Corona sdk game optimizacion (game is almost done)

We have already developed a game, which hasnt been 100% finished since we have to tweak some stuff inside the code to make the game the smoother possible. Some animations look quite a bit rough and a bit lagged, and we cannot afford to release the game like that. This is a really simple game, it has 1 scenery and 1 background ( Casual 1 tap to play game) bid only if you have worked with corona sdk before, and make sure to send some links. P.S we have been testing the game in corona simulator but this is not accurate , and apk for android, but we are looking also for somebody capable to bring test versions to testflight for iphones 4,5,5s, etc COMMENT FREADY , otherwise you wont be taken into consideration (proof you read)