I built ADIOffice after seeing first-hand how much of a driving instructor's week goes on admin. Bookings lived in a paper diary or a phone, payments were tracked from memory, and the signed EDT logbooks ended up in a big box. Most instructors I spoke to couldn't say what they really made per lesson once fuel, insurance and the car were paid for.
On top of that came the constant juggling: texting students reminders, and making sure the slot you offered was actually still free.
ADIOffice is my answer: one place that gives you a clear view of your business, without asking you to change the way you work. I build it together with instructors who use it every day, and you can always reach me directly.