ExtraBrain vs Mosaic

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ExtraBrain compared with Mosaic
Detail	ExtraBrain	Mosaic
What it does	Local-first AI interview and meeting copilot for Mac	Everyone's AI coding sessions, in one place.
Stage	Startup	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Not given
Pricing	Free core app with local Gemma 4, local Parakeet transcription, and bring-your-own provider setup. Pro: $9.99/month, $99/year, or $179 Lifetime. Eligible monthly and yearly Pro subscriptions include 1,000 ExtraBrain AI credits per billing month. External AI and transcription provider usage billed se	Not given
Key features	Live transcription with local Parakeet or optional Deepgram Screen-aware context and screenshots for structured answers Hidden from screen sharing on Zoom, Google Meet, Teams, and coding platforms Post-session summaries and organized context Local-first data storage on your Mac Support for multiple interview and meeting platforms Desktop app that does not join calls as a bot	Not given
What makes it different	Fully local workflow possible with on-device Gemma and local Parakeet transcription Free to start with optional Pro, unlike bundled subscription services Built around bring-your-own provider access instead of locked-in vendors Designed to stay invisible during screen sharing and recordings	Not given
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	17 no change since last check	30 no change since last check
Trust Flow (Majestic)	7	14
Citation Flow (Majestic)	25	30
Referring domains (Majestic)	49	107

1 detail filled in for both companies.

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