What is SysRound?
SysRound runs practice system-design interviews in the browser. An AI interviewer called Alex talks with you by voice or text, and you can interrupt each other as in a real call. You draw on a shared whiteboard, write notes or code, and Alex reads the board as you go, leaves comments on the parts it wants to question, and writes agreed numbers into your notes.
Rounds last 45 or 60 minutes and follow timed phases: requirements, estimation, API and data model, high-level design, deep dives and wrap-up. You pick a level, Mid (L4/E4), Senior (L5/E5) or Staff (L6+), and the bar and the deep dives change with it.
At the end you get a scorecard on seven skills, each tied to a quote from what you said or drew, plus a replay of the whiteboard, a model answer built from your notes and a practice plan. The site shows 8 questions, from a URL shortener to Uber-style ride hailing.
How much does SysRound cost?
| Plan | Price | What you get |
|---|---|---|
| 1 round | $29 | |
| 5 rounds | $99 | |
| 12 rounds | $199 |
2 free 45-minute rounds during the beta. Packs with no subscription and no expiry: 1 round $29; 5 rounds $99; 12 rounds $199. Invites earn up to 10 more free rounds.
Is SysRound worth it?
System-design interviews are hard to rehearse alone. Reading a guide tells you what a good answer looks like, but not what it feels like to be interrupted at minute 20 and asked why you put a queue there.
SysRound gives you someone to be interrupted by. Alex, the AI interviewer, talks with you out loud, reads what you draw, and pins comments to the boxes it wants to question. The round runs on the clock, with eight minutes for requirements, four for estimates and so on, and the interviewer tells you when to move on. Choosing Senior or Staff raises the bar and changes which deep dives come up.
The scorecard is more careful than most. Each of the seven skills is graded against your level and quotes the moment it is based on. Asking for hints lowers the ceiling for that skill, and the grader scores each round three times and keeps the middle mark, which smooths out a single odd run.
The catch: you do not know who you are dealing with. The site, privacy policy and about page name no company, person or country. Your voice goes to OpenAI or Google for the live conversation and transcript; SysRound says it never stores the audio, but it does keep transcripts, whiteboards and any resume text until you ask for deletion. Rounds are used to improve the grader only when you tick a box for that round, and human reviewers can then read them. The question bank shown is 8 problems, and the site itself warns that its AI feedback can be wrong.
The money is reasonable. Two free rounds show you whether it helps; after that, 5 rounds for $99 work out at $19.80 each, against human mocks on interviewing.io from $179 a session, according to a Tough Tongue AI comparison from September 2026.
Our take: treat SysRound like a sparring partner, not a coach. A handful of rounds before an onsite is worth the price; a final read of your design from a senior engineer you know is still worth more.
Where it earns its place
A backend engineer two weeks before a senior onsite
Rehearse a full design round out loud under a real clock
Use the 2 free rounds to find the weak skill on the scorecard, then buy the 5-round pack for $99 and repeat the hard questions at Senior level.
A staff-level candidate who freezes on estimates
Practise back-of-the-envelope numbers with someone checking them
The estimation phase asks for peak requests per second, storage and read/write ratio, and Alex writes the agreed numbers into your notes, so the scorecard shows where the arithmetic slipped.
A bootcamp graduate aiming for a mid-level role
Learn what a system-design interview actually asks
Start with the URL shortener at Mid level, read the model answer built from your own notes, and use the free guides and question pages between rounds.
Before you commit
- Setup
- Sign in with an email code, pick a question and level, and start talking in the browser; no install.
- Integrations
- None published; it runs in the browser and shares scorecards by link.
- Data and privacy
- In voice rounds your browser sends audio to OpenAI or Google, who discard it after the conversation and transcript; SysRound never stores audio. Transcripts, whiteboards, notes, code and resume text are kept until you ask for deletion, done within 30 days. Rounds are used for training only if you agree for that round. Operator not named. Which AI tools train on your data?
- Cost at scale
- 12 rounds for $199, or $16.58 a round; a team or bootcamp price is not published.
- Limits
- 8 questions shown, AI system-design questions listed as coming next; for your own practice only, not for hiring; rounds are 45 or 60 minutes.
What’s good
- Live voice interviewer that reads your whiteboard and interrupts
- Scores seven skills against Mid, Senior or Staff bar with quoted evidence
- Pay per round, no subscription, rounds never expire
- Audio not stored; training use is opt-in per round
- 2 free rounds during the beta
What’s not
- Operator's name and country not published
- Only 8 questions shown
- Transcripts and whiteboards kept until you ask for deletion
- Audio processed by OpenAI or Google
- AI feedback can be wrong, by its own account
Best for
Software engineers preparing for mid, senior or staff system-design rounds who want spoken practice under time pressure.
SysRound: common questions
- Is SysRound worth it?
- SysRound is a convincing stand-in for the interviewer who keeps asking what breaks at ten times the traffic, priced per round rather than per month, from a maker that does not say who it is. We rate it 3.7 out of 5.
- How much does SysRound cost?
- 2 free 45-minute rounds during the beta. Packs with no subscription and no expiry: 1 round $29; 5 rounds $99; 12 rounds $199. Invites earn up to 10 more free rounds.
- What are the downsides of SysRound?
- Operator's name and country not published; only 8 questions shown; transcripts and whiteboards kept until you ask for deletion; audio processed by OpenAI or Google; aI feedback can be wrong, by its own account.
- Who is SysRound best for?
- Software engineers preparing for mid, senior or staff system-design rounds who want spoken practice under time pressure.
- How much does SysRound cost for a team or in production?
- 12 rounds for $199, or $16.58 a round; a team or bootcamp price is not published.
- Is SysRound safe for company data?
- In voice rounds your browser sends audio to OpenAI or Google, who discard it after the conversation and transcript; SysRound never stores audio. Transcripts, whiteboards, notes, code and resume text are kept until you ask for deletion, done within 30 days. Rounds are used for training only if you agree for that round. Operator not named.
Answers checked Nov 13, 2026.