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Helperbird vs Read&Write: catalog facts
Helperbird	Read&Write
Freemium Free to use, with a Pro subscription advertised at $20 a year during a sale.	Paid Licensed mainly to schools; prices are not listed on the product page.
Browser extension, iOS	Browser extension
Many accessibility tools combined in one extension Dyslexia fonts, spacing controls and colour overlays on any page	Text-to-speech with word highlighting Reads text from images and inaccessible PDFs
Some tools require the paid Pro tier Proprietary, closed-source extension	Aimed at schools rather than individual buyers Pricing requires contacting the vendor
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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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