I built Professor Turtle to help students and parents in Singapore. Tuition isn't cheap, and the online platforms that cost less are mostly MCQ with a fixed question bank you'll finish in a week. Assessment books are useful, but most parents are busy and don't have the time to mark them — let alone the open-ended parts that take real effort to grade.
This app is designed to:
The short tour above. The four articles below go deeper.
Every question is generated against the Singapore curriculum — primary and secondary, all the core subjects. The model was steered using MOE teaching materials and SEAB's marking guidance, so a "factorise this quadratic" actually looks like a Sec 3 question, not a generic one from somewhere else. You pick the level, the subject, the topic, and the question type. Hit generate. You never run out of fresh practice.
Read more about the question engine →Multiple choice is easy. The hard part is reading twenty open-ended answers and giving useful feedback on each one. Professor Turtle grades the long answers using the same mark-scheme logic a real teacher would, then explains what was right, what was missed, and how to phrase it better. If the explanation isn't enough, the student can hit chat and ask for a deeper walkthrough — patient, plain English, never makes them feel dumb for asking twice.
Read more about marking + chat →Prefer having your child do hands-on writing? No problem — print the worksheet, hand them a pencil, and let them work through it the old-fashioned way. When they're done, photograph the page with your phone and upload it. The app reads the handwriting, marks the answers, and gives the kind of feedback you'd write in the margin.
Read more about handwriting & essay marking →Got an assessment book page from the tuition centre? A worksheet from school? A PDF a friend shared? Photograph it, upload it, and the app reads the questions, works through them, and marks the student's answers. You're not limited to the questions the app generated itself. If the page is in front of you, it can mark it.
Read more about worksheet upload →Honest list — most of these came up in my own house.
Buy one assessment book, finish it, buy the next. Every parent in Singapore knows this loop. With Professor Turtle there's no "next book" — the questions are generated fresh every time, on whatever topic the child is stuck on this week.
Marking 20 short answers takes 15 minutes. Marking 20 open-ended science explanations takes an hour. The app does it in seconds and tells the child what was strong and what was missing — so you don't have to.
A good tutor in Singapore is real money. This isn't a replacement for a great tutor — but it is a way to keep the practice going between lessons, at any hour, without scheduling or paying per session.
The app doesn't sleep. If your child sits down to revise after dinner and gets stuck, the chat tutor is right there. It's patient, it never makes them feel dumb for asking twice, and it walks them through the working step by step.
Most digital practice tools ignore the stuff kids actually write by hand — compositions, comprehension answers, science explanations. We didn't. Photograph it and it gets marked the same way.
Singapore mark schemes are subtle. The AI was tuned against SEAB's marking guidance, so it knows the difference between "got the method" and "got the answer", and it gives marks the way an actual marker would.
Phone. MRT. Kitchen table. Anywhere there's a screen and a few dead minutes.
A quick set of 5 questions on the topic they're revising. Done before the next stop.
Dinner's late, the kid's bored — pull out the phone and burn ten minutes productively.
One quick comprehension or a couple of math problems before bed. No setup, no printing.
That's the whole point. Practice is a habit, and habits don't only happen at a desk between 7pm and 9pm. The app loads fast on a phone, doesn't need a login each time, and the questions are short enough to do in a sitting of any size.
Pick a topic your child is working on, generate a set of questions, and let them try one or two. You don't need to commit to anything — and yes, there's a free daily quota so you can actually try it properly.
Open the app →