RBRN Labs

What's New

News & updates from RBRN Labs, the team behind Swelter. Feature announcements, release notes, and a look at what we're building next.

  1. Eight Apple Watch faces showing the Swelter WBGT app: a HIGH RISK reading, a GOOD TO GO reading, the Best Window page, UV index, watch face complications, quick metrics, sunset, and heat index

    WBGT & Wet Bulb Temperature App for Apple Watch

    Swelter 1.6.0 brings a full WBGT Apple Watch app: current heat risk, watch face complications, a Smart Stack widget, and your best window for outdoor activity, right on your wrist.

  2. Three Swelter screens: the WBGT gauge at HIGH RISK, a GOOD TO GO reading during a storm warning, and the Week Ahead charts

    Welcome to Swelter

    Swelter is a brand-new iOS app that shows how risky it is to be active outdoors right now and helps you find the best times for outdoor activity.