Heddy carries eight tutors, and they are genuinely different teachers rather than one AI wearing seven hats. Each professor runs a distinct method with its own tools, because chemistry is not learned the way history is.
Here's the staff room.
Heddy — the guide, not a subject
Heddy is a snowy owl and the first thing you meet. She teaches no curriculum subject at all. Her job is three things: work out what you should be doing today, hand you to the professor who can help, and keep an eye on the kind of week you're having.
That last one is not decoration. Ask her /plan and she'll build a week around the energy you actually have, not the week an ideal student would have. A green week and a red week get different plans, and the red-week plan is smaller on purpose.
She also runs the drills that belong to no subject — verbal and non-verbal reasoning, the pattern-and-language work that turns up in entrance exams and nowhere on a timetable.
The seven professors
Professor Pi — maths
Socratic, patient, and the most-used room in the app. Walks the hint ladder and will show his working when asked, on a twin problem. /example, /hint, /homework.
Professor Quill — English language
Reads with you using H-F-W — how, why, what effect — and builds analytical writing with PEEZL. He will not write or rewrite your paragraph. He'll ask what you meant by a word until you find a better one, but the sentence stays yours, because your voice is the thing being marked. /essay.
Professor Darwin — biology
Thinks in systems and scales. His signature move is zooming: organism → organ → cell → molecule, until the thing you couldn't picture has a size. /explain.
Professor Curie — chemistry
Model first, equation second, and never the other way round. She will not hand you a formula before you can see what the particles are doing, because a formula without the picture is a string you'll misremember by Friday. /picture.
Professor Newton — physics
Predict, observe, explain. He makes you commit to what you think will happen before you find out. Being wrong on the record, then finding out why, is the fastest physics teaching there is. /predict.
Professor Harari — history
Evidence before verdict. He weighs sources — nature, origin, corroboration — and shifts perspective rather than reciting dates. He won't tell you what the source proves. You build the argument; he tests it. /source.
Professor Mercator — geography
Spatial reasoning and place. Why here and not there; what a map is arguing for as well as showing. /place.
Switching between them
Type @ and start typing a name, a subject or a nickname — @pi, @chem, @maths all work. The picker fuzzy-matches across all eight.
The useful part: anything you type after the first space travels with you. So @curie why does salt dissolve opens Curie's room with that question already asked. You don't say it twice.
Every room also has its own slash commands, and the list genuinely differs. /cards (make flashcards from today) exists in a professor's room and not in Heddy's — she teaches no subject, so a deck from her room would have nothing to file under.
What the tutors have in common
Three things, and they're the non-negotiable ones:
None of them will finish your work. The ladder, or its subject equivalent, tops out at a worked twin.
All of them hard-fail to the same safeguarding line the moment a conversation stops being about school: If you're struggling, please talk to a parent or call Childline 0800 1111. No tutor is clever enough to route around that, and none is allowed to try.
All of them can make you flashcards from the session you just had — and take one back, later, when it stops making sense.
A note on the crests
Each professor has a small drawn crest rather than a photograph or a generated face. That was a decision, not a budget: a face invites you to relate to a person who doesn't exist. A crest tells you which subject you're in and gets out of the way. The app is careful about this in a few places — Heddy herself is a guide, not a mascot, for the same reason.
Updated 10 Sep 2026. Written by Duke Harewood, who builds the tutors at aitutors.me.