PaidCheck vs SingleFax

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

PaidCheck compared with SingleFax
Detail	PaidCheck	SingleFax
What it does	Daily reconciliation of Stripe against who actually has access in your app	Send one-time faxes online from $0.99, pay only if delivered
Stage	Startup	Not given
Founded	Not given	Not given
Based in	US	US
Pricing model	Not given	Not given
Pricing	Leak report: free one-time reconciliation. Solo: $19/month for 1 app with daily checks and alert emails. Multi-app: $49/month for up to 5 apps with daily checks and alerts.	One-time fax: from $0.99 for up to 10 pages, then $0.08 per extra page (max 1,000 pages), pay only if delivered. 30-day fax number: $4.99 one-time payment. Lifetime Basic fax number: $97 one-time payment. Lifetime Pro fax number: $147 one-time payment. Standard Plan (monthly): $6.58/mo or $79/year (
Key features	Daily reconciliation checks across multiple apps Supports Lovable, Bolt, Cursor and Supabase apps Encrypted key storage with AES-256-GCM Calculates revenue at risk for each issue	Send faxes from browser, email, or mobile app Pay only if delivery succeeds Support for up to 1,000 pages per fax Timestamped delivery confirmation Searchable AI transcripts for received faxes HIPAA Secure workflow with signed BAA IRS form filing with carrier proof Chrome extension for PDF faxing
What makes it different	Read-only by design with no ability to write, refund or charge Catches revenue-threatening issues AI-generated billing code typically misses Minimal data exposure via email, plan and active status only	No account or subscription required for one-time faxes Pay only if fax delivers successfully Integrated IRS filing with official transmission proof Lifetime fax numbers with no monthly rental fees
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)	Not checked yet no change since last check	25 no change since last check
Trust Flow (Majestic)	0	1
Citation Flow (Majestic)	12	27
Referring domains (Majestic)	1	36

5 details filled in for both companies.

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