App for Vest
With the app, this turns on randomly.
Also, a fuel gauge would be nice to see how much charge I have remaining.
Otherwise, very convenient to be able to control my temperature via Bluetooth.

Control the heat output of your Bluetooth-enabled heated gear. Adjust settings to high, medium, or low, and manage up to two items simultaneously.
1.0.0
January 16, 2020
The Volt Heated Clothing app allows you to power your gear on and off, and select from three heat levels: High (Red), Medium (Blue), and Low (Green). Ensure your gear's Bluetooth controller switch is installed and paired with your device.
Yes, you can pair and control up to two Volt heated items simultaneously using the app. This allows for convenient management of multiple pieces of gear.
The Volt Heated Clothing app is available for iPhone and iPod devices. It requires iOS 4+ and was last updated on January 16, 2020.
Yes, the Volt Heated Clothing app is completely free to download and use. There are no in-app purchases or subscription fees associated with its functionality.
No, the Volt Heated Clothing app is ad-free. You can control your heated gear without any interruptions from advertisements.
The Volt Heated Clothing app has an age rating of 4+. This indicates it is suitable for users of all ages.
The Volt Heated Clothing app was last updated on January 16, 2020, with version 1.0.0. As of this update, there have been no subsequent releases.