Today’s free iPhone app at FreeAppADay.com is Photo Spot, from Nexx Studio.
Photo Spot is a “spot-the-differences” title that contains over 120 sets of images, each of which contain four differences. You’ll need to find all four differences between the two pictures before the countdown timer reaches zero in order to pass the level and move on.
You can play your own music as a soundtrack to the game, and as you go, you’ll earn a score that will be tracked via the game’s global high score charts. According to the developer, Photo Spot has been downloaded over 250,000 times – if you’d like to join the crowd, make sure to head over to iTunes and download Photo Spot while it’s free today.