JSPM

Sequentially divides a period of time into multiple segments of specified duration, the last segment may be of less than the specified duration. Time periods do not contain end times, [startTime, endTime)

react native toolbar with controls components support android and IOS, you can pass the props and dataset you need to get the view as you want it. It works on diffrent devices screens from 4 inch mobile screens to 10 inch screens, the example on landscape

Simple robust library for finding lines intersections fast.