LoyaltyHarbour Image Optimizer

Easy app to use, does what it says by optimizing your pics within a set range and so far I'm happy with the results. I've used other optimizers so lots of my pics were already optimized and this app found an additional 1% BUT when I used it against good quality pics that weren't optimized, it save up to 90% in space, keeping good quality. If you don't like the results, just roll back. Thumbs up!