One-click secure phone number login
Visit website
Do you use Cotter?
What is Cotter?
An authentication service that lets users log in using only their Phone Numbers without a password. Integrate secure phone number login to your web/apps. It’s universal, works across apps, and doesn't require users to have a Cotter account.

Recent launches

Cotter No-Code Passwordless Login
Cotter is the easiest way to add passwordless login to websites built on No-Code website builders like Webflow, Wix, Wordpress, etc. Simply copy and paste a URL and you will instantly be able to authenticate your users!
Cotter 2.0
Cotter is the fastest way to convert users -- we let you build apps and websites with instant, passwordless login. We save engineering time by creating an SDK that developers can copy and paste in minutes!
1 more launch

Cotter reviews

(Cotter is rated 5/5 based on 20 reviews)
Vincenzo Belpiede
Nader Khalil
Helena Merk
, , and 14 others have reviewed Cotter.
All reviews