Real-time transcription
System audio and your mic, transcribed live and labelled by speaker — on-device Apple Speech, no cloud required.
macOS 14+ · Apple Silicon · on-device
Live transcription and an AI copilot for your Mac.
MacTranscribe listens to your call, transcribes it in real time, and answers on demand — in a floating window that stays out of the way. Interviews, sales calls, meetings, coding, study — whatever you're walking into. Runs on your own AI keys.
- Free tier & Pro
- Apple Silicon (M1–M4)
- BYOK — your own AI keys
Answers
Two-pointer approach — O(n)
Walk from both ends; move the smaller pointer inward. One pass, no extra space. Handles the empty array as the base case.
Frame it with STAR
Situation → Task → Action → Result. Lead with the metric: "cut p95 latency
40%."
Transcript
ThemCan you walk me through how you'd reverse a linked list in place?
YouSure — I'd keep three pointers: prev, curr, next…
ThemAnd the time complexity?
YouLinear, O(n) — single pass, O(1) space.
What it does
Hear it. Read it. Answer it.
Everything runs in one small floating window you can resize, dim, or tuck away.
AI answer copilot
Ask any moment and get a tight, spoken-or-typed answer in a dedicated pane. Switch to a stronger model for hard problems on the fly.
Snapshot & read
Grab a region of the screen and OCR it instantly — entirely on-device with Apple Vision. Feed a diagram or a problem straight to the copilot.
Floating & adjustable
Always-on-top, resizable split view, opacity dial. Put the answers where you want and size them as big as you need.
Private & BYOK
Transcription and OCR happen on your Mac. The copilot runs on your AI keys — nothing is shared, each session is isolated.
Global hotkeys
Answer the moment and stop the voice without leaving your call — ⌃⌥A and
⌃⌥S, from anywhere.
Practice mode
Rehearse the interview before it's real.
Load a role and run a realistic dry-run — a mock interviewer that probes your answers, and a coding-assessment board that feels like the real online test.
Merge Overlapping Intervals
Given an array of intervals where
intervals[i] = [start, end], merge all overlapping intervals and return the
non-overlapping set covering all the input.
- Constraints
- 1 ≤ intervals.length ≤ 10⁴
- 0 ≤ start ≤ end ≤ 10⁵
Sample input
[[1,3],[2,6],[8,10]]Expected
[[1,6],[8,10]] Mock interviewer Senior Backend · System Design
Walk me through how you'd shard that intervals table at write time.
I'd range-partition on
start and keep a covering index…Good. What breaks when two writers hit the same boundary?
One sharp follow-up at a time, grounded in what you just said.
Pricing
Start free. Go Pro when you mean it.
The app runs free on your own AI keys. Pro adds the hosted extras — sync, the per-role practice console, and priority builds.
Free
$0forever
Bring your own AI keys. No account required.
- Live transcription + copilot
- On-device screen OCR
- Coding-assessment board
- Your models, your keys
Pro
$12/mo
Everything in Free, plus the hosted extras.
- Cloud session sync
- Hosted practice console (per-role)
- Premium prompt packs
- Priority notarized builds
Compare plans and check out on the pricing page.
Get it
Download MacTranscribe
A single notarized app. Drag it to Applications, grant Screen Recording & Microphone once, and you're set.
↓ Download for macOS macOS 14 Sonoma or later Chip Apple Silicon Signed & notarized BYOK — your own AI keys
Private beta. Bring your own AI keys — MacTranscribe runs on your models, nothing is shared. After download: allow Screen Recording and Microphone in System Settings → Privacy & Security, relaunch once, and you're set.