FREE TO USE: You can use the free for TON169 APP to snap, crop, rotate, filter, adjust color and contrast, and then share on social media. APPLICABLE: Smartphone film scanner supports 135mm and 35mm size film negatives or slides, no more complicated operation and expensive cost. EASY TO USE: You just insert the slide or film into the tray, turn on the built in LED backlight, place the smartphone lens over the hole, and click to shoot. NOTE ON USE: TON169 mobile film scanner allows you to convert old 35mm and 135mm films and slides on your smartphone. The quality of the photos will be limited by the resolution of your phone's camera. FUN GIFT: Smartphone film negative slide scanner can be used as a daily work tool, but also a fun toy for kids and a great parents.