Is Stealth Interview a good LockedIn AI alternative?

If the round you are worried about is a coding round, yes. Stealth Interview is a desktop app for macOS and Windows built only for live technical interviews: it reads the coding problem on your screen, returns a working solution with a step-by-step explanation and its time and space complexity, transcribes interviewer audio in real time, and is not captured by screen-sharing software. It skips resumes, job search and mock interviews on purpose.

Does Stealth Interview run in a browser?

No. It is a native application for macOS and Windows. Capturing the problem, drawing its window and transcribing interviewer audio all happen outside the browser.

Will the interviewer see it while I share my screen?

No. The app is not captured by screen-sharing or meeting software, so the interviewer sees your screen exactly as it would look without it.

What does Stealth Interview cost?

Starter is $49 per month, Premium is $150 for six months and Hunter is $250 for a year. Usage is unlimited on all three plans.

What does LockedIn AI cost?

We cannot tell you. Its home page advertises a free tier with premium plans available, but no plan amount rendered on its pricing page when we read it in August 2026. Check their pricing page directly before buying either product.

LockedIn AI Alternative: Skip the Suite

LockedIn AI bundles resumes, job search and mock rounds behind one login, and its pricing page showed no amounts when we read it in August 2026. Stealth Interview does the coding round, at a printed price.

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Free to download. Check it runs on your machine, then pick a plan.

Rec00:23:52Technical interview · 45 min

{}PYsolution.pyREADME.mdRunShared editor · Python 3

# Write your code here

def length_of_longest_substring(s: str) -> int:

last_seen = {}

left = best = 0

for right, ch in enumerate(s):

if ch in last_seen and last_seen[ch] >= left:

left = last_seen[ch] + 1

Test casesConsoleRun your code to see the output.

Case 1Case 2Case 3

Inputs = "abcabcbb"

Expected3

Problem

Longest substring without repeats

Medium

Given a string s, return the length of the longest contiguous substring in which every character is unique.

Example

in s = "abcabcbb"

out 3 ("abc")

Constraints

0 ≤ len(s) ≤ 50,000
s may contain letters, digits, symbols and spaces.

Hint 1Hint 2Topics

Auto-saved

DWARConnected · 2 participantsLn 1, Col 1Spaces: 4UTF-8Python 3

You are sharing your screenStop sharing

Dana Whitfield· Interviewer

You

Participants2Chat

DWDana WhitfieldInterviewer

ARYouSharing screen

RecThis meeting is being recorded.

Message everyone

MuteStop videoShare2ParticipantsChatReactionsLeave

Rec00:23:52

Dana

You

You are sharing your screenStop sharing

PYsolution.pyRun

Longest substring without repeatsMedium

# Write your code here

def length_of_longest_substring(s: str) -> int:

last_seen = {}

left = best = 0

for right, ch in enumerate(s):

if ch in last_seen and last_seen[ch] >= left:

left = last_seen[ch] + 1

2Leave

90%Subscription

python

Please analyze this context and help me answer the question or solve the problem.

Transcript

"Okay, next one. Given a string, return the length of the longest substring that has no repeating characters. Walk me through your approach before you code it."

Technical interview · 45 minsolution.pyShared editor · Python 3Longest substring without repeatsMediumGiven a string s, return the length of the longest contiguous substring in which every character is unique.s = "abcabcbb"
→ 31def length_of_longest_substring(s: str) -> int:2 last_seen = {}3 left = best = 04 for right, ch in enumerate(s):5 if ch in last_seen and last_seen[ch] >= left:

python

def length_of_longest_substring(s: str) -> int:    last_seen = {}                    # char -> index    left = best = 0    for right, ch in enumerate(s):        if ch in last_seen and last_seen[ch] >= left:            left = last_seen[ch] + 1  # jump past it        last_seen[ch] = right        best = max(best, right - left + 1)    return best    last_seen = {}                    # char -> index

Approach

At each index r, the window's left edge is:

left r = max (left r -1, last[s r] + 1)

Time O(n): each character enters and leaves the window once.
Space O(min(n, k)): k is the size of the character set.

Type your message...

GPT-6.1 Terra

Transcribing...

90%Subscription

python

Please analyze this context and help me answer the question or solve the problem.

Transcript

"Okay, next one. Given a string, return the length of the longest substring that has no repeating characters. Walk me through your approach before you code it."

python

def length_of_longest_substring(s: str) -> int:    last_seen = {}                    # char -> index    left = best = 0    for right, ch in enumerate(s):        if ch in last_seen and last_seen[ch] >= left:            left = last_seen[ch] + 1  # jump past it        last_seen[ch] = right        best = max(best, right - left + 1)    return best    last_seen = {}                    # char -> index

Approach

At each index r, the window's left edge is:

left r = max (left r -1, last[s r] + 1)

Time O(n): each character enters and leaves the window once.
Space O(min(n, k)): k is the size of the character set.

Type your message...

GPT-6.1 TerraClear chat

Transcribing...

QuitEscHide+QCapture+PCrop+OSubmit+EnterPress to get answerLeft/Right+Up/Down+

90%Subscription

python

Please analyze this context and help me answer the question or solve the problem.

Transcript

"Okay, next one. Given a string, return the length of the longest substring that has no repeating characters. Walk me through your approach before you code it."

python

def length_of_longest_substring(s: str) -> int:    last_seen = {}                    # char -> index    left = best = 0    for right, ch in enumerate(s):        if ch in last_seen and last_seen[ch] >= left:            left = last_seen[ch] + 1  # jump past it        last_seen[ch] = right        best = max(best, right - left + 1)    return best    last_seen = {}                    # char -> index

Approach

At each index r, the window's left edge is:

left r = max (left r -1, last[s r] + 1)

Time O(n): each character enters and leaves the window once.
Space O(min(n, k)): k is the size of the character set.

Type your message...

GPT-6.1 TerraClear chat

Transcribing...

Primary display

QuitEscHide+QCapture+PCrop+OSubmit+EnterPress to get answerLeft/Right+Up/Down+

Works with

Zoom
Meet
Teams
Webex
CoderPad
HackerRank
CodeSignal
LeetCode

Reviewed August 2026

The row that decides itScope

Stealth Interview: Live technical interviews only
LockedIn AI: Interviews plus mock rounds, reports, resume, jobs and LinkedIn tooling

Stealth Interview compared with LockedIn AI across 9 capabilities.
Capability	Stealth InterviewLive technical interview copilot	LockedIn AIWhole-interview copilot
Native desktop appA macOS and Windows application, not a browser tab.	macOS and Windows	Browser, desktop, iOS, Android
Built for the live roundAnswers during the interview itself, not a practice session after it.	Yes	Yes
Reads the problem off your screenCapture the question where it appears and get a working solution back.	Yes	Yes
Full explanation and complexityEvery solution arrives with the reasoning and its time and space cost.	Yes	Approaches and trade-offs
System design and OODArchitecture answers with a diagram, not only algorithm problems.	Yes	System-design frameworks
Live interviewer audioWhat is asked out loud is transcribed and used as context for the answer.	Yes	Listens and analyses questions
Named assessment platformsThe tools interviewers actually run problems in.	CoderPad, HackerRank, CodeSignal, LeetCode	7 platforms named
Choose your modelPick the engine per question instead of taking one fixed model.	6 models across the plans	Not stated
Published priceWhat the vendor's own pricing page showed when it was read.	$49 / month · $150 / 6 months · $250 / year	Not stated

NoteWe filled in their column from their own website, so “Not stated” means we could not find it — not that it is missing. Prices and features change, so check theirs before you buy. Last reviewed August 2026. Sources: lockedinai.com.

What LockedIn AI actually is

LockedIn AI's home page (August 2026) describes an AI interview assistant that listens to the interview, analyses the questions and returns real-time answers, code solutions and live coaching.

LockedIn AI is a live interview assistant that answers while the interview is happening. Per its home page (August 2026) it ships on three surfaces at once: a browser app for Chrome, Edge, Chromium, Opera and Brave, desktop apps for Windows 10 and later and macOS 13.1 and later, and mobile apps for iOS and Android.

Its Coding Copilot page (August 2026) says the tool reads the problem directly from your screen and returns solution approaches, complexity trade-offs, edge cases and system-design frameworks. The same page names LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, Codility and InterviewBit as input sources alongside Zoom and Google Meet, and states that no install or IDE plugin is required.

Around the live assistant sits a wider career product. The home page lists mock interviews, post-interview performance reports, a resume, jobs and LinkedIn toolkit, online-assessment support naming HireVue, a VS Code and Cursor integration, a Remote Assist mode that brings a trusted helper into the session, and 50+ language support.

Everything about LockedIn AI on this page was read on its own site (opens in a new tab) in August 2026. Where its pages are silent we say so; we don't test rivals' software or guess what it does.

Where it costs you in the round

It is a career suite with a coding mode. Resumes, job search, mock interviews, reports and LinkedIn tooling share one product, per its home page (August 2026), and the live coding round is one feature among them. Here it is the entire product.
Browser first. Its Coding Copilot page leads with the fact that nothing needs installing. That is the convenience; the cost is an assistant that lives in a tab rather than in a window of its own.
No price you can check. Neither its home page nor its pricing page rendered a plan amount when we read them in August 2026, so its side of the price row stays empty.
No model list. Its pages describe approaches, trade-offs and frameworks, but not which model writes them or on which plan, so you cannot buy on the model you want.

Credit where it's due

Three delivery surfaces — browser, desktop and mobile — so the tool is not tied to the machine you are interviewing on.
Its Coding Copilot page names seven assessment platforms explicitly, including Codility, HackerEarth and InterviewBit, which most products in this category do not enumerate.
The product covers the parts of a job hunt that happen outside the interview: mock rounds, performance reports, resume and LinkedIn tooling.
A VS Code and Cursor integration, which matters when the exercise happens in your own editor rather than in a browser tab.
Remote Assist — a documented mode for pulling a human helper into a live session — has no equivalent in most competing tools.

How the two are built

The difference that matters is where each tool draws its window. LockedIn AI leads with a browser app: its Coding Copilot page opens on the fact that nothing has to be installed. Stealth Interview starts from the other end, a native application on macOS and Windows that owns a window of its own and is excluded from screen capture.

That decision cascades in both directions. A browser-resident assistant is portable by construction: any machine with a supported browser is a machine you can work from, which is exactly why LockedIn AI can also ship iOS and Android. A native application gives that up — it runs where it is installed and nowhere else — in exchange for living outside the page, outside the tab, and outside the meeting client's capture pipeline.

The second difference is what each tool consumes. Both read the screen. Stealth Interview also transcribes interviewer audio continuously, so the question asked out loud and the problem rendered on screen are one context rather than two things you have to reconcile in your head while talking.

We have not tested LockedIn AI against a proctored assessment, and nothing on this page claims what any platform can or cannot observe when it runs. What can be stated is the shape of the two products, and that is what this section describes.

What the platforms actually document

The detection question is really three questions, because the platforms run three different regimes. HackerRank's own knowledge base (August 2026) documents Secure Mode as a controlled browser environment: full screen enforced, copy and paste blocked, multiple monitors prevented, tab switches flagged. Proctor Mode keeps all of that and adds screenshot analysis, plagiarism detection and webcam anomaly detection.

Desktop App Mode is a different regime entirely. HackerRank documents it as a lightweight desktop application the candidate installs on Windows or macOS, which blocks other applications for the duration of the test — its documentation names video conferencing, messaging and LLM applications — detects and closes programs opened during the test, prevents screen sharing and screenshots, checks continuously for multiple monitors and screen mirroring, refuses to run on a virtual machine, and blocks remote access.

Read that list before you shop. If an employer sends you a HackerRank assessment in Desktop App Mode, the honest answer is not a different overlay — it is to sit the assessment on your own merits and put your preparation into the patterns it will actually ask about. Any vendor that tells you otherwise, including this one, would be selling something it cannot deliver.

The test is in a tab. The answer isn't.

Unless Desktop App Mode is on, a HackerRank test is a web page. Stealth Interview runs outside it, in a desktop window set to be excluded from screen capture.

It doesn't change what the webcam sees, the editor's own record of pastes and typing, or a browser noticing focus leave the test, and we haven't tested every browser and OS version a test runs on. Desktop App Mode is HackerRank's own native app, documented to close other programs: plan on Stealth Interview not running beside it, and prepare with the sliding window pattern instead.

What each HackerRank mode records

One job, done natively

Stealth Interview is a desktop application for macOS and Windows. It is not a browser tab and not a meeting bot: it draws its own window, and that window is not captured by screen-sharing or meeting software.

Screenshot in, working solution out
Capture the problem on screen and you get a solution back with a step-by-step explanation and its time and space complexity — not a hint you still have to turn into code while someone watches.
The interviewer's voice is an input
Interviewer audio is transcribed live, so a spoken follow-up — what happens if the input is already sorted? — lands in the same context as the code on your screen instead of being a separate conversation you handle alone.
You pick the model
Starter includes GPT-6 Luna and GPT-6.1 Terra. Premium and Hunter add GPT-6.1 Sol, GPT-6 Astra, Claude Sonnet 5.5 and Claude Opus 5.5. The plan you buy tells you exactly which models you get.
Everything is a keyboard shortcut
Capture, solve, move and hide are all bound to keys. In a shared-screen call your mouse cursor is visible to everyone; the keyboard is not.
Priced by time, not by interview
Unlimited usage on all three plans. Nothing counts how many rounds you take, which matters on the week an on-site turns into five of them.

When LockedIn AI is the better buy

You want the whole job hunt behind one login: Mock interviews, performance reports, resume and LinkedIn tooling and the live assistant all sit in the same product, per LockedIn AI's home page (August 2026). Stealth Interview does none of the first four and is not going to: it is a live interview tool only. If the alternative is paying for two subscriptions, one is cheaper and less to manage.
You need a phone or a second device: LockedIn AI lists iOS and Android apps. Stealth Interview is a desktop application for macOS and Windows; there is no phone build and no browser build. If you are interviewing on a locked-down company laptop and your own machine is not in the room, a phone is the only surface you have left.
The exercise happens inside your editor: A VS Code and Cursor integration is aimed at work that happens in an IDE rather than a browser tab — take-home rounds, pair-programming in your own repository, a live session in a project you already have open. That is a different ergonomic problem from reading a problem statement off a shared screen.

What the round is worth

Every plan on this page costs less than one offer is worth. The question is which one was built for the round.

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Company names and logos are trademarks of their owners. They show where technical interviews happen and are not customers, partners or endorsements.

Every plan includes unlimited usage

Starter

$49/ month

Get Starter

Includes:

GPT-6 Luna and GPT-6.1 Terra models
Desktop app for macOS and Windows
Conversational AI with follow-ups
Real-time interviewer audio transcription
Unlimited usage

Premium

Recommended

$150/ 6 months

Get Premium

Everything in Starter, plus:

GPT-6.1 Sol, GPT-6 Astra, Claude Sonnet 5.5 and Claude Opus 5.5
Early access to premium AI models
Accelerated AI solutions
Priority support

Hunter

$250/ year

Get Hunter

Everything in Premium, plus:

Unlimited Premium AI model usage
2-hour support window
Ultra-accelerated AI solutions
Priority features

LockedIn AI

As published

Not stated

No amount rendered on their page when we read it. Ours are printed above.

Note

LockedIn AI's home page says the product is free to start with premium plans available, and its pricing page shows plan names without amounts — nothing rendered a number when we read both pages in August 2026. Rather than quote a figure from a review site, we are leaving their column empty: check their pricing page yourself before you buy either product.

5 questions

LockedIn AI alternative: common questions

Is Stealth Interview a good LockedIn AI alternative?: If the round you are worried about is a coding round, yes. Stealth Interview is a desktop app for macOS and Windows built only for live technical interviews: it reads the coding problem on your screen, returns a working solution with a step-by-step explanation and its time and space complexity, transcribes interviewer audio in real time, and is not captured by screen-sharing software. It skips resumes, job search and mock interviews on purpose.
Does Stealth Interview run in a browser?: No. It is a native application for macOS and Windows. Capturing the problem, drawing its window and transcribing interviewer audio all happen outside the browser.
Will the interviewer see it while I share my screen?: No. The app is not captured by screen-sharing or meeting software, so the interviewer sees your screen exactly as it would look without it.
What does Stealth Interview cost?: Starter is $49 per month, Premium is $150 for six months and Hunter is $250 for a year. Usage is unlimited on all three plans.
What does LockedIn AI cost?: We cannot tell you. Its home page advertises a free tier with premium plans available, but no plan amount rendered on its pricing page when we read it in August 2026. Check their pricing page directly before buying either product.

Approach

Approach

Approach

What LockedIn AI actually is

Where it costs you in the round

Credit where it's due

How the two are built

What the platforms actually document

The test is in a tab. The answer isn't.

One job, done natively

Screenshot in, working solution out

The interviewer's voice is an input

You pick the model

Everything is a keyboard shortcut

Priced by time, not by interview

When LockedIn AI is the better buy

What the round is worth

Every plan includes unlimited usage

Starter

Premium

Hunter

LockedIn AI

LockedIn AI alternative: common questions

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