EnterviewGo
Paid
Job candidates needing real-time interview prompts
Prepd
Freemium
System design interviews fail candidates not because they can't think, but because they've never practiced drawing under time pressure with someone telling them where the design breaks.
Similar tools
EnterviewGoPaidThe app runs locally on macOS and Windows, captures system audio only — the vendor states your…
Hiring GenieFreemiumThe tool automates the screening layer — candidates complete structured video interviews on…
LiftmyCV 3.0FreemiumThe tool's AI agent scans over 1.6 million job listings across 12+ boards and ATS platforms…
ResumeCommandFreemiumThe tool ingests your full career history once into a master profile, then maps it against any…
Summary
Prepd puts you at an interactive whiteboard with timed mock interviews and instant feedback on gaps — missing cache layers, weak failure handling, scaling bottlenecks — the exact notes a real interviewer would scribble. The vendor describes it as a gym: daily 10-minute sessions that build and score specific skills over time, with scorecards tracking where you're weak. The free tier exists but the vendor page makes clear that exercise volume and interview count are gated behind paid access, so candidates preparing seriously will hit the ceiling fast. There is no API and no self-hosted option, which means your practice data and session history live entirely on Prepd's infrastructure. Engineers who want to export results or plug scores into their own tracking workflow have precious little to work with.
Bottom line: Pick this if you have four weeks before an interview loop and need structured daily reps with scored feedback — skip it if you want to drill custom scenarios from your own job description, because bringing your own questions is a paid-only feature.
Pricing Plans
Subscription- Free Tier
- 7 exercises / month
Curious
Free
7 exercises / month
- 7 exercises / month
- No interviews
- No BYOQ
Starter
$10per month
Full drill library for steady practice
- 50 exercises / month
- Skill tracking
Serious
$18per month
Drills plus live AI mock interviews
- 100 exercises / month
- 12 interviews / month
- 10 BYOQ questions / month
- Full analytics
Focused
$30per month
More interviews and your own questions
- 160 exercises / month
- 20 interviews / month
- 20 BYOQ questions / month
- Advanced AI feedback
Relentless
$60per month
Most practice for crunch time
- 300 exercises / month
- 35 interviews / month
- 30 BYOQ questions / month
- Priority support
View full pricing on prepd.tech →
Pricing may have changed since last verified. Check the official site for current plans.
Find your fit
Before you choose Prepd
More options in HR & Recruiting. Compare pricing, platforms, and features side by side.
Hiring Genie
Freemium
Small to scaling recruitment teams
Pros
- Instant feedback on design gaps during a timed session, so you find out your architecture is missing a cache layer before a real interviewer does — not after the rejection email.
- Skill-score analytics that accumulate across sessions, which means you can see whether distributed systems is actually improving or whether you're just getting better at the problems you already understood.
- Timed mock interview format that mirrors real interview pressure, so the first time you're drawing under a clock isn't the actual interview.
- Structured daily exercises scoped to 10-minute sessions, which makes consistent practice possible without blocking a full hour — the format candidates who keep skipping longer study blocks actually complete.
Cons
- The free tier caps exercise and interview volume at a level that runs out before a full preparation cycle does — candidates who need daily reps for several weeks hit the wall and either upgrade or stop practicing.
- Bringing your own questions is locked behind paid access, so engineers targeting specific companies by drilling known design topics from public interview reports cannot do that without paying — at which point some candidates move to peer-practice communities like Exponent or Interviewing.io where custom scenarios are table-stakes.
- No API and no data export means progress scores and session history are unextractable — study groups or bootcamps that want to track multiple candidates against a shared rubric have no path to do that inside or outside the tool.
About
- Platforms
- Web
- API Available
- No
- Self-Hosted
- No
- Last Updated
- September 25, 2026
Best For
Who it's for
- Software engineers preparing for system design interviews
- Daily 10-minute practice sessions
- Users seeking timed mock interviews with scorecards
What it does well
- Practicing system design interviews
- Drawing and refining architectures for real production systems
- Receiving instant feedback on design gaps and scaling issues
- Tracking progress with skill scores and analytics
Frequently Asked Questions
- Is Prepd free?
- Prepd offers a free option alongside paid upgrades. Check the current allowances and terms before choosing a plan.
- What platforms does Prepd support?
- Prepd is available on: Web.
System design interviews fail candidates not because they can’t think, but because they’ve never practiced drawing under time pressure with someone telling them where the design breaks.
Prepd places users at an interactive whiteboard for timed mock interviews. It delivers instant feedback on gaps such as missing cache layers, weak failure handling, and scaling bottlenecks. The vendor describes the service as a gym that delivers daily 10-minute sessions, builds skills over time, and produces scorecards that track weak areas. The free tier allows 7 exercises per month; higher volume and interview counts require a paid subscription. There is no API and no self-hosted option.
Use cases
Practicing system design interviews. Drawing and refining architectures for real production systems. Receiving instant feedback on design gaps and scaling issues. Tracking progress with skill scores and analytics.
Pros and cons
Instant feedback arrives during the timed session so gaps surface before a real interview. Skill-score analytics accumulate across sessions. The format mirrors real interview pressure and the daily exercises fit into short blocks. The free tier caps volume before a full preparation cycle finishes. Bringing custom questions is locked behind paid access. No API or data export is available.
Who it is for / who should skip it
Best for software engineers who want daily 10-minute practice sessions and timed mock interviews with scorecards. Skip it if you need to import your own company-specific questions without paying or if you require data export and API access.
Contribute
- Work on Prepd? Claim this listing.
- Embed a badge for your README or site.
Sign in to rate this tool or suggest an edit.