CortexOS vs Ambiguous

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

CortexOS compared with Ambiguous
Detail	CortexOS	Ambiguous
What it does	The zero-knowledge AI journal with on-device AI that reads what you wrote and reflects on it, keeping your words on your phone.	The workspace built for human-AI collaboration
Stage	Startup	Not given
Founded	Not given	Not given
Based in	MT	US
Pricing model	Freemium	Freemium
Pricing	Free: 10 encrypted entries per month. Premium Monthly: $7.99/month. Premium Annual: $49.99/year. Lifetime: $99.99 one-time purchase. All paid plans include a 7-day free trial.	Free: up to 5 teammates, 1,000 AI actions/month, all 18 apps, no credit card required. Pro: $7/seat/month (billed annually) or $8.40/seat/month (billed monthly) for seats after the first 5, unlimited members, 1,000 AI actions/month plus top-ups. Top-up packs: $5 for 500 actions, $20 for 2,500 action
Key features	On-device Llama 3.2 language model with no cloud calls 20+ emotion detection with intensity scoring Deep Analysis: multi-paragraph AI reflections connecting to past entries Cognitive distortion alerts based on CBT principles On-device voice transcription with OpenAI Whisper Zero-knowledge cloud vault with AES-256-GCM encryption Memory layer that learns your patterns over time on-device Behavioral pattern detection and cognitive pattern naming 7-day chapters that automatically organize journaling into narrative arcs Therapist PDF reports for sharing with mental health professionals	Collaborative document editing for humans and AI Email and chat integration MCP and CLI agent integration Real-time collaboration Mobile apps for iOS and Android Data export to standard formats API access with workspace-scoped keys Webhooks and integrations Audit logs
What makes it different	Only journaling app combining zero-knowledge encryption with on-device AI analysis Open-source cryptographic core published under MIT license on GitHub AI runs entirely on-device with zero network calls for data processing Recovery phrase creates permanent data deletion if lost, proving zero-knowledge works	AI agents work natively in the same apps as humans without separate interfaces Never re-architect workflows when switching AI agent providers Agents handle formatted document editing correctly
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)	15 +3 (up) since last check	35 +1 (up) since last check
Trust Flow (Majestic)	9	6
Citation Flow (Majestic)	20	32
Referring domains (Majestic)	17	54

6 details filled in for both companies.

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