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Avidnote vs Petal: catalog facts
Avidnote	Petal
Freemium Sign-up is free to start, with paid plans listed on its pricing page.	Freemium Free to start, with paid options for more use.
Web	Web
Paper and notes shown side by side Ask questions, summarize and proofread uploaded documents	Answers cite the source documents Document storage with automatic metadata extraction
Web only, with documents uploaded to the service AI-generated text needs careful checking before academic use	Documents are stored in Petal's cloud Requires an account
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.