"Learning Patterns" is a free app that helps kids learn how to memorize sequences of shapes and develop critical thinking and reasoning skills. It helps students recognize and complete patterns. It has a very easy interface that is even easy for a toddler to use. This app uses two modes for learnig patterns. In total, it uses 8 different patterns and has 3 levels of difficulty for each pattern.
How it works: In the first mode, you decide the types of objects you want to use to recoginze patterns such as numbers, letters, and images. It will start with the most basic patterns and automatically increase the difficulty based on user skills. The second mode allows you to zero in on specific patterns and lets students master that pattern with a huge variety of different images.
https://itunes.apple.com/us/app/learning-patterns-help-kids/id717236674?mt=8