GCSE maths
Practice that
never runs out.
Every topic broken into skills, five fresh questions a day, and real papers under exam conditions. Come back to a skill and the numbers have changed — so you're practising it, not remembering it.
Try it now
Marked exactly as it is inside the portal
The right answer shown either way, and the working spelled out underneath. No account, nothing to fill in. Finished? Go again — the numbers will be different.
The diagram shows triangle . is a straight line.
the size of angle : the size of angle
Work out the size of angle .
(The diagram is not accurately drawn.)[4 marks]
Skills, not chapters
Every module opens into its skills
One circle per subtopic, ticked when you've finished it — and the ∞ circle is endless mixed practice across the whole module, for when the ticks are done and you want to stay sharp.
XP worth competing over
Every right answer earns XP
XP adds up into levels, and the leaderboard runs a weekly table and a monthly one — so a big week counts, even against students who have been here far longer.
Five a day
The same five for everyone, every day
Everyone gets the same five questions each day, with your own numbers in them. Get one wrong and it comes back with fresh numbers until you crack it — finish all five and your streak lives on.
Founder and tutor
Krish
Why I built it
I built KRISH.one because I kept teaching the same things to different students, and kept seeing the same gaps behind them. Practice works when it is aimed at what you actually keep getting wrong — not at whatever comes next in the textbook.
Qualifications
- Degree
First-Class Honours (78%) · Year 1
University College London (UCL)
MEng Mechanical Engineering with Business Finance
- A-levels
A*A*A
Newham Collegiate Sixth Form Centre (The NCS)
Maths, Physics, Further Maths
- GCSEs
9 9 9 9 9 9 9 8 8 8 8
Ilford County Grammar School
Maths, Further Maths, Physics, Biology, Chemistry, Computer Science, Design & Technology, English Language, English Literature, History, Philosophy & Ethics
Pricing
One module free, for as long as you like
Free
£0always
- Module 1, with every subtopic
- Endless mixed practice across Module 1
- Every answer marked, with the working shown
- XP, levels and the leaderboard
- Five questions a day, with streaks
- Live Zoom lessons and exam papers
Premium
£15£10per week
For your first 3 months, then £15 a week.
- All eighteen modules and every subtopic
- Endless mixed practice in every module
- Five questions every day, with streaks
- Two hours of live Zoom lessons a week
- Timed exam papers, marked automatically
- Every exam answer explained, once you hand in
Do I need a card to start?
No. The Free plan asks for no card and no payment details, and there is nothing to cancel. Premium is paid for inside the portal, only if and when you choose it.
How does the billing work?
Premium is £10 a week for your first 3 months, then £15 a week. Payments are taken by Stripe — we never see or store card details.
How do I cancel?
Any time. You keep Premium until the end of the period you've already paid for, you aren't charged again, and your account and all its progress carry on — on the Free plan.
What if a payment fails?
Your account simply drops back to Free. Nothing is deleted, and nothing is lost.