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Read Aloud vs Helperbird: catalog facts
Read Aloud	Helperbird
Free Free to use; the source is published on GitHub.	Freemium Free to use, with a Pro subscription advertised at $20 a year during a sale.
Browser extension	Browser extension, iOS
Reads a page aloud with one click Custom voices and language settings	Many accessibility tools combined in one extension Dyslexia fonts, spacing controls and colour overlays on any page
Voice quality depends on the voices available to the browser or service Little documentation outside the repository	Some tools require the paid Pro tier Proprietary, closed-source extension
Browser extension	Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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