Gretchen Walker gave advice on creating a BLE iOS application.

Gretchen wrote The Ultimate Guide to Apple’s Core Bluetooth on the PunchThrough (@PunchThrough) blog. There are many other good posts on the blog about BLE from a device perspective and app development (iOS and Android). PunchThrough also makes LightBlue, a great BLE debugging app you can find wherever you find your mobile apps.

PunchThrough is hiring embedded software engineers in the Minneapolis, MN area.

Chris and Gretchen both recommend Ray Wenderlich’s site for learning about Swift. Chris also liked the Big Nerd Ranch books: iOS Programming and Swift Programming.