the First Batch of 1,000 Units in January of 2024

We are excited to share that our initial production capacity of 1,000 MVP units will allow us to start delivering the LogicInk Hydration Signal to a small group of sports organizations as soon as January of 2024, at a cost of $3.99 per unit with a minimum order quantity of 50 units.

Our goal is to run a pre-sale of this first small batch by first offering the Hydration Signal to teams and organizations who have expressed interest in our work. After a few days we will then open this unlisted page to other organizations until all 1,000 Signals are gone.

We expect to have significantly scaled our manufacturing capacity by no later than Q3 of 2024 at which point anyone will be able to purchase the LogicInk Hydration Signal via our website.

News Alert


We are thrilled to share that an early version of the LogicInk Hydration Signal is expected to be used in an official FIFA World Cup qualifying match this November by a team who has won multiple times the World Cup.

LogicInk Hydration Signals are expected to be shipped in early 2024. Deliveries will be made in the order of purchase.

Why it is important

The majority of athletes train or compete in a dehydrated state†. Multiple research studies†† indicate that the sports performance of many athletes are likely being hindered by substandard hydration habits.

Dehydration is defined as an excessive loss of total body water producing an imbalance of sodium, potassium, chloride, and other electrolytes. As the body loses water, muscles tense and are more likely to sprain or tear. Dehydration can also involve nausea, headaches, dizziness, and may lead to more severe conditions including death.  

A dehydrated athlete has a decreased volume of blood circulating through the body, and consequently, the amount of blood pumped with each heartbeat decreases producing a hypovolemic shock.


A hypovolemic shock is one of the most serious, and sometimes life-threatening, complications of dehydration. It occurs when low blood volume causes a drop in blood pressure and a drop in the amount of oxygen in the body.

† Ayotte et al. 2018.
†† Arnaoutis et al. 2015, Magee et al. 2017, Magal et al. 2015.

How it works

LogicInk is developing a saliva-based hydration monitoring test, called Hydration Signal. The Signal changes in color in response to the total electrolyte levels and it is calibrated to highlight electrolyte imbalances that can be used as an indication of one’s relative degree of hydration, from mildly-to-moderately-dehydrated to severely dehydrated.

This information is available to users without having to perform any exercise (e.g. compared to sweat-based solutions) or without having to use impractical (e.g. urine specific gravity test) or bulky and overly expensive electronic equipment and accessories, thus empowering athletes to make decisions including hydrating themselves and reducing exposure to high temperatures in a productive manner.