--- title: "Why a tutor that shows you, not an answer app | DuckyHelper" url: "https://duckyhelper.com/why-duckyhelper/" description: "Answer apps can raise practice grades and lower test scores. DuckyHelper is built the other way: it shows you the steps, gives hints first and checks your try." updated: "2026-10-09" --- Why DuckyHelper # Tried answer apps? This is different. An answer app gives you the answer, and you move on without learning the step. A study of high school math found that students with unguarded AI help did better on practice and worse on the exam. DuckyHelper is built the other way: it talks with you, shows you the steps, gives a hint before the answer and checks your own try. [Download for Mac](https://duckyhelper.com/download/)[Meet Eddy](https://duckyhelper.com/eddy/) The problem ## Getting the answer is not learning it In a field experiment with about a thousand high school students, those given plain GPT-4 for math practice did much better while they practised and 17% worse on the exam once it was taken away. A version that gave hints instead of answers did not do that harm. The answer felt like progress; the test showed it wasn't. - Bastani et al. 2025, Proceedings of the National Academy of Sciences - The finding that shaped DuckyHelper: guide, don't hand over answers [Read the research](https://duckyhelper.com/research/) ## An answer app and a tutor that shows you | | An answer app | DuckyHelper | | --- | --- | --- | | When you are stuck | Gives you the answer | Gives a nudge, then a bigger hint; the answer comes last | | How it explains | A block of text | Out loud, while it draws: on a blackboard, a labelled picture, or on your own screen on a Mac | | Your homework | Solves it for you | Reads the question with you, writes a short hint beside it and checks what you wrote | | After the answer | You move on | A quick check, and what you missed comes back as a flashcard before you forget it | | Over time | Starts from zero every time | Remembers what you studied and where you slipped, with switches to turn that off | Two kinds of study help, not two products. Product comparisons are on the compare pages. How it teaches ## Steps you can see ### Hints, one rung at a time In the Mac app, press Hint: a nudge, a bigger hint, the worked step, and the answer last. ### Show while it talks Eddy writes on a blackboard in time with its voice; on a Mac, Ducky circles the exact line on your screen. ### Your turn After an explanation, Eddy hands you a your-turn on a small whiteboard and checks it. ### Practice that comes back Quizzes tell you why an answer is wrong, and missed questions return as flashcards on a schedule. ## See it in action Reading it isn't knowing it: quiz me, answer any way you like, press Hint when stuck, and the one you missed comes back. Mac app, narrated. ## Built and trained to teach DuckyHelper is trained on 1,000,000+ tutoring examples and built on 100+ learning-science papers: one-on-one tutoring, worked examples, retrieval practice, spaced practice and explaining it back. 1,000,000+ tutoring examples 100+ learning-science papers [How it was built](https://duckyhelper.com/research/) ## How to use it [Guide: Quizzes and hints](https://docs.duckyhelper.com/study/quizzes/) ## Frequently asked questions ### Is DuckyHelper an AI that teaches instead of giving answers? Yes. It talks you through the steps and shows them while it talks. In the Mac app the Hint button gives a nudge, then a bigger hint, then the worked step, and the answer last. On your homework file, Eddy gives hints first and checks what you wrote instead of saying the answer. ### Will it ever just tell me the answer? When you have tried and want to check, yes: the last rung of the hint ladder is the answer, and a quiz shows the right answer with why. What it avoids is doing your homework for you before you have tried, because that is the help that hurts test scores. ### What does the research say about AI and learning? A 2025 field experiment in high school math, published in PNAS, found that unguarded GPT-4 help raised practice grades and lowered exam grades by 17%, while a tutor version that gave hints did not cause that harm. DuckyHelper's research pages summarize this and the 100+ papers behind its design. ### Is it a ChatGPT alternative for studying? It is a different kind of tool: a voice tutor that shows you, rather than a chat window that writes answers. You talk, and it explains with a blackboard, pictures or marks on your screen, then checks your try. [DuckyHelper vs ChatGPT](https://duckyhelper.com/compare/duckyhelper-vs-chatgpt/) puts the two side by side. ### Does it work for any subject? Yes. Math gets worked steps and graphs, science gets simulations and labelled pictures, history gets maps and timelines, languages get pronunciation checks, and code runs line by line so you can see what it does. Whatever the subject, it asks you to do the step. ## Sources 1. [Bastani, H., Bastani, O., Sungu, A., Ge, H., Kabakcı, Ö., and Mariman, R. (2025). Generative AI without guardrails can harm learning: Evidence from high school mathematics. Proceedings of the National Academy of Sciences](https://doi.org/10.1073/pnas.2422633122) (accessed 2026-10-09) ## Keep reading ### DuckyHelper compared with other AI tutors and study apps Fair, sourced comparisons of DuckyHelper with Khanmigo, ChatGPT, Photomath, Gemini and Clicky, each one saying plainly where the other tool is the better pick. ### Every DuckyHelper feature: what it does, where it runs, and a short film of each What DuckyHelper for Mac does: Eddy teaches out loud on a blackboard, and Ducky sees your screen, draws on it and walks you through your own apps. ### Research: a tutor built on learning science How DuckyHelper's tutor is built to teach: the model, a library of 100+ learning-science papers, the principles it follows and our white papers. ### Plans and credits: what the Free plan includes and what each paid plan adds Compare DuckyHelper's Free, Plus, Pro and Unlimited plans: how much live voice each one gives, how credits and top-ups work, and how to cancel. ### It asks back and gives the next hint before an answer, so you do the thinking DuckyHelper asks back and gives the next hint before it gives an answer, so you do the thinking. Why that matters, and how it works on a Mac and in Eddy. ### A model built to teach DuckyHelper's tutor is trained on 1,000,000+ tutoring examples and inspired by 100+ learning-science papers: a tutor, not an answer machine. ## Learn the step, not just the answer Talk to Eddy in its own tab, or press fn on your Mac. [Download for Mac](https://duckyhelper.com/download/) [See what it does](https://duckyhelper.com/features/) The Mac app needs Apple silicon and macOS 14 Sonoma or later. There is no Chromebook, Windows or web version right now.