Yes, for as long as you like. The first three lessons of every module are free, with no account. A free account adds Practice, Projects and Interview, and saves your progress on any device.
Every lesson in every module, across AI and quant engineering. Every interview round for every role. And unlimited practice: more sets, any topic on its own, and timed runs.
Whichever way you'd like to pay. Every plan opens exactly the same things. Monthly is the easiest to stop, annual costs the least per month, and lifetime is a single payment that never renews.
No. Pro costs less where incomes are lower, and this page shows the price for the country you're in. You pay in your own currency where checkout supports it, and in US dollars where it doesn't.
Yes. In Settings, choose Change or cancel and tell us which plan you'd like. We'll move you over.
Any time. In Settings, choose Change or cancel, or write to [email protected]. Pro stays open until the end of the period you've paid for, and your progress stays in your account after that.
Yes. Email [email protected] within 30 days of paying and we'll refund the full amount. You don't need to give a reason.
Yes. Many companies cover it from a learning budget, and checkout gives you a receipt to submit.
Yes. Email [email protected] with how many people need access and we'll set it up.
Something else? Write to us at [email protected]