Simple Trust Portal 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.

Simple Trust Portal compared with PromptSign.ai
Detail	Simple Trust Portal	PromptSign.ai
What it does	Affordable, secure document sharing for business — designed for SOC 2 and compliance docs	Code signing for AI skills and agents
Stage	Not given	Not given
Founded	Not given	Not given
Based in	CA	Not given
Pricing model	Paid	Not given
Pricing	One plan: $16/month billed annually at $192/year (save $48/year compared to monthly), or $20/month billed monthly. First month free. Includes unlimited documents, unlimited access requests, PDF watermarking, NDA management, custom domains, SSO support, team collaboration, custom branding, complete a	Not given
Key features	Secure document sharing with watermarked PDFs Access request management with approval workflow Enterprise SSO support for team access Custom domains for branded trust portal PDF watermarking with requester information Team collaboration for document management Version history tracking for audit compliance Time-limited and download-restricted access links Comprehensive audit logs and download tracking NDA acceptance tracking and management	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	Affordable alternative to $10k kitchen-sink trust centers Simple setup that takes minutes to get running Transparent pricing with no hidden fees or upsells Security practices aligned to NIST and CIS frameworks All-in-one platform with no expensive add-ons required	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)	12 −2 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	21	1
Citation Flow (Majestic)	28	19
Referring domains (Majestic)	63	27

3 details filled in for both companies.

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