For anyone wanting something portable, I stumbled across this iOS app a while back: https://apps.apple.com/us/app/box-breathing-meditation/id6738800198 https:/

For anyone wanting something portable, I stumbled across this iOS app a while back: https://apps.apple.com/us/app/box-breathing-meditation/id6738800198 https://apps.apple.com/us/app/box-breathing-meditation/id673... Nothing fancy but it works. Been using the watch app during stressful meetings (nobody notices you're doing breathing exercises). Has all the standard box patterns plus some custom options.