OptinMonster vs Justuno vs OptiMonk: which fits your site?

How do OptinMonster, Justuno and OptiMonk compare on pricing?

You can’t put one price tag next to each and call it done. OptinMonster counts campaign impressions, Justuno counts unique visitors and OptiMonk counts pageviews. What you can compare: whether there’s a free plan, what the first paid tier costs, and what’s on higher tiers only.

OptinMonster skips the free tier and offers a 14-day money-back guarantee instead. Paid plans start at $21/month; A/B testing starts on Plus ($57/month), exit intent on Pro ($87/month) and Shopify on Growth ($147/month).

Justuno is free up to 2,000 visitors, with no support on the free plan. Lite starts at $39/month and includes A/B testing, Shopify and Visitor ID; Commerce AI and Audience Sync are on higher plans.

OptiMonk covers up to 10,000 pageviews on the free plan with every feature, including support. Paid plans start at $29/month; only the pageview limit changes between tiers.

Which of the three has real A/B testing, not just basic split tests?

Two things separate real testing from basic split tests: a control group (part of your traffic sees no campaign) and multivariate testing (several elements changed at once).

OptinMonster changes one element at a time and doesn’t natively support a true control group, so you’d need a blank-campaign workaround to approximate one. A/B testing starts on the Plus plan ($57/month).

Justuno builds control-group and multivariate testing into the platform. Its multivariate tool compares up to 10 variations across multiple elements and keeps the best-performing combination live automatically. Both are available from the Lite plan ($39/month).

OptiMonk includes control-group, in-campaign format, static vs. animated and multivariate testing on every plan, including free, set up in a conversation with the AI Agent.

How do the three compare on templates and design?

OptinMonster leads on template count: 700+, organized by industry, campaign goal and season. Its drag-and-drop builder handles layout, and MonsterEffects adds pre-built animations without code.

Justuno offers hundreds of templates and a Design Canvas with deep CSS and JavaScript access and 80+ targeting rules. That flexibility asks more of whoever’s building.

OptiMonk doesn’t use a fixed template library. The AI Agent reads your domain and designs each campaign to match your brand, then applies changes you describe in plain language; a drag-and-drop editor is there for fine-tuning.

How do they compare on AI and retargeting?

OptinMonster offers AI Popups, which suggests rewritten headlines and copy based on what has converted before. Smart Tags (Pro+) add rule-based text personalization.

Justuno recommends products from your catalog with Commerce AI. Visitor ID identifies anonymous visitors who haven’t filled out a form, and Audience Sync pushes those segments into Google and Facebook Ads as custom audiences.

OptiMonk builds, edits and tests full campaigns in a conversation with the OptiMonk AI Agent, and suggests what to try next. Dynamic Product Recommendations are on every plan. There’s no anonymous visitor identification or ad-platform sync.

Which is best for Shopify stores?

OptinMonster needs its Growth plan ($147/month) to connect to Shopify. Targeting is then limited to five cart and product rules, with no documented way to sync or generate discount codes.

Justuno works on every plan, including free, syncs products, orders and customer profiles, and reuses your existing Shopify discounts automatically. It has the largest Shopify review base of the three.

OptiMonk also works on every plan, including free. It generates new discount codes, pushes them to Shopify’s Discounts admin and applies them at checkout, and product recommendations support add-to-cart from the popup.

Which tool is easiest to use?

OptinMonster starts with a guided wizard that asks about your site and goals, then recommends a template. Everything after that happens in one drag-and-drop editor.

Justuno splits the work across two tools: a Workflow Builder for logic and a Design Canvas for visuals. That means learning two interfaces and configuring from 80+ targeting rules.

OptiMonk builds a starting campaign from a prompt with the AI Agent, reading your domain for brand fit. You change design, copy or language by describing it, and a drag-and-drop editor is there too.