ZapYap vs PromptSign.ai

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

ZapYap compared with PromptSign.ai
Detail	ZapYap	PromptSign.ai
What it does	AI-powered password manager and secure chat combined	Code signing for AI skills and agents
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Not given
Pricing	Free tier: unlimited devices, AI chat, passwords, todolist, TOTP. Premium: pay only for storage and AI. Family Plan coming soon.	Not given
Key features	AI chat with natural language processing Zero-knowledge encryption with Argon2 and DEK Architecture Unlimited device sync on all plans Password generator Todolist with color tagging and reminders Save and organize web articles Multi-language support with real-time translation IP address verification for new logins Device ID verification and mobile notifications	Sign skills and agents with verified identity authentication Verify file integrity using SHA-256 fingerprints Offline verification without internet connection Public transparency log for accountability Revoke trust for compromised keys or bad actors Support GitHub, Google, Microsoft and company account authentication Command-line tool for integration with Claude and Codex hooks
What makes it different	Free tier includes AI chat and unlimited devices Built-in AI chat integrated with password manager End-to-end encryption with on-device local encryption Available across all major platforms and browsers Full vault access offline on all plans	Immutable transparency log that prevents silent key revocation Blocks unsigned or tampered instructions in Claude Code and Codex integration
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)	3 −5 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	9	1
Citation Flow (Majestic)	20	19
Referring domains (Majestic)	32	27

3 details filled in for both companies.

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