QDD: Student, Lesson & Payment

QDD is a bookkeeping app for private tutors — piano teachers, language tutors, anyone who teaches one-on-one and has to keep track of who paid for what. It ties three things together that usually live in three different places: the lessons you schedule, the lessons you actually taught, and the payments that came in. Every payment is matched to the lessons it covers, so when a parent asks "what do we owe?" the answer is already there. WHAT IT DOES • Students and families — one record per family, with its students, their regular lesson time, hourly price and your notes. • Calendar — recurring lessons are generated for you; reschedule, cancel or mark attendance in a tap. • Payments — log each payment as it arrives (cash, check, Zelle, Venmo, bank transfer, WeChat Pay, Alipay…) and see exactly which lessons it covers and how much is still outstanding. • Per lesson or prepaid — bill each…