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inSSIDer vs WhyFi: catalog facts
inSSIDer	WhyFi
Freemium Free with an Oscium account. Advanced features require a paid subscription.	Paid A licence costs $10, with proceeds donated to charity.
Windows, macOS	macOS
Makes channel overlap and interference immediately obvious Client-level inspection of a chosen access point	Shows signal, latency, jitter and DNS timing together Colour-coded status in the menu bar
Requires a free account to use at all Advanced features need the paid MetaGeek Plus subscription	macOS 13 or later only Diagnoses problems rather than offering deep packet analysis
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account 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 22, 2026	Official website Full listing and sources Checked October 1, 2026

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