Why PostExo? You are having difficulty facing a Homework assignment, a Maths or Physics - Chemistry or Other exercise, you do not want to pay a teacher for 2 hours at 40 € for a Homework assignment that requires ONLY a few minutes. Besides, you want help now, right away ... ... we created PostExo for you. What is PostExo? PostExo is an application that you can access by phone, tablet or PC / Computer How to use PostExo? It's simple, you take a picture of your exercise, you post it with your contact details, in a few minutes a teacher calls you on the number you will have sent us and it starts !!! Once finished, you will evaluate your teacher by giving him a rating of 5 stars and you will only pay for the time spent,