OptinMonster

YES

Replaceable in one session with an AI coding agent.

Popups and slide-ins for collecting email addresses, with exit intent, scroll triggers and page-level targeting, plus split testing.

Promptfree, for everyone, and the only version there is

Build a popup with triggers you control.

STACK
- A JSON config, a script under 3KB, a dialog element

TRIGGERS
- Time on page, scroll depth, exit intent, or a click on a selector
- Exit intent on desktop is the pointer leaving through the top of the viewport
- On mobile there is no such signal. Use scroll depth or a back-navigation guard, and be honest that it is different

FREQUENCY, WHICH DECIDES WHETHER PEOPLE HATE YOU
- Once per visitor per fortnight, remembered in localStorage
- Never on the first page of a first visit
- Never on a page the visitor arrived at from a search for support

ACCESSIBILITY
- A real dialog element, focus trapped, Escape closes, focus returned on close
- A popup that traps a keyboard user is a bug, not a conversion tactic

Include the trigger set, the frequency rules and the dialog handling.

What you lose

Exit-intent detection tuned across many sites, including on mobile where there is no cursor to track
Templates that have been tested against real conversion data
Split testing with results presented plainly

If you would rather not build

A dialog element and a small script
Any newsletter tool's own embed
An inline form, which converts better than most popups

The escape hatch

open source · no votes, no paid placement

Formbricks

Self-hosted targeted prompts with trigger rules already built.

formbricks/formbricksfree · open source

Listmonk

Handles the list once the popup has collected the address.

knadh/listmonkfree · open source

Why this verdict

our own opinion · changed only by a person

84/100

Verdict yes at 84. The triggers are easy; the frequency rules and keyboard handling are what separate a popup from a complaint.

History

tracked since 10 Aug 2026 · nothing is ever overwritten

Interest · last 30 days

Nothing recorded yet. This chart fills in once the page has visitors, votes or prompt copies — it will not draw a flat line to look busy.

Questions about OptinMonster

answered from the record above

Is OptinMonster free?

No — the plan we track is $16 a month. Basic at around $16/month billed annually; monthly billing costs more.

Can you replace OptinMonster by building your own?

YES. Replaceable in one session with an AI coding agent. Replacement score 84 out of 100, build time one session. Read what you lose before you decide.

How much does OptinMonster cost?

$16 a month on Basic — $192 a year. Recorded 10 Aug 2026.

What do you lose by replacing OptinMonster?

Exit-intent detection tuned across many sites, including on mobile where there is no cursor to track; Templates that have been tested against real conversion data; Split testing with results presented plainly. If any of those carry weight for you, keep paying.

Is there an open-source alternative to OptinMonster?

Yes: Formbricks, Listmonk. The prompt on this page is for when you want it your way instead.

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