Comparison

Agenda (Notes meets Calendar) vs Obsidian

Agenda (Notes meets Calendar) and Obsidian both land on Depends.

Agenda (Notes meets Calendar)

Depends

Confidence: Medium

Buy if you are an Apple user who wants notes organized around calendar events; the core app is free to try.

Depends

Confidence: Medium

Buy it if you're an individual who wants a powerful, private, local-first knowledge base and will invest time learning it.

Agenda (Notes meets Calendar) versus Obsidian
Compare	Agenda (Notes meets Calendar)	Obsidian
Verdict	Depends	Depends
Best for	Apple users attaching notes to meetings and events	Personal knowledge bases
Who it's not for	Teams needing shared or collaborative notes	Teams needing shared, out-of-box collaboration
Privacy	No known public vulnerabilities found in the sources reviewed.^⁹	Private, local-first design with third-party audits, but the plugin ecosystem has attracted real malware abuse.
Support quality	Founders answer users in active forum	No direct support-quality evidence found.
Public sentiment	Forum feedback is largely positive, with recurring complaints about premium pricing and open requests for password protection and Reminders integration.^²	Users love the flexibility and adaptability but frequently flag the steep learning curve, and some long-time fans are drifting away.¹³
Biggest gotcha	Full functionality requires a paid unlock; users describe pricing as heavy on the purse strings^⁴	Malicious plugins have been abused to deploy malware; vet third-party plugins carefully.