Fire Trucks Differences

This is a puzzle game where you need to find the differences between two images, that is at first look the same, but there is a difference between them. The image is with fire trucks and in each image, there are seven differences. Find them all for a given time to win the level and to go to the next one. You can play this game in 10 levels. Tap on the left or right image at the place where you think there are some differences.