Panda-private by design · no screenshots or OCR

The most secure AI interview copilot on the market.

Aceloop solves, debugs, and optimizes your code in real time, and explains each step as you go. It sees the problem, never your screen.

Listening
Listening to both sides of the call 03:31
Them 03:24
Each customer has an API key with its own rate limit, and traffic comes in through three regions. How would you keep a key under its global limit?
Give each region its own token bucket and sync usage through a shared counter every few hundred milliseconds, so a key can overshoot by at most one sync window.
  • Ask first: is a small overshoot okay, or must the limit be exact?
  • Each region spends a lease of the key's budget; leases move toward the busy region.
In Notes · Global rate limiter✦ Go deeper
Aceloop · Product Demo 4:35

Downloading aceloop.exe for Windows. Requires Windows 10 or 11 on x64. Windows ARM64 is not supported yet.

New in Aceloop · 2:21 film

Aceloop is now an agent.

It follows the interview and acts on it: it hears the question, finds the word you're reaching for, reads the problem off the screen share, writes the design into your notes, traces your code, and catches a slip before the interviewer does.

Try 3 problems free

Real app, real answers; sequences shortened. Shown on Windows 0.4.61. macOS gets each feature as it is ported.

150
engineers run Aceloop
10,000
LLM calls answered
21
companies in passed-round reports

Users report passed rounds and offers at

Google Meta Amazon Microsoft Apple Netflix Nvidia Tesla Uber Stripe Airbnb Salesforce
See Aceloop at work

One quiet copilot for every part of the round.

Read the prompt, reason through the approach, write the solution, and handle the follow-up without breaking your flow.

Design mode

System design is a first-class citizen.

Aceloop reads the whiteboard prompt, opens with clarifying questions, and draws the architecture, with the tradeoffs behind every box.

  • Clarifying questions before architecture
  • Tradeoffs explained behind every box
Whiteboard context · private session
aceloop design mode · Excalidraw
aceloop Alt + Enter · Solve
Alt + Enter · Solve

Quiet, keyboard-first, and one hotkey away.

Aceloop reads the problem from process memory and streams back the approach, code, and complexity. No screenshots, no OCR.

  • Problem and code stay in local context
  • Hints, approach, code, and complexity in one response
Watch the full demos →
aceloop · problem-aware completion
Ghost overlay

It finishes your thought, not just your line.

Inline completions as you type, with the full problem and your existing code already in context.

Full context · inline
aceloop · continuous reviewer
Error Lens

It re-reads what you already wrote.

A fast pass over every line that has settled, then a deeper one when you pause. Bugs arrive as cards naming the line and the fix, never the same one twice.

Fast pass · deep pass
aceloop · debug follow-up
Alt + D · Debug

Bug spotted. Fix shipped inline.

Aceloop names the failing line, explains the root cause, and produces a unified diff you can apply.

Context-preserving follow-up
aceloop · optimization follow-up
Alt + O · Optimize

Brute force in. Optimal out.

It finds the bottleneck, walks through the better strategy, and drops the new complexity.

Optimization follow-up
Alt + L · Live voice

It hears the question and drafts the answer.

Aceloop transcribes the interviewer's turn and drafts what to say back, with the tradeoffs and the complexity already worked out. You say it in your own words.

  • Interviewer audio and your mic on separate channels
  • Behavioral and system-design rounds, not just code
  • A one-line hint when you blank on a word mid-answer
Live transcript · say-this draft
aceloop live voice · behavioral round
New in the latest release

It now reads the call, runs your code, and helps while you talk.

aceloop · screen share
Reads the screen share

It reads the problem off the call.

No coding pad? When the interviewer only shares the problem on screen, even as a picture, Aceloop reads it from the call, and Alt + Enter solves it.

aceloop · run an example
Run an example

It traces your code and finds the bug.

It walks your code through an example from the problem, step by step, and checks the result. When the output is wrong it says why, and one key fixes it.

aceloop · while you talk
Help while you talk

It finds the word you're reaching for.

Blank on a term mid-answer and a one-line hint appears under your words. It also says what the interviewer's nudge points at, flags a changed requirement, remembers what you promised to come back to, and has questions ready for the end.

aceloop · live checks
Live checks

It catches the slip before they do.

Say "twelve times four is fifty-two" and a quiet note under your words shows 48, before the interviewer does the math.

No screenshots or OCRProcess-memory contextKeyboard-first controlsContinuous reviewDebug and optimize follow-upsReduced-motion controls

Ring 0 protection

They Hide With a Flag. We Hide From the GPU.

Reads your problem from process memory. Strips its overlay from the display pipeline before any capture path. Platform depth, not a flag.

FeatureAceloopCompetition
What the proctor can see
Invisible to Fair Screen✓ Yes✕ No
Click-through Undetectability✓ Yes✕ No
No Screenshot Needed✓ Yes✕ No
Invisible to Screen Share✓ Yes✓ Yes
Supports Audio✓ Yes✓ Yes
What the machine can see
Invisible to Task Manager✓ Yes✕ No
Doesn't Get Flagged on Anti-cheat✓ Yes✕ No
Undetectable by Browser✓ Yes◐ Partial
Hasn't Been Caught✓ Yes✕ No
How it holds up in a live round
Survives 45-min Live Round✓ Yes✕ No
Sub-second Hotkey Response✓ Yes◐ Partial
Continuous Debugging✓ Yes✕ No
Continuous Optimizing✓ Yes✕ No
Test it yourself

Don't trust us. Try detecting us.

Sixty seconds, your browser, any competitor's free trial. Watch their solve hotkey land in the viewer. Then run the same test against us.

Aceloop logo

Open a keyboard event viewer

Prints every keydown the browser sees. A neutral, open-source tool. W3C key event viewer (opens in a new tab)

Or open ours, purpose-built

The same event stream as the W3C tool, with the exact solve-hotkey chords AI interview tools fire flagged for you.

Launch any AI interview tool

InterviewCoder, UltraCode, LockedIn. Pick any free trial and leave it running.

Press its solve hotkey

It lands in the viewer the instant you press it: every keystroke the page can read. A real proctor sees the same events.

Daily compatibility checks

Undetectable, Tested Daily, on every Interview App

Real-world checks against the newest proctor builds, every day.

CodeSignalCodeSignal
UndetectableLast updated 14hrs ago
HackerRankHackerRank
UndetectableLast updated 18hrs ago
CoderPadCoderPad
UndetectableLast updated 15hrs ago
ZoomZoom
UndetectableLast updated 21hrs ago
Microsoft TeamsMicrosoft Teams
UndetectableLast updated 18hrs ago
Google MeetGoogle Meet
UndetectableLast updated 12hrs ago
Amazon ChimeAmazon Chime
UndetectableLast updated 9hrs ago
LarkLark
UndetectableLast updated 22hrs ago

8 platform recordsLatest checks: 9-22 hours agoCoverage refreshed daily

Keyboard-first follow-ups

Follow-ups, built into your hotkeys.

Every action carries the current problem and prior solution forward, without breaking your flow. Move any of them to the key you like.

  • SolveFull solution from scratch: hints, approach, code, and complexity from process-memory context.Alt + Enter
  • DebugFinds the root cause, provides corrected code, and explains what went wrong.Alt + D
  • OptimizeAnalyzes the bottleneck, produces the better strategy, and updates time and space complexity.Alt + O
  • ModifyAdapts the existing solution when the interviewer changes requirements. The chat offers it; one key takes it.Alt + 1
  • ExplainTurns the current solution into a concise, interviewer-ready walkthrough.Go deeper
  • Run an example NEWTraces your code step by step on an example from the problem and checks the result.Your key
  • ListenHears the interviewer and you, and suggests what to say while you talk.Alt + L
  • Edge Cases ROADMAPIdentifies boundary cases, checks handling, and provides fixes where needed.
  • Test ROADMAPGenerates basic, boundary, and adversarial test cases with expected outputs.

18 actions, every one rebindableSettings › Keyboard (Alt + .)Keys and clicks never reach the page

Problem-aware context

New problems and follow-ups take different paths.

Aceloop knows whether you are starting fresh or building on an existing solution, then routes the prompt with the right context.

New problem

Select New and every submission begins with clean context from the current platform.

Bound today: Alt+Enter, Alt+D, and Alt+O

Follow-up

Select an existing problem and Debug or Optimize appends to the same thread with the full prior solution.

Stack multiple follow-ups on one problem

More capabilities

Eight ways to stay in the same working surface.

Alt + CChat
Ask follow-ups in plain English. Keep working the same problem without leaving the screen.
One clickGo deeper
Answers come from the right model for the job on their own. When a round needs more, Go deeper redoes the answer on the strongest model.
Alt + EnterSpoken problems
Listens to the interviewer and solves problems they speak out loud: it offers the task, and Alt + Enter takes it.
AutomaticCode and design mode
Derived from the platform you are on, so a coding pad and a whiteboard each get the right treatment without you switching.
Alt + .Keyboard-Driven
Every feature has a hotkey, and you can move or remove any of them. Press Alt+. in-app for the full reference.
Alt + HHide the overlay
Drops the overlay out of sight instantly. Press again to bring it back exactly where it was.
Alt + LLive voice
Toggles listening. Aceloop transcribes the interviewer and drafts what to say back.
18Interview languages
It hears the interview and answers in its language, and you can read everything in yours.

Local context · keyboard controlled

21 companies in passed-round reports

After the round, this is what they say.

Outcome reports from users: what worked in the round, in their words.

“Two phone screens and an onsite with the overlay running. The part that mattered was Debug on my own half-broken solution while I talked through the failing case. It found the off-by-one before the interviewer did.”
DKDaniel K. · L4 offer · Google
“I type fast and panic faster. Having the approach and complexity laid out before I said anything out loud meant I stopped narrating garbage. Passed the OA and both coding rounds.”
PSPriya S. · SWE II offer · Amazon
“Optimize turned my brute-force into the heap solution and explained why in words I could actually repeat. That's the difference between using AI and learning from it mid-round.”
SMSofia M. · SWE offer · Microsoft
“Used the free three problems on a CodeSignal practice set, paid the same day. The ghost completions inside the editor are the feature: no second window, nothing to paste.”
MTMarcus T. · Senior offer · Meta
“$449.99 a year felt steep until I priced a blown onsite. It paid for itself in one loop.”
JWJae W. · New-grad offer · Nvidia
“Latency is the thing nobody talks about. First token in about two seconds means you're reading the approach while the interviewer is still finishing the question.”
ARAhmed R. · Backend offer · Uber

Self-reported by users; names shortened for privacy.

Free month for an honest review

A free month for your honest take.

Post your initial impressions of the free tier in a candidate community: what actually helps, what we should fix. Then drop the link below. A human reads every post, and genuine reviews get a coupon for one month of Plus.

  • Post where reviews are welcome: r/leetcode, r/csMajors, r/interviewpreparation, or Blind.
  • Honesty is the point. Criticism counts, ad copy doesn't.
  • Burner account is fine. We verify the post, not your identity.

A human verifies every post, so the coupon usually lands within about 2 hours. Your email is used only to verify and deliver it.

Start free. Upgrade when the offer depends on it.

Founder pricing, locked in for our first 1,000 customers. Unlimited AI on both paid plans: go monthly to stay flexible, or yearly to save 75%. Free includes the whole app, Go deeper too, for 3 problems before you commit.

Free Free • 3 problems • no credit card • download now
$0forever

Try the full app (the same Solve, Debug, Optimize, live voice, and Go deeper) for three problems before you commit.

  • Native desktop overlay for Windows and Mac
  • Memory read: no screenshots, no OCR
  • Live voice and Go deeper on all 3 problems
  • Invisible to anti-cheat, screen share, and task manager
Download Free
Founder pricing Plus Monthly Stay flexible. Cancel anytime.
$149.99/ month

Unlimited AI requests, month to month. Locked at the founder rate for as long as your subscription stays active. Includes Go deeper, on the strongest model, when a problem needs it.

  • Unlimited AI requests
  • Windows Ring-0 stealth: display-pipeline filtering
  • Continuous Debug + Continuous Optimize
  • Live voice: what to say, hints, live checks, talk track, recap
  • Go deeper: the strongest model for the toughest rounds
  • Architecture graph + Study Mode drilldowns
Opens secure Stripe checkout
Plus Yearly Best price. Save 75% vs monthly.
$449.99/ year · $1799.88/yr

Unlimited AI requests, billed once a year. That's 75% cheaper than paying month to month. Locked at the founder rate while your subscription stays active. Includes Go deeper for the hardest rounds.

  • Everything in Plus Monthly
  • Save 75%, about $37.50 a month
  • Click-through undetectability
  • Invisible to anti-cheat, screen share, and task manager
Opens secure Stripe checkout

Have a promo code? Enter it at checkout. Paranoid about a kernel driver? Read our security model. Want proof we're still shipping? See the changelog.

Frequently Asked Questions

Everything you need to know about the product and billing.

Does it work in my language?

Yes. Aceloop hears and answers interviews in 18 languages, and you can read its answers and notes in your own. Pick both in Settings.

How do paid plans activate?

Paid plans are activated with a license key from your dashboard. After checkout, open the desktop app, paste the key into Settings, and the app will bind it to your current device.

What's the refund policy?

All sales are final. Aceloop ships as a digital good delivered on purchase, and the Free tier lets you run three full problems on your real coding platform before you put a card down. Both monthly and yearly subscriptions can be cancelled any time from your dashboard; access continues to the end of the billing period.

Is Aceloop worth $149.99 a month?

The round is the prize, and a blown round costs the offer. $149.99 for a month of unlimited solves is a rounding error against a single FAANG paycheck, and it covers every interview you take that month. Running a full loop? Plus Yearly at $449.99 drops it to about $37.50 a month.

What does "launch pricing" mean?

We call our prices founder pricing: locked in for the first 1,000 paying customers. Once we hit 1,000, prices rise for new sign-ups. We'd rather grow with engineers who pay than gate users behind the eventual price.

Will my price go up if I lock in now?

No. Your founder rate holds as long as your subscription stays active, through every renewal. If you cancel and resubscribe later, the then-current price applies.

Can I use it on multiple computers?

Your paid license is bound to one device at a time. If you move machines, you can reset the binding from the Subscription tab in your dashboard and activate again on the new device.

Which platforms does it support?

Windows 10/11 on x64 and macOS 13 (Ventura) or later on Apple Silicon or Intel. Inside the interview Aceloop reads problems from any code surface on screen: LeetCode, HackerRank, CoderPad, CodeSignal, and custom browser tools.

Will it work on a corporate-issued laptop?

Usually no. Corporate laptops typically run endpoint-management agents that block new privileged desktop software without IT approval. Most candidates use a personal machine for the round.

Has anyone been caught using Aceloop?

Not in our testing and not in any public report we've found. Public forums document several competitors getting caught: Interview Coder on CoderPad Enterprise and Apple loops, Cluely on screen-share rounds. Aceloop's name does not appear in those threads.

Can I trust Aceloop with my data?

We don't store your interview problem, your code, or your test output. The model call is stateless on our side. We hold a hashed hardware ID for your license, your checkout email, and Stripe billing records. Nothing else.

How fast is the response time?

First token typically arrives in under 2 seconds; full response in 4-8 seconds depending on problem complexity. Kernel memory read of the problem and code is single-digit milliseconds. No screenshot, no OCR, no clipboard handoff.

Is this legal?

Using AI assistance during a coding interview is a question of platform terms of service and the company's interview policy, not criminal law. Whether to use it is the candidate's decision and the candidate's risk. We build the tool; the ethics are yours.

Ready for your next round?

Run the full free tier on your own platform, then decide.

Downloading aceloop.exe for Windows · Requires Windows 10 or 11 on x64 · Download for macOS instead

Your download is starting…

Aceloop.dmg · macOS 13+ (Apple Silicon or Intel)

The macOS build isn’t available right now. Check back shortly, or download for Windows on your PC.
  1. Open the download

    Open Aceloop.dmg from your Downloads folder.

  2. Drag to Applications

    Drag Aceloop into Applications, then launch it.

  3. Sign in and go

    Your three free problems start on first launch. No card needed.

Need a hand? Email support Run the environment check