"A jolly, entertaining, sweet-natured puzzler"
– Pocket Gamer: 9/10 GOLD Award

"The visuals are wonderful, the music is soothing, the controls are intuitive, and the gameplay itself is pretty challenging but on a nice, gradual curve."
– AppAdvice

"Simply put, RGB Express is a well designed puzzle game. It’s one that’s sure to keep you keen for a while to come, as well as create many head scratching opportunities."
– 148Apps

"Even early on, it’s a modest pleasure to play, but for a player who enjoys looking ahead several moves and mentally charting contingencies, the later levels are highly stimulating."
– Pocket Tactics

"Highly recommended"
– The Unofficial Apple Weblog