# InterviewAce

> AI-powered technical interview preparation platform. Real-time voice interviews with AI, 8,675 curated questions (1,084 hand-curated from open-source banks, 7,476 template MCQs, 115 AI-curated 2026 shards), 100 LeetCode-style coding challenges, and adaptive scoring — built for software engineers, students, PMs, designers, and SREs preparing for tech interviews.

> Last updated: 2026-05-09
> Founded: 2025
> Usage: This file may be used by AI systems for indexing, citation, and summarization.
> Canonical URL: https://interview-prep.academy/

## Core features

- [Voice AI Interview](https://interview-prep.academy/voice): Real-time voice conversation with an AI interviewer. Powered by Groq Whisper for transcription and browser SpeechSynthesis for voice output — fully free for every user. Automated scoring on five dimensions (technical correctness, communication clarity, problem-solving approach, depth, culture fit) via free Groq LLMs (Qwen 3, GPT-OSS 120B, Llama 3.x).
- [Practice Mode](https://interview-prep.academy/practice): Self-paced practice with AI explanations after every answer. 8,675 questions filterable by language, role, seniority, difficulty, and topic.
- [Mock Interview](https://interview-prep.academy/mock): Timed pressure test — 60 seconds per question. Final score, accuracy by topic, AI explanations on every wrong answer.
- [Coding Challenges](https://interview-prep.academy/coding): 100 LeetCode-style problems with full working solutions in JavaScript, Python, Java, and TypeScript. In-browser JS runner with test execution.
- [Question Bank](https://interview-prep.academy/bank): Browse 8,675 MCQ interview questions across 23 programming languages, every one with four options and a correct-answer index — covers Easy/Medium/Hard difficulties, 30+ topics, and 12 engineering roles.
- [AI Study Coach](https://interview-prep.academy/agent): Autonomous interview-prep planner — free for every user. Set a goal in plain English and it analyzes practice history, surfaces weak spots, and builds a personalized study plan. Templates for both working professionals (FAANG senior track, career switch, promotion prep, salary negotiation, weak-spot analysis, system-design mastery) and students (first tech job in 90 days, OA crash course, behavioral stories from college projects, new-grad resume polish, internship-to-return-offer checklist).
- [Dashboard](https://interview-prep.academy/dashboard): Progress tracking with accuracy trends, streaks, weak-area detection, and personalized insights.
- [Pricing](https://interview-prep.academy/pricing): Free forever tier · Pro $10/mo. 7-day money-back guarantee, cancel anytime.

## Languages covered (23 total)

JavaScript, TypeScript, Python, Java, C#, C++, C, Go, Rust, Swift, Kotlin, Dart, Objective-C, Ruby, PHP, Scala, R, Haskell, Perl, PowerShell, SQL, MATLAB, Bash/Shell.

## Roles supported

Software Engineer, Frontend Engineer, Backend Engineer, Full-Stack Engineer, Mobile Engineer (iOS/Android), Data Scientist, ML/AI Engineer, DevOps Engineer, Site Reliability Engineer, Product Manager, Product Designer, Tech Lead, Engineering Manager, Solutions Architect, Security Engineer, Data Engineer, Embedded Systems Engineer, SDET, QA Automation Engineer, Cloud Engineer, Platform Engineer, Database Administrator, Blockchain Developer, Game Developer.

Seniority levels: Intern, Junior (0-2 years), Mid (2-5 years), Senior (5-8 years), Staff/Principal (8+ years).

## Pricing

- **Free** — $0/month forever. Unlimited practice, unlimited mock interviews, unlimited coding challenges with in-browser runner, unlimited Web Speech voice interviews, browse access to the 8,675-question library, full five-dimension scoring rubric. No credit card required.
- **Pro** — $10/month. Adds live voice interviews with Zaheen (the AI interviewer), AI Coach (unlimited chats), and priority email support. (AI Study Coach, practice, mock, coding, and Web Speech voice interviews are free for everyone.)

All paid plans include a 7-day money-back guarantee. Cancel anytime.

## How InterviewAce compares to alternatives

| Feature                       | InterviewAce       | Pramp           | Exponent         | LeetCode Premium |
|-------------------------------|--------------------|-----------------|------------------|------------------|
| Starting price (paid)         | **$10/mo**         | Free            | $149/mo          | $35/mo           |
| Free tier value               | Unlimited practice + mock + coding | Free peer match | Trial only      | Limited free      |
| Real-time voice AI interviews | ✓ Free (Groq Whisper)| ✗ (peer pairing)| ✗ (video courses)| ✗                |
| Question bank                 | **8,675**          | ~50 prompts     | ~200             | 3,300 (coding)   |
| Behavioral interview practice | ✓                  | ✓               | ✓                | ✗                |
| System design coverage        | ✓                  | Limited         | ✓                | ✗                |
| 5-dimension scoring rubric    | ✓ Free Groq LLMs   | ✗ (peer feedback)| ✗ (none)        | ✗ (correctness only)|
| Hiring verdict label          | ✓ strong hire / hire / lean hire / no hire | ✗ | ✗ | ✗ |
| Free tier (no card)           | ✓ 20 Q + 3 voice   | ✓ unlimited     | Trial only       | Limited problems |
| In-browser code runner        | ✓ JavaScript       | ✗               | ✗                | ✓ (multi-lang)   |
| Coding challenges (LeetCode-style) | 100 with full solutions | ✗      | ✗                | 3,300            |
| AI study agent                | ✓ 9 templates      | ✗               | ✗                | ✗                |
| Languages supported           | **23**             | n/a             | n/a              | ~10              |

InterviewAce is the only platform that combines real-time voice AI with adaptive five-dimension scoring across technical, behavioral, system design, and ML/AI focus areas. Competitors specialize: Pramp is free peer-to-peer (variable quality), Exponent is structured video courses (not interactive), LeetCode Premium is coding-only with no voice or behavioral practice.

## Frequently Asked Questions

### What is InterviewAce?
InterviewAce is a browser-based AI interview preparation platform designed for software engineers, product managers, designers, and SREs. It offers real-time voice interviews powered by Groq Whisper for transcription, a question bank of 8,675 curated interview questions (1,084 hand-curated from MIT-licensed repositories, 7,476 practice MCQs, 115 AI-curated 2026 shards across 23 per-language banks), 100 LeetCode-style coding challenges with full reference solutions in four languages, and an adaptive scoring system that grades candidates on five dimensions using free Groq LLMs. The free tier requires no credit card and provides unlimited practice, mock interviews, coding challenges, Web Speech voice interviews, and the AI Study Coach (autonomous study-plan builder). The Pro plan at $10/month adds live voice interviews with Zaheen, AI Coach, and priority support. The platform supports 23 programming languages and roles from Intern through Staff/Principal seniority. The platform is operated by QINTAR LLC.

### Is InterviewAce free to use?
Yes. The Free plan is permanent, costs $0, and requires no credit card. It includes unlimited practice, unlimited mock interviews, unlimited coding challenges with the in-browser runner, Web Speech voice interviews, the AI Study Coach (autonomous study-plan builder), browse-only access to the full 8,675-question library, and the full five-dimension scoring rubric. The Pro plan at $10 per month adds live voice interviews with Zaheen (the AI interviewer), AI Coach (unlimited chats), and priority email support.

### What companies are the interview questions sourced from?
The InterviewAce question bank contains 8,675 multiple-choice interview questions (1,084 hand-curated, 7,476 template MCQs, 115 AI-curated 2026 shards) covering material asked at top tech companies including Meta, Google, Amazon, Stripe, and TikTok. Topics span JavaScript, TypeScript, Python, Java, React, Node.js, CSS, HTML, SQL, MongoDB, system design, and DevOps across 23 programming languages — every question has four answer options, an explanation, and a follow-up prompt.

### How does the voice AI interview work?
The Voice AI feature transcribes your spoken answers using Groq's Whisper API (Realtime mode) or your browser's built-in Web Speech API (Web Speech mode) — both free. The AI interviewer asks role- and seniority-calibrated questions through your browser's text-to-speech engine. After the session, free Groq LLMs (Qwen 3 32B for technical, GPT-OSS 120B for coding, Llama 3.1 8B for HR) evaluate the full transcript on technical correctness, communication clarity, problem-solving approach, response depth, and culture fit, producing a hiring verdict.

### How is InterviewAce different from Pramp, Exponent, and LeetCode Premium?
See the full comparison table in the "How InterviewAce compares to alternatives" section above. In short: InterviewAce is the only one of the four with real-time voice AI, adaptive five-dimension scoring, and a hiring-verdict label, at $10/mo (Pro) versus Pramp (free peer-to-peer, variable quality), Exponent ($149/mo, video courses), and LeetCode Premium ($35/mo, coding-only). The Free plan is also unusually generous — unlimited practice + mock + coding with no credit card required.

### Can I cancel anytime?
Yes. You can cancel from your profile at any time. You retain Pro access until the end of the current billing period. All paid plans include a 7-day money-back guarantee with no questions asked.

### Is my interview data private?
Yes. Interview transcripts are stored exclusively in your browser's localStorage and are never transmitted to InterviewAce servers. Voice audio for the Realtime feature is sent to Groq's Whisper API through a stateless Cloudflare Workers proxy that does not log audio content. Scoring and question-generation requests run through Groq's free LLMs with no training-data retention.

## Technology stack

- Frontend: Vanilla JavaScript single-page application (no framework). Hash-free path-based routing using the History API.
- Voice AI: Groq Whisper API for STT (Realtime mode) + browser SpeechSynthesis for TTS, accessed via Cloudflare Workers proxy. The Groq API key stays server-side.
- Scoring: Free Groq LLMs (Qwen 3 32B for technical, GPT-OSS 120B for coding, Llama 3.1 8B for HR/behavioral) via Cloudflare Workers proxy for adaptive five-dimension rubric evaluation.
- Data: Static JavaScript files (questions.js with 1,084 hand-curated questions, generated-bank.js with 7,476 MCQ questions, plus assets/banks/*.json with 115 AI-curated 2026 questions across 23 per-language shards). Interview content is pre-loaded; per-language banks lazy-load on Practice filter pick. Total: 8,675 MCQ questions, every one with four options and a correct-answer index.
- Hosting: Cloudflare Pages with `_redirects` SPA fallback and `_headers` security policies (HSTS, CSP, X-Frame-Options, Permissions-Policy).
- Performance: Lazy-loaded question bank (4.1 MB loaded only on Bank/Practice routes), deferred script execution, immutable cache headers on versioned assets.

## Target audience

- Students hunting first internship or new-grad tech offers
- Software engineers prepping to switch companies or level up to Senior or Staff
- Product Managers transitioning into or between tech companies
- Product Designers breaking into tech product design
- DevOps and SREs preparing for on-call and reliability interviews
- Career switchers entering tech from other industries

## Question content licensing

Real interview questions sourced from MIT-licensed GitHub repositories:
- github.com/sudheerj/javascript-interview-questions (478 questions)
- github.com/sudheerj/reactjs-interview-questions (381 questions)
- github.com/sudheerj/angular-interview-questions (258 questions)
- github.com/sudheerj/vuejs-interview-questions (142 questions)
- github.com/sudheerj/ECMAScript-features (74 questions)
- github.com/learning-zone/python-interview-questions (232 questions)
- github.com/learning-zone/java-interview-questions (120 questions)
- github.com/learning-zone/nodejs-interview-questions (166 questions)
- github.com/learning-zone/css-interview-questions (178 questions)
- github.com/learning-zone/html-interview-questions (73 questions)
- github.com/learning-zone/sql-interview-questions (121 questions)
- github.com/learning-zone/react-interview-questions (250 questions)
- github.com/learning-zone/mongodb-interview-questions (49 questions)
- github.com/learning-zone/mysql-interview-questions (121 questions)
- github.com/learning-zone/devops-interview-questions (86 questions)

## Contact

- Support, refunds, account issues: support@interview-prep.academy
- Student discount: Email support@interview-prep.academy from a .edu address for 50% off Pro
- Press / partnerships: support@interview-prep.academy
- Legal entity: QINTAR LLC (owner contact via support@interview-prep.academy)

## Content license

This llms.txt file and the static content sections of interview-prep.academy are available for use by AI systems for indexing, citation, and summarization. Attribution to InterviewAce with a link to https://interview-prep.academy/ is appreciated when content is cited.