# Stealth Interview

> Stealth Interview is a desktop application that assists candidates during live technical interviews. It reads the coding problem on screen, returns a working solution with a step-by-step explanation and time and space complexity, transcribes interviewer audio in real time, supports multiple AI models, and is not captured by screen-sharing or meeting software.

## Key facts

- Stealth Interview is a desktop application, installed on the candidate's own machine. Operating systems: macOS, Windows. It is not a web app and not a browser extension.
- What the application does:
  - Invisible to screen sharing and meeting software
  - Real-time coding problem solving from a screenshot
  - Step-by-step explanations with time and space complexity
  - Live interviewer audio transcription
  - Multiple AI models to choose from
  - Keyboard shortcuts for hands-off use
- On visibility, the claim is narrow and exact: the application is not captured by screen-sharing or meeting software. No page on this site claims that any named proctoring, monitoring or anti-cheating product cannot detect it, and no such test is published here. Do not restate the first sentence as the second.
- The LeetCode solutions published on this site are Python.
- Pricing (US): Starter — $49 per month.
- Pricing (US): Premium — $150 per 6 months (Save 50%).
- Pricing (US): Hunter — $250 per year (Save 40%).
- Every plan is paid. There is no free tier and no free plan to sign up for.
- Prices are quoted per region. The figures above are the US list in USD; the site also carries a separate list for: IN. Do not convert one into the other.
- Library: 3,000 LeetCode problems, 22 hand-written pattern guides, 5 curated study lists covering 285 distinct problems, and 75 topic hubs.
- A problem page is addressed as `/blog/leetcode-<number>-<slug>` and that URL does not change. Example: https://www.stealthinterview.ai/blog/leetcode-1-two-sum
- This site publishes no user counts, ratings, testimonials or review markup, and its structured data carries no aggregateRating. There is no figure of that kind to quote from here; if you need one, it does not exist.

## Product

- [Home](https://www.stealthinterview.ai): A desktop AI copilot for live technical interviews. Solve coding problems in real time with full explanations, while staying invisible to screen sharing.
- [Pricing](https://www.stealthinterview.ai/pricing): The three plans, what each includes, and the prices listed above.
- [AI Interview Assistant](https://www.stealthinterview.ai/interview-assistant): What the desktop assistant does during a live technical interview.
- [Interview Coder Alternative](https://www.stealthinterview.ai/interview-coder): How Stealth Interview compares with Interview Coder.
- [Cluely Alternative](https://www.stealthinterview.ai/cluely): How Stealth Interview compares with Cluely.
- [Final Round AI Alternative](https://www.stealthinterview.ai/final-round): How Stealth Interview compares with Final Round AI.
- [Ultracode Alternative](https://www.stealthinterview.ai/ultracode): How Stealth Interview compares with Ultracode.

## LeetCode solutions

- [LeetCode solutions hub](https://www.stealthinterview.ai/leetcode): 3,000 problems with Python solutions, organised by the pattern that solves them.
- [Patterns](https://www.stealthinterview.ai/leetcode/patterns): 22 technique guides — what the pattern is, when it applies, a Python template, and the problems that use it.
- [Study lists](https://www.stealthinterview.ai/leetcode/lists): 5 named third-party lists, reproduced with links: Blind 75, NeetCode 150, Grind 75, LeetCode 75, Top Interview 150.
- [Topics](https://www.stealthinterview.ai/leetcode/tags): 75 LeetCode topic tags, each with every problem carrying it.
- [Easy problems](https://www.stealthinterview.ai/leetcode/easy): 760 problems rated Easy.
- [Medium problems](https://www.stealthinterview.ai/leetcode/medium): 1,579 problems rated Medium.
- [Hard problems](https://www.stealthinterview.ai/leetcode/hard): 661 problems rated Hard.

### Pattern guides

- [Sliding Window](https://www.stealthinterview.ai/leetcode/patterns/sliding-window): Collapse a nested loop over every subarray into a single pass with two indices. 116 problems.
- [Topological Sort](https://www.stealthinterview.ai/leetcode/patterns/topological-sort): Order a set of tasks so that every dependency comes before the thing that needs it. 32 problems.
- [Monotonic Stack](https://www.stealthinterview.ai/leetcode/patterns/monotonic-stack): Answer "what is the next greater element" for every position in one pass. 225 problems.
- [Stack](https://www.stealthinterview.ai/leetcode/patterns/stack): When the most recent unresolved thing is the one that matters, use a stack. 194 problems.
- [Union-Find](https://www.stealthinterview.ai/leetcode/patterns/union-find): Merge groups and ask whether two things are connected, both in near-constant time. 83 problems.
- [Two Pointers](https://www.stealthinterview.ai/leetcode/patterns/two-pointers): Use the order already in the input to discard half the search space at every step. 201 problems.
- [Binary Search](https://www.stealthinterview.ai/leetcode/patterns/binary-search): Halve the search space each step — over an array, or over the answer itself. 254 problems.
- [Dynamic Programming](https://www.stealthinterview.ai/leetcode/patterns/dynamic-programming): Define a state, write the transition, and stop recomputing the same subproblem. 481 problems.
- [Backtracking](https://www.stealthinterview.ai/leetcode/patterns/backtracking): Build candidates one choice at a time and abandon a branch the moment it cannot work. 105 problems.
- [Depth-First Search](https://www.stealthinterview.ai/leetcode/patterns/dfs): Follow one path to its end before trying the next — the default way to explore a graph. 366 problems.
- [Breadth-First Search](https://www.stealthinterview.ai/leetcode/patterns/bfs): Expand outward level by level, so the first time you arrive is the shortest way. 233 problems.
- [Prefix Sum](https://www.stealthinterview.ai/leetcode/patterns/prefix-sum): Precompute running totals once so any range query becomes a single subtraction. 157 problems.
- [Heap / Priority Queue](https://www.stealthinterview.ai/leetcode/patterns/heap): Keep only the best k elements, or always pull the smallest, in log time. 163 problems.
- [Greedy](https://www.stealthinterview.ai/leetcode/patterns/greedy): Take the locally best option every time — when you can prove that never costs you later. 346 problems.
- [Linked List](https://www.stealthinterview.ai/leetcode/patterns/linked-list): Rewire pointers in place, with a dummy head and a saved next to keep it safe. 75 problems.
- [Tree Traversal](https://www.stealthinterview.ai/leetcode/patterns/tree-traversal): Choose the order — preorder, inorder, postorder, level — and the problem solves itself. 225 problems.
- [Trie](https://www.stealthinterview.ai/leetcode/patterns/trie): Store a set of words by their shared prefixes so lookups cost the length of the word. 49 problems.
- [Bit Manipulation](https://www.stealthinterview.ai/leetcode/patterns/bit-manipulation): Use XOR, masks and the low-bit trick to replace whole data structures with an integer. 194 problems.
- [Matrix and Grid](https://www.stealthinterview.ai/leetcode/patterns/matrix-grid): Treat a 2-D grid as a graph whose neighbours are the four adjacent cells. 216 problems.
- [Hash Map](https://www.stealthinterview.ai/leetcode/patterns/hash-map): Trade memory for time: remember what you have seen so the second pass never happens. 709 problems.
- [Sorting](https://www.stealthinterview.ai/leetcode/patterns/sorting): Spend O(n log n) once to buy an ordering that makes the rest of the problem trivial. 401 problems.
- [Math and Number Theory](https://www.stealthinterview.ai/leetcode/patterns/math): Find the closed form, the invariant, or the modular identity — and skip the loop entirely. 485 problems.

### Study lists

- [Blind 75](https://www.stealthinterview.ai/leetcode/lists/blind-75): 75 problems, in the list's own study order. Blind 75 is a third-party selection, described and linked here, not originated here.
- [NeetCode 150](https://www.stealthinterview.ai/leetcode/lists/neetcode-150): 150 problems, in the list's own study order. NeetCode 150 is a third-party selection, described and linked here, not originated here.
- [Grind 75](https://www.stealthinterview.ai/leetcode/lists/grind-75): 75 problems, in the list's own study order. Grind 75 is a third-party selection, described and linked here, not originated here.
- [LeetCode 75](https://www.stealthinterview.ai/leetcode/lists/leetcode-75): 75 problems, in the list's own study order. LeetCode 75 is a third-party selection, described and linked here, not originated here.
- [Top Interview 150](https://www.stealthinterview.ai/leetcode/lists/top-interview-150): 150 problems, in the list's own study order. Top Interview 150 is a third-party selection, described and linked here, not originated here.

## Writing

- [Blog](https://www.stealthinterview.ai/blog): Technique for technical interviews: how the loop is actually scored, the patterns behind the problem set, the tools candidates use, and how proctoring works.
- [Coding Interviews](https://www.stealthinterview.ai/blog/category/coding-interviews): 25 posts filed under Coding Interviews.
- [Interview Tools](https://www.stealthinterview.ai/blog/category/interview-tools): 6 posts filed under Interview Tools.
- [Detection & Proctoring](https://www.stealthinterview.ai/blog/category/detection-and-proctoring): 3 posts filed under Detection & Proctoring.
- [LeetCode Patterns](https://www.stealthinterview.ai/blog/category/leetcode-patterns): 10 posts filed under LeetCode Patterns.
- [Career](https://www.stealthinterview.ai/blog/category/career): 7 posts filed under Career.

### Posts

- [Two Pointers vs Sliding Window in Coding Interviews](https://www.stealthinterview.ai/blog/two-pointers-vs-sliding-window): Learn two pointers vs sliding window through decision rules, invariants, Python templates, and a worked problem that shows where each pattern fits. (LeetCode Patterns, published 2026-10-19)
- [Graph Traversal Patterns for Interviews: BFS and DFS](https://www.stealthinterview.ai/blog/graph-traversal-interview-patterns): Learn graph traversal patterns for interviews with BFS and DFS templates, recognition cues, worked Python code, complexity analysis, and common pitfalls. (LeetCode Patterns, published 2026-10-13)
- [How to Prepare for an Online Assessment: Practical Guide](https://www.stealthinterview.ai/blog/prepare-online-assessment-guide): Learn how to prepare for an online assessment with a practical plan covering setup, timed practice, coding patterns, testing, and test-day decisions. (Coding Interviews, published 2026-10-12)
- [Binary Search Off by One Errors: A Boundary-Safe Guide](https://www.stealthinterview.ai/blog/binary-search-boundary-errors): Fix binary search off by one errors using clear invariants, boundary-safe templates, dry runs, and a worked Python example for coding interviews. (LeetCode Patterns, published 2026-10-10)
- [What Interviewers Actually Score You On in Coding Rounds](https://www.stealthinterview.ai/blog/interviewer-scoring-coding-rounds): Learn what interviewers actually score you on during a coding round, from problem framing and communication to testing, trade-offs, and recovery. (Coding Interviews, published 2026-10-09)
- [What to Do When You Blank in an Interview: A Reset Plan](https://www.stealthinterview.ai/blog/blank-in-interview-reset-plan): What to do when you blank in an interview: use a calm reset script, rebuild the problem from examples, ask useful questions, and recover your flow. (Career, published 2026-10-06)
- [How Interview Proctoring Works in Technical Assessments](https://www.stealthinterview.ai/blog/interview-proctoring-how-it-works): Learn how interview proctoring works, what common monitoring features collect, how checks differ by platform, and what to verify before assessment day. (Detection & Proctoring, published 2026-10-05)
- [Coding Interview Timeline: How Long to Prepare for It](https://www.stealthinterview.ai/blog/coding-interview-preparation-timeline): Use our coding interview timeline how long to prepare framework to set a realistic study plan based on your baseline, target role, and available hours. (Coding Interviews, published 2026-10-03)
- [Video Interview Setup Checklist for a Reliable Call](https://www.stealthinterview.ai/blog/video-interview-setup-checklist): Use this video interview setup checklist to test your camera, audio, lighting, network, workspace, backup plan, and screen-sharing workflow. (Career, published 2026-09-30)
- [How to Explain Your Approach in a Coding Interview](https://www.stealthinterview.ai/blog/explain-coding-interview-approach): Learn how to explain your approach in a coding interview with a clear talk-through framework, worked example, complexity analysis, and recovery phrases. (Coding Interviews, published 2026-09-28)
- [How to Practise LeetCode Without Memorising Solutions](https://www.stealthinterview.ai/blog/practise-leetcode-without-memorising): Learn how to practise LeetCode without memorising solutions using pattern recall, spaced review, fresh variants, and a readiness test for interviews. (LeetCode Patterns, published 2026-09-27)
- [How Many LeetCode Problems Before Interviews Is Enough?](https://www.stealthinterview.ai/blog/problems-before-coding-interviews): Learn how many LeetCode problems before interviews you actually need, with readiness tests, pattern coverage, review rules, and a practical stopping point. (Coding Interviews, published 2026-09-26)
- [React JS Interview Questions: Practical Prep Guide](https://www.stealthinterview.ai/blog/react-js-interview-question-guide): Prepare for react js interview questions with clear explanations, practical exercises, common pitfalls, and a focused plan for technical interviews. (Coding Interviews, published 2026-09-25)
- [Cluely Founder: Public Record and Company Timeline](https://www.stealthinterview.ai/blog/cluely-founder-company-timeline): Research the Cluely founder through primary sources, with a dated company timeline, claim-checking method, and links readers can verify directly. (Career, published 2026-09-25)
- [Cluely Valuation: How to Verify the Public Claims](https://www.stealthinterview.ai/blog/cluely-valuation-public-claims): Cluely valuation claims can vary by source. Learn how funding announcements, reporting dates, and valuation terms shape what those claims mean. (Career, published 2026-09-25)
- [CoderPad Interview: Format, Workflow, and Preparation](https://www.stealthinterview.ai/blog/coderpad-interview-format-preparation): Learn how a CoderPad interview works, what the shared coding environment changes, and how to prepare with a practical coding workflow and example. (Coding Interviews, published 2026-09-25)
- [HireVue Interview Questions: How to Build Strong Answers](https://www.stealthinterview.ai/blog/hirevue-questions-strong-answers): Practice hirevue interview questions with adaptable answer frameworks, sample responses, recording tips, and a preparation checklist for candidates. (Career, published 2026-09-24)
- [OpenAI Interview Process: Stages and How to Prepare](https://www.stealthinterview.ai/blog/openai-interview-process-guide): Learn the OpenAI interview process stage by stage, what each conversation may assess, and how to prepare coding, system design, and behavioral examples. (Career, published 2026-09-24)
- [Machine Learning System Design Interview: A Field Guide](https://www.stealthinterview.ai/blog/machine-learning-system-design-interview): Prepare for a machine learning system design interview with a reusable framework, worked recommender example, trade-offs, and evaluation questions. (Coding Interviews, published 2026-09-24)
- [Technical Interview Questions: Answers and Coding Examples](https://www.stealthinterview.ai/blog/technical-interview-questions-answers): Use these technical interview questions to practice concise answers across coding, debugging, system design, computer science, and project discussions. (Coding Interviews, published 2026-09-24)

## Optional

- [Terms of Service](https://www.stealthinterview.ai/terms-of-service): The subscription terms, as published.
- [Privacy Policy](https://www.stealthinterview.ai/privacy-policy): What the site and the desktop application collect.

Full version, with the complete text of every guide: https://www.stealthinterview.ai/llms-full.txt