Visit Harvard vs PrepTap

You’ve heard of Harvard University, but do you know its nearly 400-year history? On this self-guided walking tour, you'll be taken to some of the most iconic places across Harvard's campus and learn the stories behind them. Tour stops features facts, some never-before-seen images, and immersive videos! Follow along for an inside look into the University's historical and modern legacy.

Interview prep should fit into the moments you actually have. PrepTap turns algorithms and system design into focused, five-decision practice sprints made for iPhone. There is no essay box and no endless feed. Select the strongest choices, say how confident you are, and learn from immediate, option-by-option reasoning. PRACTICE WITH PURPOSE • Complete exactly five decisions in every sprint • Work across algorithms and system-design tradeoffs • See how many options each question requires • Build the habit without a keyboard LEARN THE REASONING • Understand why each selected or missed option matters • Get a concise mental model for the concept • Learn interview-ready language for explaining your judgment • Separate a confident answer from a lucky guess SEE WHAT YOU RETAIN • Follow your weekly learning rhythm • Explore a 24-concept Algorithms and System Design journey • Move concepts from New to Learning to Retained through demonstrated work • Review a clear summary after every sprint SECURE PROGRESS, READY TO RESUME Sign in with Apple is required; PrepTap does not request your Apple name or email. Progress stays protected on your device and completed practice syncs to your account. After a valid session has been restored, downloaded questions keep practice available during a temporary network outage. PrepTap is an independent educational product. It does not guarantee an interview or employment outcome and is not affiliated with any employer.