Simple but needs ability to swipe between lists Heavily relies on a hamburger menu & needs ability to swipe between counters. Other improvements could include negative counting  grouping of counters  counter interactions (e.g.  2 counters can be linked & a rule set so that when the first counter reaches 10  the second counter increments by 1). Otherwise  this is a good simple material design app with multiple counters & even a dark mode!
December 20 2016