System Design Prepgo pro

Pro

Every question, every flow, every deep dive, plus everything added later. Design a URL Shortener stays free for everyone.

Monthly

$49 / month

Cancel any time. Good for a focused interview loop.

  • All 11 questions and every future one
  • Practice mode with graded flows and estimates
  • Session history synced across devices
Best value

Annual

$79 / year

Less than two months of monthly. For an ongoing prep habit.

  • All 11 questions and every future one
  • Practice mode with graded flows and estimates
  • Session history synced across devices

Lifetime

$237 once

Three years of annual, paid once. Keep every question added later.

  • All 11 questions and every future one
  • Practice mode with graded flows and estimates
  • Session history synced across devices

Payments are handled by Stripe. Subscriptions can be cancelled from the billing portal at any time. See the Terms for the refund policy.