Aceloop AI · Windows-native interview copilot

Your Windows copilot for technical interviews.

Aceloop solves, debugs, optimizes, and explains coding problems in real time, with full context from the problem, your code, and every previous attempt.

  • No account or card
  • Windows 10 & 11
2,000+
engineers run Aceloop
4.9/5
average rating from 100+ reviews
25+
companies in passed-round reports

Users report passed rounds and offers at

New · Design Mode

System design, now a first-class citizen.

“Design WhatsApp.” Aceloop reads the prompt off the whiteboard, opens with clarifying questions, then draws the architecture onto your canvas, with the tradeoffs, risks, and talking points behind every box.

The actual overlay

Quiet, keyboard-first, one hotkey away.

Sits over the coding platform, reads the problem from process memory, and streams the answer back.

Ghost overlay

It finishes your thought, not just your line.

Inline completions as you type. Tab to accept, like Copilot, except it has already read the full problem and your code.

Ghost overlay

It lives in your editor, not a second window.

Ghost text renders inside the platform editor (HackerRank, CodeSignal, CoderPad, LeetCode), right where your cursor is. No second window, no alt-tab.

Alt + 1 · Debug

Bug spotted, fix shipped. Inline.

Hit Alt + 1 on a broken solution. Aceloop names the line, explains the failure, and ships a unified diff you can apply.

Alt + 2 · Optimize

Brute force in. Optimal out.

Hit Alt + 2 on a slow solution. Aceloop finds the bottleneck, walks through the better strategy, and ships a unified diff that drops the complexity.

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.

Feature
Ring 0
Aceloop
Competition
Supports Audio
Invisible to Screen Share
Undetectable by Browser
Sub-second Hotkey Response
Invisible to Task Manager
Doesn't Get Flagged on Anti-cheat
Invisible to Fair Screen
No Screenshot Needed
Click-through Undetectability
Hasn't Been Caught
Continuous Debugging
Continuous Optimizing
Survives 45-min Live Round
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.

  1. Open a keyboard event viewer

    Prints every keydown the browser sees. A neutral, open-source tool.

    W3C key event viewer
  2. 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.

    Open our key viewer
  3. Launch any AI interview tool

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

  4. 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.

Undetectable, Tested Daily,
on every Interview App

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

001CodeSignal
Undetectable
002HackerRank
Undetectable
003CoderPad
Undetectable
004Zoom
Undetectable
005Microsoft Teams
Undetectable
006Google Meet
Undetectable
007Amazon Chime
Undetectable
008Lark
Undetectable

Follow-ups, built into your hotkeys

Interviewers ask follow-ups on the same problem. Every one is a hotkey, and each carries your prior solution forward.

Solve
Alt + Enter

Full solution from scratch. Pulls the problem statement from process memory and ships hints, approach, code, and complexity.

Creates a new problemAlways creates a new problem
Debug
Alt + 1

Find and fix bugs. Identifies the root cause, provides corrected code, and summarizes what went wrong.

New problem with debug analysisAppends debug follow-up
Optimize
Alt + 2

"Can you do better?" -- Analyzes the current inefficiency, provides optimized code, and states the new time/space complexity.

New problem with optimized rewriteAppends optimization follow-up
ModifyComing Soon

"Can you adapt this?" -- When the interviewer changes requirements. Explains what changed and provides the modified solution.

Requires an existing problemAppends modification follow-up
Edge CasesComing Soon

"What about edge cases?" -- Identifies edge cases, checks handling status, and provides fixes where needed.

New problem with edge case analysisAppends edge case follow-up
ExplainComing Soon

"Walk me through your solution." -- Step-by-step algorithm walkthrough and a concise interviewer-ready explanation.

Requires an existing problemAppends explanation follow-up
TestComing Soon

"How would you test this?" -- Generates comprehensive test cases with expected outputs covering basic, boundary, and edge scenarios.

New problem with test generationAppends test follow-up

New problems vs. follow-ups

Aceloop knows whether you're starting fresh or building on an existing solution and routes the prompt to match.

New Problem

When you're on the "New" entry in the sidebar, submissions create a fresh problem with no prior context.

  • -- Bound today: Alt+Enter (Solve), Alt+1 (Debug), Alt+2 (Optimize)

Follow-Up

When you've selected an existing problem, Alt+1 and Alt+2 append a follow-up section. The AI receives your full prior solution as context.

  • -- Bound today: Debug + Optimize follow-ups
  • -- Stack multiple on one problem

More capabilities

Alt + L

Chat

Ask follow-ups in plain English. Keep working the same problem without leaving the screen.

Settings

Reasoning Mode

Agent-style orchestration for the hardest rounds: plans, checks, and refines before it answers.

Alt + '

Audio Solve

Listens to the interviewer and solves problems they speak out loud.

Alt + M

Code Mode

Pulls the problem and code from process memory, then generates hints, approach, code, and complexity.

Alt + .

Keyboard-Driven

Every feature has a hotkey. Press Alt+. in-app for the full reference.

Alt + H

Ring-0 Reads

Reads the problem, code, and terminal straight from process memory at the kernel. No screenshots, no OCR.

4.9/5 average from 100+ reviews

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.”
Daniel 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.”
Priya 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.”
Sofia 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.”
Marcus T.Senior offer · Meta
“$449.99 a year felt steep until I priced a blown onsite. It paid for itself in one loop.”
Jae 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.”
Ahmed 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.

Your post must be your own genuine experience. Please include a one-line note that a free month was offered for the review; it keeps your post within community and endorsement rules.

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 Reasoning Mode for 3 problems before you commit.

Reasoning Mode adds agent orchestration for solving the toughest challenges.

Free

Free • 3 problems • no credit card • download now

$0 forever

Try the full app (same kernel-resident stack, same stealth, same Reasoning Mode) for three problems before you commit.

  • Ring-0 kernel stealth: display-pipeline filtering
  • Memory read: no screenshots, no OCR
  • Continuous Debug + Continuous Optimize
  • Reasoning Mode: agent orchestration for the toughest challenges
  • Invisible to anti-cheat, screen share, and task manager
  • Click-through undetectability
  • Unlimited AI requests
  • Architecture graph + Study Mode drilldowns
Download Free

Plus Monthly

Stay flexible. Cancel anytime.

$149.99 / month
Founder pricing

Unlimited AI requests, month to month. Locked at the founder rate for as long as your subscription stays active. Includes Reasoning Mode when the problem needs a deeper pass.

  • Ring-0 kernel stealth: display-pipeline filtering
  • Memory read: no screenshots, no OCR
  • Continuous Debug + Continuous Optimize
  • Reasoning Mode: agent orchestration for the toughest challenges
  • Invisible to anti-cheat, screen share, and task manager
  • Click-through undetectability
  • Unlimited AI requests
  • Architecture graph + Study Mode drilldowns
Best value

Plus Yearly

Best price. Save 75% vs monthly.

$1799.88/yr
$449.99 / year
Founder pricingSave 75%

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 Reasoning Mode for the hardest rounds.

  • Ring-0 kernel stealth: display-pipeline filtering
  • Memory read: no screenshots, no OCR
  • Continuous Debug + Continuous Optimize
  • Reasoning Mode: agent orchestration for the toughest challenges
  • Invisible to anti-cheat, screen share, and task manager
  • Click-through undetectability
  • Unlimited AI requests
  • Architecture graph + Study Mode drilldowns

Have a promo code? Enter it at checkout.

Paranoid about a kernel driver? Read our security model: threat model, data stance, attestation chain.

Want proof we're still shipping? See the changelog: what's landed, when.

Frequently Asked Questions

Everything you need to know about the product and billing.

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.

Ready for your next round?

Engineers find us through friends who already passed. Run the free tier on your own platform, then decide.

Chat on WhatsApp