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Whether you are on the free tier or on Pro, there is one address and a real person behind it. Email us and we will sort it out.
Email us at
hello@tieroneprep.com
Or compose inGmailOutlookyour mail app
TierOnePrep is built and run by one engineer, so replies are personal rather than instant. Billing and account problems go to the front of the queue.
Write to hello@tieroneprep.com about any of these. Each card opens a pre-filled message in Gmail, Outlook, or your own mail app.
Charged the wrong amount, need a refund, want to cancel, or your Pro access isn't showing up after payment.
Include the email you paid with.
Email us viaGmailOutlookyour mail app
Can't log in, Google sign-in fails, or you want your account and data deleted.
Tell us the email on the account.
Email us viaGmailOutlookyour mail app
A solution, complexity analysis, or model answer looks incorrect or out of date.
Link the question page.
Email us viaGmailOutlookyour mail app
Partnerships, press, bulk or team access, or a suggestion that doesn't fit the boxes above.
Just say what's on your mind.
Email us viaGmailOutlookyour mail app
Bugs and feature requests
Use the feedback button in the bottom-right of any page. It records which page you were on, which saves a round trip.
A question you were actually asked
Submit it on the Share a Question page so the company and interview round come with it.
Cancelling Pro
You can do it yourself in the billing portal from your dashboard, instantly, with no email needed.
Email hello@tieroneprep.com. It reaches the person who builds and maintains TierOnePrep, and it is the fastest route for billing, refunds, and account problems.
You can cancel yourself at any time from your dashboard's billing portal — no email required, and no lock-in. Your Pro access continues until the end of the period you have already paid for. If you cannot reach the portal, email us and we will cancel it for you.
Pro unlocks as soon as Stripe confirms the payment, which is usually within a few seconds — reload the page. If it still hasn't appeared after a minute, email hello@tieroneprep.com from the address you paid with and we will fix it manually.
Use the feedback button in the bottom-right corner of any page — it is the quickest way, and it tags the page you were on. Email works too if you would rather include screenshots.
Yes, and we would like that. Use the Share a Question page rather than email, so it lands in the right place with the company and round attached.
The question bank, the study plans and the daily question are all one click away.