“A work of genius.”

“It is simple and hugely effective.”

“I have been using it for years to stay on track and remain focused.”

“It's an ingenious product that solves a big problem of how to cope with distractions in a wonderfully simple way.”

“It is an amazing device.”

“I would give it ten stars if I could.”

“I think it should be standard-issue for every child at every school!”

“I absolutely love it!”