ApiNotes vs PHP Upgrade Risk Audit

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

ApiNotes compared with PHP Upgrade Risk Audit
Detail	ApiNotes	PHP Upgrade Risk Audit
What it does	API documentation tool with automatic changelogs and breaking-change detection	Understand likely PHP upgrade risks before changing the server
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	HK
Pricing model	Freemium	Open source
Pricing	Starter: Free (1 API, public only, up to 25 subscribers); Team: $19/month (5 APIs, unlimited subscribers)	Not given
Key features	Automatic API Changelog Generation Breaking-Change Detection & Diffs Interactive REST API Documentation OpenAPI 3.1, 3.0 & Swagger 2.0 Support Code Examples in 10+ Languages Custom Domain Support GitHub Integration OpenAPI Validator Spec Diff Tool cURL to OpenAPI Converter	Select target PHP version Scan plugins and themes for compatibility patterns Review file-level static analysis findings Run locally without uploading source code
What makes it different	Auto-written changelog with breaking-change alerts on every spec update 80% cheaper than Stoplight and ReadMe 5-minute setup with no complex configuration Interactive API testing built into documentation Automatic subscriber notifications on spec changes	No source code upload required Component-level findings review
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)	25 −1 (down) since last check	2 no change since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	26	15
Referring domains (Majestic)	65	5

4 details filled in for both companies.