ApiNotes vs Altseat

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 Altseat
Detail	ApiNotes	Altseat
What it does	API documentation tool with automatic changelogs and breaking-change detection	Run multiple Claude Code, Codex and Kimi Code accounts on one Mac with automatic usage tracking and handoff
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Starter: Free (1 API, public only, up to 25 subscribers); Team: $19/month (5 APIs, unlimited subscribers)	Free for up to 2 accounts total across all three tools. Lifetime license USD 12 one-time (launch price through 30 November 2026, then USD 19), allowing up to 10 accounts per tool on one Mac. One payment, no subscription.
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	Menu bar usage display for Claude Code and Codex accounts Automatic account switching when limits reached Automatic handoff for Claude Code sessions Shared settings and sessions across accounts MCP server synchronization across Claude accounts Support for up to 10 accounts per tool Signed and notarized by Apple In-app updates from the menu bar 14-day refund guarantee
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	Automatic handoff continues conversations seamlessly between accounts without interruption Never handles passwords or refreshes tokens, keeping credentials secure Only switches between processes, never changes login of running session Real-time usage visibility for multiple Claude Code and Codex accounts in one place One-time lifetime license with no subscription required
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	Not checked yet no change since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	26	4
Referring domains (Majestic)	65	1

5 details filled in for both companies.

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