Tech Tips:
Nix Solo Apple Watch Integration

Apple Watch integration refactored January 2026.

Step 1: Download App to Your Phone

Install the Nix Solo app on your phone.

PLEASE NOTE:

  • Nix Solo is only compatible with Apple Watch Series 3 and higher
  • Only volume-based notifications can be received on the Apple Watch (not time-based)
  • Your phone must remain with you during your workout to receive real-time notifications

Step 2: Download App to Your Apple Watch

Once the Nix Solo app is installed on your phone, complete the onboarding process. Then, navigate to the Watch app on your phone.

Scroll down to the Available Apps section, locate the NixSoloWatch app, and click Install. (If you have Automatic App Install toggled on within your Settings, the NixSoloWatch app should already be installed in the Watch app).

Step 3: Allow Health Access, Write Access, and Read Access

Navigate to the NixSoloWatch app on your Apple Watch and follow the Health Access prompts.

  • Health Access "NixSoloWatch" would like to access and update your Health data. Click Review.
  • Allow Write Access "NixSoloWatch" would like permission to write the following data to Health. Toggle on All Requested Data Below
  • Scroll to the bottom of the screen, click Next
  • Allow Read Access "NixSoloWatch" would like permission to read the following data from Health. Toggle on All Requested Data Below
  • Scroll to the bottom of the screen, click Done

The Apple Watch screen should then display the message: Your watch is ready. Select the workout on your phone to start

Step 4: Start a Workout

Open the NixSoloWatch app on your watch until the screen reads: Your watch is ready. Select the workout on your phone to start.

Navigate to the Nix Solo app on your phone, input your workout preferences, and start the workout on your phone.

Note: You cannot receive time-based notifications on the Apple Watch. You must select volume-based notifications if you want to receive alerts on your Apple Watch.

Once the workout begins in the phone app, the Apple Watch will take a moment to sync and then display the time clock and live data screen as displayed on the phone.

Step 5: Log a Replenishment

You can log replenishments during the workout from your phone by swiping up.

You can log replenishments during the workout from your Apple Watch by doing any of the following:

  • When a notification is received, click the Replenish button to log that you've replenished the amount shown in the notification
  • When the live data screen is displayed, swipe left to navigate to an alternate screen with the option to Replenish with a single click
  • When the live data screen is displayed, swipe up on the screen to log that you've replenished the amount shown on the screen

Once you've logged your replenishment, the live data screen will reflect the updated deficit.

Step 6: End a Workout

The workout must be ended from your phone, it cannot be ended from the Apple Watch.

Navigate to the Nix Solo app on your phone, and click the stop button the end and save the workout.