OTPfill vs Keyword Cluster

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

OTPfill compared with Keyword Cluster
Detail	OTPfill	Keyword Cluster
What it does	Autofill OTP codes from your email	Chrome extension for keyword clusters and SEO insights
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Paid	Free
Pricing	Free for 7 days, then $29 one-time payment. Includes two inboxes and updates. Unlimited inboxes available for $5 per month.	Not given
Key features	Autofills one-time passcodes from email Auto-fills codes from the current site Reads only recent emails from last three minutes Does not store or log email contents	Keyword clustering by search intent Long-tail keyword discovery AI-powered keyword grouping Real-time insights on Google and Bing Topic cluster identification Related search query suggestions No account or login required Support for Google, Bing, and YouTube
What makes it different	One-time purchase model with no subscription required	Shows keyword clusters directly in search results without leaving Google or Bing Completely free with no account needed Eliminates need to switch between multiple SEO tools Groups keywords by search intent for better content alignment
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	9 no change since last check	11 no change since last check
Trust Flow (Majestic)	6	3
Citation Flow (Majestic)	11	23
Referring domains (Majestic)	10	50

4 details filled in for both companies.