Every feature, explained

What Dertos AI does before, during and after your call.

Live call

Both sides of the call, labelled live

The interviewer comes in through system audio, you through the mic. Everything else follows from that.

Two-way transcript: interviewer (system audio) and you (mic)
Per-channel mute with one click
Question detection with auto-answer on or off
Answer now (⌘↩) whenever you want it
Chat: type a question, Enter asks, Esc closes
Previous and next answers in the session
Compact mode and adjustable opacity
Resize up to 85% of the screen height
Meeting auto-detect for Zoom, Meet, Teams and Webex

Answer⌘↩Screenshot⌘⇧↩Chat⌘⇧CEnd⌘⇧L

InterviewerTell me about a time you disagreed with your manager.YouSure, so at my last role…Clear⌘⇧K

‹⌘⇧←›⌘⇧→04:12Clear⌘⇧⌫

QuestionTell me about a time you disagreed with your manager.

Answer:STARclaude-haiku

Situation: Release planning; my manager wanted to ship without load tests.

Task: Protect launch reliability without blocking the date.

Action: Proposed a 2-hour targeted load test on the 3 riskiest endpoints and shared the data.

Result: Found a connection-pool bug, shipped on time, zero incidents in launch week.

Channel mute: click the screen or mic icon
Answer now (⌘↩)
Chat: type a question (⌘⇧C)
Live transcript chips, interviewer and you
Question and streamed answer
Follow-ups and the style picker

Answers

Four styles, one click to change

Pick the shape that fits the question, then refine it with a follow-up.

Concise bullets
• Led the migration of a 40-service fleet to Kubernetes
• Cut deploy time from 35 min to 6
• Zero downtime over the 3-month rollout
Full answer
At my last role I owned the platform migration. I started by mapping dependencies, then moved services in
risk order, pairing each move with a rollback plan. The result was a 6-minute deploy and no customer-facing
incidents during the rollout.
STAR
Situation: a slow, fragile deploy pipeline.
Task: cut deploy time without risking uptime.
Action: migrated in risk order with rollbacks. Result: 6-minute deploys, zero incidents.
Technical
Blue-green deploys behind an ingress controller.
Health checks gate traffic shift; HPA on p95 latency.
Secrets via a sealed-secrets operator, rotated per release.

RegenerateShorterMore detailAs code

Answers stream word by word, so you can start talking early
Regenerate, Shorter, More detail or As code
Rate answers with thumbs up or down; ratings are saved with the session
Highlighted, copyable code inside the answer card
Model chosen per mode: a fast model for live answers, a stronger model for coding and screenshots.

Answers

Anthropic Claude
OpenAI
Google Gemini · free tier
Ollama · local
Any OpenAI-compatible endpoint

Transcription

Deepgram · streaming
OpenAI Realtime
Whisper · offline

One OpenAI key covers answers and transcription
Free Gemini key from Google AI Studio
Offline: Whisper + Ollama

Provider usage is billed by your provider under your own account. Free tiers have rate limits.

Coding round? Snap it. Solve it.

Press one key to capture the screen. Dertos AI reads the problem and the conversation so far, then answers in a format you can talk through.

Queue up to 5 screenshots for long problems.
Fix or optimise the code that's already on screen.
Highlighted, copyable code with time and space complexity.
The overlay is never in your screenshot.

Answer⌘↩Screenshot⌘⇧↩Chat⌘⇧CEnd⌘⇧L

‹⌘⇧←›⌘⇧→04:12Clear⌘⇧⌫

QuestionTwo sum: return indices of the two numbers that add up to the target.

Answer:Technicalclaude-sonnet

The question

Given an array of integers and a target, return the indices of the two numbers that add up to it. Each input has exactly one solution.

Code

python

def two_sum(nums, target):
    seen = {}
    for i, n in enumerate(nums):
        need = target - n
        if need in seen:
            return [seen[need], i]
        seen[n] = i
    return []

Key points

O(n) time, O(n) extra space
One pass: check the complement before inserting
Handles duplicates because the index is stored after the lookup

Answer⌘↩Screenshot⌘⇧↩End⌘⇧L

QuestionTwo sum: return indices of the two numbers that add up to the target.

Answer:Technicalclaude-sonnet

The question

Given an array of integers and a target, return the indices of the two numbers that add up to it. Each input has exactly one solution.

Code

python

def two_sum(nums, target):
    seen = {}
    for i, n in enumerate(nums):
        need = target - n
        if need in seen:

Key points

O(n) time, O(n) extra space
One pass: check the complement before inserting
Handles duplicates because the index is stored after the lookup

Profile · Backend engineerActive

Resume.pdfresume
System design notes.mdnotes
Playbook.docxplaybook

Custom instructions

Keep answers under 40 seconds spoken. Mention the Kafka migration when relevant. Avoid buzzwords.

12,480 / 20,000

Your context

Grounded in your story

Dertos AI answers as you would, because it reads what you give it.

Profiles, one per interview or meeting type
Up to 10 documents per profile: PDF, DOCX, TXT or MD, 10 MB each
Names, tags and an include switch for every document
Job description and company notes
Custom instructions up to 20,000 characters
Long documents are split, and only the most relevant parts are sent with each question
78 languages, and answers can follow the language of the question

Mock interviews

Practise out loud, get a score

The AI asks, listens and tells you what landed and what did not.

Pick a role; the AI asks role-specific questions
Answer out loud, like the real thing
Get a score with strengths, improvements and a sample answer
Practice sessions are saved in History

Question 3 of 6 · Backend engineer

How would you design a rate limiter for a public API?

Listening…

7/10

Clear structure, strong trade-offs.

Strength: token bucket explained wellImprove: mention distributed state

AI notes · Platform team sync42 min

Summary

Agreed to pilot the new queue in staging first. Two open questions on retries and alerting.

Questions asked

Who owns the rollout plan? You: platform, with SRE review.
What is the fallback? You: the current queue stays warm for a week.

queuesretriesalerting

Export MDExport JSONRegenerate

Search history…

After the call

Notes you did not have to write

When a session ends, Dertos AI writes the recap and files it in History.

AI notes: summary, questions asked with the gist of your answer, key topics, follow-ups
For interviews: strengths and improvements
Regenerate, copy or export notes
History with search, export to Markdown or JSON, delete
Auto-delete after N days

Built to stay out of the shot

Dertos AI uses your operating system's content protection, so the overlay and the Settings window don't show up in screen shares, recordings or screenshots.

ARInterviewer

YouYou

Answer⌘↩Screenshot⌘⇧↩End⌘⇧L

InterviewerTell me about a time you disagreed with your manager.YouSure, so at my last role…Clear⌘⇧K

QuestionTell me about a time you disagreed with your manager.

Answer:STARclaude-haiku

Situation: Release planning; my manager wanted to ship without load tests.

Task: Protect launch reliability without blocking the date.

Action: Proposed a 2-hour targeted load test on the 3 riskiest endpoints and shared the data.

Result: Found a connection-pool bug, shipped on time, zero incidents in launch week.

Drag the handle or use the arrow keys. Left: your screen with the overlay. Right: what a screen share shows.

Hidden from screen share and recordings.
OS-level content protection keeps the overlay and Settings out of shared screens and captures.
No Dock icon, no menu-bar icon.
Hide Dertos AI from the Dock and ⌘-Tab. The menu-bar icon is off by default.
Normal cursor.
Your pointer stays a regular arrow over the overlay. No hand cursor to give it away on a shared screen.
Click-through mode.
Clicks pass through the gaps to the app underneath. Toggle with ⌘⇧T.
Your data stays local.
Sessions, documents and screenshots stay on your computer. Keys are encrypted with your Keychain.
Offline mode.
Run fully offline with Whisper and Ollama. Nothing leaves your machine.

Good to know: macOS always shows its own microphone and screen-recording indicators, and no app can hide them. System file pickers can't be hidden either. In the Chrome web app, share a single tab or window, never your entire screen.

Friendly errors

Friendly errors: every problem shows one clear fix button, and details go to a local log file, never the screen.

Shortcuts

Every default, yours to change

Global on the desktop app while the overlay is visible. Rebind any of them in Settings → Shortcuts.

Default keyboard shortcuts, part 1
Action	Default
Show / hide overlay
Answer now
Take screenshot
Solve screenshots
Regenerate answer
Make answer shorter
More detail
Toggle auto-answer
Start / stop listening
Toggle click-through

Default keyboard shortcuts, part 2
Action	Default
Move overlay
Scroll answer up / down
Clear session
Cycle answer style
Previous / next answer
Clear answer (stops a streaming one)
Type a question (chat)
Increase / decrease opacity
Panic hide (hide everything)
Quit

Conflict detection: if another action already uses the keys, the row says which one and offers to move it.

Platforms

Mac first, Chrome too

Full stealth needs the desktop app. The web app brings the same copilot to desktop browsers.

Recommended
macOS desktop app
macOS 13 or later · Apple Silicon and Intel
- Full stealth overlay, hidden from screen share and recordings
- Meeting auto-detect for Zoom, Meet, Teams and Webex
- Global shortcuts that work over any app
Get the Mac app
Chrome web app
Desktop Chrome, Edge, Arc or Brave
- Pop-out answer window that stays on top
- Share one tab or window, not your entire screen
- Same answers, notes and history
About the web app
Not yet
Windows
No Windows app yet
- Join the list to hear first.

Answer⌘↩Screenshot⌘⇧↩End⌘⇧L

QuestionTell me about a time you disagreed with your manager.

Answer:STARclaude-haiku

Situation: Release planning; my manager wanted to ship without load tests.

Task: Protect launch reliability without blocking the date.

Action: Proposed a 2-hour targeted load test on the 3 riskiest endpoints and shared the data.

Result: Found a connection-pool bug, shipped on time, zero incidents in launch week.

Walk into your next interview prepared.

Your first 10-minute session is free. No card needed.

Start free Download for Mac

Help us improve Dertos AI?

Every feature, explained

Both sides of the call, labelled live

Four styles, one click to change

Answers

Transcription

Coding round? Snap it. Solve it.

Grounded in your story

Practise out loud, get a score

Notes you did not have to write

Built to stay out of the shot

Hidden from screen share and recordings.

No Dock icon, no menu-bar icon.

Normal cursor.

Click-through mode.

Your data stays local.

Offline mode.

Every default, yours to change

Mac first, Chrome too

macOS desktop app

Chrome web app

Windows

Walk into your next interview prepared.