What calculator does your child need for GCSE, iGCSE and A-Level maths?

The hard part of GCSE maths isn't the lessons. It's the Tuesday evening when a past-paper question won't come out, it's gone nine, and nobody in the house has done trigonometry since 1998. At that point the options are a tutor at £30 an hour, your own rusty working, or the phone. And most parents already know what the phone does to a homework hour once it's out on the table.

We built GeniCalc for that evening.

An AI calculator made for revision

GeniCalc is a full scientific calculator, 550 functions, covering the same ground as the Casio in your child's pencil case, with a small camera on the back. Point the camera at the question and the working appears on the calculator's own screen: each step in order, with the reasoning written out. The screen holds about 160 words at a time, enough for a complete worked solution, and the battery runs about a day with the AI on.

Steps rather than answers is the whole design. GCSE and A-Level mark schemes give most of their credit for method, not the final line. Copying an answer earns a mark or two at best. Reading the working, finding where your own attempt went wrong, then doing the question again without help: that's revision, and it's what the machine pushes a student towards.

No phone in the loop

GeniCalc connects through its own SIM, so the phone can stay in another room. There's no browser on it and no messaging; it does maths. Schools have spent the last couple of years getting phones out of the school day, with government guidance behind them, and the same reasoning applies at the kitchen table. Apps like Photomath are decent software with one problem they can't fix: they run on the most distracting object in the house. If you're weighing GeniCalc against the apps, we've written a side-by-side comparison.

What parents can control

Two things, mainly. The AI sits behind a password, so you can lock the calculator back into an ordinary scientific one, for school nights or for good, and unlock it when it suits you. And because every solution appears step by step, you can see at a glance how it's being used. Checking a method after a real attempt looks nothing like photographing the whole exercise sheet.

Exam day

GeniCalc has a camera and a connection, so it isn't allowed in the exam hall, whatever mode it's in. Your school will name the approved basic model for the exam itself; buy that one as well, write a name on it, and that's sorted.

Price and what's included

GeniCalc is £155 in the pre-sale. The price rises to £199 on 1 October, or as soon as the first 500 units are gone, whichever comes first. Orders dispatch from 1 November 2026. Six months of the AI service are included, counted from the day the calculator is first switched on; after that it's £21 a month or £189 a year, and if you stop the subscription you still own a full scientific calculator. You add your own nano SIM for the connection. Delivery is free across the UK and the EU, there's a two-year guarantee, and returns are accepted for 14 days.

Schools and tutoring centres ordering ten or more units get a direct quote. With the AI locked, it's a straightforward classroom calculator.

So if you came here searching for the best calculator for GCSE, the answer is two of them: the approved model your school names for exam day, and the one that gets the work done every evening before it. The pre-sale is open now.