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App Store Apps > Health & Fitness > Nix Solo
Nix Solo icon

Nix Solo

by Nix, Inc. · Health & Fitness · Free
On the App Store since November 2022 · Data updated 2026-10-27

Nix Solo is made and published by Nix, Inc. AppBrain is an independent app data site and isn't affiliated with Nix, Inc. The app name, icon, screenshots and description belong to Nix, Inc. and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
4.82
68 ratings
Last updated
September 24, 2026
Size
65.1 MB

It doesn't have enough ratings yet to judge what users think.

Official page on the App Store

User feedback

Ratings and reviews on the App Store

Comments on Nix Solo for iOS

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Store listing

By Nix, Inc., from the App Store
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Screenshots by Nix, Inc., from the the App Store listing
Description by Nix, Inc. Written by the developer, not by AppBrain. Click to read.
To train at your peak, you can’t just train hard. You need to train in a way that’s informed by your personal biology.

The Nix Solo app allows users to monitor their own personal fluid and electrolyte losses in real time during a workout using the Nix Hydration Biosensor. This companion app provides valuable insight into their unique sweat composition and individual hydration needs based on their personal biology.

At Nix, we built the first biosensor to analyze sweat and provide endurance athletes with personal hydration data – scientifically validated, and delivered in real time.

Once paired with the Nix Hydration Biosensor, you are on your way to understanding your hydration needs with Nix Solo, our individual monitoring app. We’re the first hydration biosensor of its kind — the only pod, patch, and free app combination to:

- Evaluate the electrochemical biomarkers in your sweat
- Send real-time updates to your phone, Apple Watch, Garmin Watch, or Garmin Bike Computer
- Correlate your sweat data and your training environment with the Nix Index – a composite index of six environmental factors: temperature, humidity, dew point, altitude, wind speed, and solar load
- Provide post workout Sweat Intelligence via insights on your Sweat Profile including fluid loss rate, electrolyte loss rate and sweat composition metrics

Before your workout, tell the Nix Solo app what type of workout you’re doing and what you’ll be hydrating with. You can also consult the Nix Index to see how your environment impacts your hydration needs.

Once you start sweating, our single-use patch begins measuring and analyzing your fluid and electrolyte losses minute by minute- metrics that represent your unique “sweat composition.” This data is instantly streamed to our app, and can also be shared with devices like your Apple Watch, Garmin Watch, and Garmin bike computer.

The result is knowing when, what, and how much to drink in real time to enhance both safety and performance.
Official page on the App Store Also on Google Play

Safety and technology

Found in the app by AppBrain
Price
Free
App size
65.1 MB
Content rating
Everyone

Technologies used by Nix Solo

Releases

Updates seen on the App Store
Version
3.48
Launched
November 2022

No changelog data

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Rankings

App Store top charts

App Store Rankings for Nix Solo

This app is not ranked

About the app and developer

About Nix Solo

Nix Solo is a health & fitness app developed by Nix, Inc.

User Ratings

Nix Solo is rated 4.82 out of 5 stars. The rating is based on 68 ratings.

App Information

Nix Solo is freely available from the App Store. The app size is 65.08 MB. The latest version available is 3.48. The last update was on September 24, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since November 2022.

Developer information for Nix, Inc.

Nix, Inc.

Address:

Frequently asked questions about Nix Solo

Is Nix Solo free?

Yes. Nix Solo is free on the App Store.

Is Nix Solo still available?

Yes. Nix Solo is on the App Store, and the last update we saw was on September 24, 2026.

How large is Nix Solo?

Nix Solo is 65.08 MB.

Is Nix Solo suitable for children?

App Store rates the content of Nix Solo as suitable for everyone.

How do people rate Nix Solo?

Nix Solo scores 4.82 out of 5 stars, from 68 ratings on the App Store.

Who made Nix Solo?

Nix Solo was developed by Nix, Inc. It is listed in the health & fitness category on the App Store.

What are the best alternatives to Nix Solo?

People looking at Nix Solo also look at these health & fitness apps: CORE Thermal Sensor, hDrop App, Fuelin - Performance Nutrition, Saturday: Pro Fuel & Hydration, RaceDay Triathlon Planner.

Share Nix Solo

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Overview Alternatives Reviews Rankings Technology
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