Our take
Pick Customer.io if lifecycle teams who will start on Essentials at $100 / month (5k profiles, 1 million emails) while they open a first Consent state, then book Premium at $1,000 / month yearly when they want custom volume and HIPAA. Pick Fillout if ops / research teams who will stay on Free at $0 / month while they open a first Analytics chart, then buy Starter at $15 / month, Pro at $40 / month, or Business at
Best for
Customer.io Profiles, workflows, and consent you can price from $100
Fillout Forms whose drop-off you chart at $0
Free plan
Customer.io No free plan
Fillout $0 · / month, free forever. Core forms and Analytics on the Free tile
Lowest paid
Customer.io Premium $1/mo yearly
Fillout Starter $15/mo yearly
Next step up
Customer.io Essentials $100
Fillout Pro $40/mo yearly
Coding agent
Customer.io Workflows
Fillout
Runs where
Customer.io Hosted
Fillout Hosted
Watch out
Customer.io Essentials $100 is a starting tile for 5k profiles
Fillout Free is the $0 forever tile, not unlimited seats / branding
Last checked
Customer.io 2026-10-23 · customer.io/pricing
Fillout 2026-10-23 · fillout.com/pricing
lifecycle teams who will start on Essentials at $100 / month (5k profiles, 1 million emails) while they open a first Consent state, then book Premium at $1,000 / month yearly when they want custom volume and HIPAA.
Read the Customer.io pageops / research teams who will stay on Free at $0 / month while they open a first Analytics chart, then buy Starter at $15 / month, Pro at $40 / month, or Business at $75 / month (annual save 20% on the tiles we fetched).
Read the Fillout page
