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Kyte vs Opal
Opal is a polished, iOS-first screen-time and focus app with a subscription and a Mac companion. Kyte is a Mac and Chrome tool built around URL-level blocking and one-time pricing. They overlap, but they are built for different places.
The verdict
Choose Opal if your distraction problem is mainly on your iPhone. Choose Kyte if it is on your Mac and in the browser, and you want URL-level control without a subscription.
Different devices, different jobs
Opal shines on iPhone, where most screen-time damage happens for a lot of people. Kyte does not do iOS; it focuses on the Mac and the browser, where deep work actually happens.
The other difference is control and cost: Kyte blocks at the URL level and is a one-time purchase, while Opal blocks at the app/domain level on a subscription.
Common questions
Does Kyte work on iPhone like Opal?
No. Kyte is a macOS app plus a Chrome extension. If your main problem is your phone, Opal is the better fit.
Is Kyte a subscription like Opal?
No. Kyte's Mac app is a one-time purchase and the Chrome extension is free. Opal is a subscription (around $60/year).