Side-by-side comparisons with the group scheduling tools people most often ask about, plus a roundup of the best free options.
Doodle, Rallly, When2Meet, Crab Fit and Commonhour compared on what's actually free: accounts, ads, limits, and whether you can send the calendar invite without paying.
Doodle requires an account to create a poll, shows ads on the free tier, and paywalls calendar-invite generation. Commonhour keeps all of that free, with no account wall.
Commonhour keeps what people like about When2Meet (free, no account, one link) and adds a ranked best time, phone-friendly tapping, and a free calendar invite at the end.
Rallly and Commonhour are both free, ad-free, and need no account. The difference: Commonhour lets you lock in a time and send the calendar invite for free.