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iAsk.ai vs Perplexity: catalog facts
iAsk.ai	Perplexity
Free Described by its developer as free to use.	Freemium Free to use, with a paid Pro tier for more advanced search.
iOS, Web, Browser extension	Web
Answers include citations Adjustable response length and several modes	Answers include citations to sources Follow-up questions keep context
Oriented towards student homework questions Needs an internet connection	AI answers can still misread or misstate sources Advanced features sit behind a paid tier
Downloadable app, Web application, Browser extension	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 23, 2026

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