Hello Interview vs Mockich
Hello Interview is a learning library for software engineers, strongest in system design, with AI mock system design interviews sold as credits. Mockich is a spoken mock interview across coding, system design, behavioral and track-specific rounds for software, data science, machine learning and quant developer roles. If you need to learn system design, start with Hello Interview’s material; if you need repetitions answering out loud across more round types, Mockich covers more of them.
What Hello Interview is, as of November 2026
Hello Interview publishes free articles and videos and sells Premium access to courses in system design, low-level design, coding, AI-enabled coding and behavioral interviews, plus Guided Practice problems, a question bank reported by candidates and an AI tutor. Premium is sold as one-time passes that do not auto-renew: $47 for a month, $89 for a year or $299 for lifetime access, shown at the time as a limited-time discount from $59, $119 and $399.
Its Live Practice is an AI mock system design interview: you talk through a design on a shared whiteboard, then get a hire or no-hire call for your target level, a written report and a replay. Interviews are 35 minutes and sold in packs of 1, 3 or 6, listed at $25, $65 and $115 and shown discounted to $10, $26 and $46; Premium includes 1, 2 or 10 of them depending on the pass. The page offers a money-back guarantee on interview credits.
Hello Interview ended its human mock interview and mentorship programs on May 31, 2026, and says its courses and practice tools continue.
Side by side
| Hello Interview | Mockich | |
|---|---|---|
| What it is | Courses, articles, videos and AI practice for software engineering interviews | Mock interviews you answer out loud, with a report after each round |
| Live mock format | AI system design interview, spoken, on a shared whiteboard | A live spoken interview in the browser with Vera, an AI interviewer, on a real clock |
| Rounds with a live mock | System design | Coding, fundamentals, system design and behavioral for every role, probability for quant, and a full loop with a recruiter screen and a hiring manager conversation |
| Roles | Software engineers and managers; ML system design among its courses | Software Engineering, Data Science, Machine Learning and Quant Developer (C++), at Regular and Lead level |
| Feedback | A hire or no-hire call for your level, scores for each competency, coaching points that quote what you said, and a replay | A written report after every round: each skill scored against the bar for your level, with quotes of what you said and when |
| Learning material | Large course and article library, videos, Guided Practice, AI tutor | Public practice pages, guides and example reports; no video course |
| Price | Premium from $47 for one month’s access (one-time, discounted); AI interviews from $10 each (discounted) | Free to start |
Where Hello Interview is stronger
- Depth of system design teaching: written breakdowns, videos and step-by-step Guided Practice.
- Low-level design and AI-enabled coding courses, which Mockich does not offer.
- A large, candidate-reported question bank and a community section with candidate stories.
- A replay of your AI interview with board, transcript and audio in sync, and coaching points placed on the timeline.
Where Mockich is different
- Spoken mock rounds beyond system design: coding with a runnable editor, behavioral, fundamentals and, for quant, probability.
- Data science, machine learning and quant developer (C++) tracks with their own rounds.
- A full loop for one role, from a recruiter screen through the technical rounds to a hiring manager conversation and a debrief.
- Free to start.
Which one to choose
Choose Hello Interview if
- You are learning system design or low-level design and want a structured course.
- You want an AI system design mock that gives a hire or no-hire call for your level.
Choose Mockich if
- You already know the material and need repetitions saying it out loud.
- You are preparing for data science, ML or quant developer interviews, or for coding and behavioral rounds as well as system design.
Many candidates will use both: learn system design from the written breakdowns, then practise the other rounds of the loop out loud, or a loop for a data science, ML or quant role.
Questions
Does Hello Interview still offer mock interviews with people?
Not as of November 2026. Its own page says the human mock interview and mentorship programs ended on May 31, 2026; the AI Live Practice continues.
Does Mockich teach system design?
Mockich has free guides to how system design rounds work, but no course. It is built for practising the round once you know the material.
Is either one free?
Hello Interview has free articles and videos; its AI interviews and Premium are paid. Mockich is free to start.
See how a Mockich round runs
Read an example report to see the feedback before you sign up, or start a round for free.
Practice pages
Other comparisons
Sources
We read only Hello Interview’s own public pages, on the dates shown, and did not buy a plan or test its quality. Prices and features change; check the linked pages before you decide.
- [1] Hello Interview home page, checked 3 November 2026
- [2] Hello Interview Premium pricing, checked 3 November 2026
- [3] Hello Interview Live Practice, checked 3 November 2026
- [4] Hello Interview: Mock Interviews and Mentorship have ended, checked 3 November 2026
Product and company names are trademarks of their owners and are used here only to identify their services. Mockich is not affiliated with, endorsed by or sponsored by any of them.