Instruction in abacus can be confusing for students and in some cases teachers. This app is clear and concise giving the user the ability to control how much feedback is given to learner. The step by step instruction is very helpful to a beginner learner and a good check for someone who needs an occasional prompt. Future additions to the program in other areas of math would be awesome! I really enjoy this app and would strongly urge other TVI's, parents, other teachers to use this app for a child with visual impairements or a child struggling in math.