Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.
CalcKey - Calculator app for iMessage
unitMeasure - A sleek unit calculator for android
Stripe Atlas Taxes - Help file your business taxes
Unit Converter - It's More easy to covert the UNITS now with the APP
Evaluator - A simple calculator app for macOS and Windows