Simpiens was a startup of online courses in portuguese. I was responsible for the design and application development.
The trainers could create courses on the platform that were then purchased by interested users. Payment could be made by bank transfer, ATM or via PayPal (which also allows credit card). In the last two cases the activation of the course registration was immediate.
The courses was composed of video lessons and had no date for completion, which allowed the students to take the course at the pace that was more convenient for them. In the course page the user could also view the lessons that he had already completed so he can easily resume where he left off.