Draw the system. Get staff-level feedback in 30 seconds.

Micro-challenges are focused drills around a single concept: cache-aside, async queues, database failover, and more. Most start from a scaffolded diagram, so you never face a blank canvas. You make the changes that matter, submit, and get the same dimension-scored AI review as a full challenge, in about 5 minutes.

When you submit a solution, our AI analyzes your architecture diagram and written explanation across multiple dimensions: scalability, reliability, security, performance, and trade-off awareness. It identifies specific bottlenecks, single points of failure, missing components, and architectural anti-patterns, then provides actionable suggestions. The entire process typically takes 10–30 seconds.

Yes. Every new account receives 2 evaluation credits at no cost, no credit card required. You can explore the full challenge library, build on the canvas, and submit two complete solutions before spending anything. After that, you can purchase credit packs whenever you need them. There are no subscriptions, no automatic renewals, and no recurring charges — ever.

Elo is a mathematical rating system originally designed to rank chess players. In Archlify, every AI evaluation affects your Elo score based on your performance and the difficulty of the challenge. High scores on harder challenges earn more Elo points. This gives you a single, meaningful number that reflects your true architectural ability, not just how many challenges you've attempted.

Practice Mode lets you browse the full challenge library, costs 1 credit, and is untimed. It earns XP but doesn't affect your Elo rating, ideal for learning. Interview Mode uses a blind roulette: you select a difficulty, spin, and receive a random challenge you've never seen. It costs 2 credits (charged at spin time), includes a countdown timer, and your first attempt impacts your Elo rating. It also features an AI-generated Q&A defense phase.

No. Credits you purchase never expire. Buy at your own pace and use them whenever you're ready, whether that's in a focused practice week or spread across months.

Archlify is built for software engineers at any level who want to get serious about system design: whether you're preparing for upcoming FAANG-style interviews, working toward a senior or staff promotion, or simply want a portfolio that verifiably proves your architectural ability. It's also used by hiring teams and engineering leads who want an objective way to assess candidates.

Interview Simulation offers timed challenges where you don't choose the topic. A roulette draws a random challenge, and you only see the title before starting. Requirements are revealed when the timer begins. This prevents gaming the system by practicing a challenge first, making the Elo score a true measure of your ability. Credits are charged at spin time, so there's no backing out.