1. ConvertFlow
Best for: Higher-AOV Klaviyo brands that want quiz funnels, bundles and personalized offers feeding Klaviyo email and SMS.
Starting price: Free to install with powered-by links. Paid plans start at $29/mo for 10k monthly views, $99/mo for 30k views and CRM integrations, and $299/mo+ for 100k+ monthly views.
ConvertFlow runs alongside Klaviyo rather than replacing it. Landing pages and popups capture email and SMS subscribers, quiz funnels recommend products and bundles, and every answer syncs to Klaviyo profiles so flows and segments can use what the shopper told you. Returning subscribers can see personalized popups and offers based on their Klaviyo segment and quiz answers. ConvertFlow AI drives agentic funnel experimentation across the full funnel, with automated A/B testing for landing pages, popups, quiz funnels and site content.
Strengths
- Quiz answers sync to Klaviyo profile properties for email and SMS
- Product recommendation quizzes and bundles
- Personalized popups and returning-subscriber messages by Klaviyo segment
Limitations
- Paid tool on top of your Klaviyo plan
- Full-funnel A/B testing is on the Pro plan (Personal and Prime include funnel variants)
- Full-funnel builds take more setup than a single popup; done-for-you help is available
2. OptiMonk
Best for: Klaviyo brands that want AI-assisted popups with a free starting point.
Starting price: Free plan; paid from $19/mo billed annually ($29/mo monthly)
OptiMonk connects to Klaviyo and adds website personalization, product recommendations and AI campaign suggestions beyond what native forms offer.
Strengths
- Permanent free plan
- Product recommendations and personalization
- AI agent that suggests tests
Limitations
- Pricing scales with monthly pageviews
- Campaigns stop at the pageview quota
- No landing page builder
3. Alia
Best for: Lower-AOV Shopify brands growing email and SMS lists with discount-led popup offers.
Starting price: From $100/mo for up to 20K visitors (Shopify App Store pricing)
Alia is a Shopify popup builder with native Klaviyo, Postscript, Attentive and Omnisend integrations that uses AI to test popup offers and designs automatically. Alia was acquired in March 2026 by Dotdigital, an email and SMS platform that competes with Klaviyo.
Strengths
- Automated AI testing of offers
- Native Klaviyo and SMS integrations
- White-glove onboarding
Limitations
- Built around discount-led signup offers, which suit lower-AOV, impulse purchases more than considered, higher-AOV purchases
- Shopify only
- Priced by total monthly store visitors; Alia doesn't say visitors who never see a popup are excluded, even though its popups mainly target new visitors
- No free plan
4. Wisepops
Best for: Larger Klaviyo brands that want more onsite channels and controlled experiments.
Starting price: From $83/mo billed annually per its pricing FAQ (Shopify App Store lists higher plans; confirm with sales)
Wisepops integrates with Klaviyo and adds embeds, bars, an on-site notification feed and web push, with control-group experiments.
Strengths
- Control-group A/B experiments
- Many onsite channels
- Multi-step campaigns of up to 10 steps
Limitations
- No free plan
- Demo-led pricing
- Pricing scales with pageviews
5. Justuno
Best for: Klaviyo brands that want AI timing and visitor identification for abandonment flows.
Starting price: From $59/mo (up to 10K visitors)
Justuno integrates with Klaviyo and adds AI Smart Timing, AI product recommendations and anonymous visitor identification that can feed abandonment flows.
Strengths
- Anonymous visitor identification
- AI timing and recommendations
- Done-For-You plan available
Limitations
- Pricing scales with visitors
- Lite plan caps segments and workflows
- No free plan
6. Digioh
Best for: Enterprise Klaviyo brands that want quizzes and preference centers with managed support.
Starting price: From $500/mo (up to 50K monthly visits)
Digioh has a deep Klaviyo integration and combines popups, quizzes, preference centers and landing pages, with a dedicated customer success manager.
Strengths
- Deep Klaviyo integration
- Preference centers and quizzes
- Managed onboarding
Limitations
- Landing pages are built for data capture, and personalization runs through its popups and pages rather than a full funnel across your site
- Higher entry price
- One published pricing tier
- No free plan
7. OptinMonster
Best for: Smaller stores that want more templates and targeting rules on a budget.
Starting price: From $9/mo billed annually for the first year (renews higher)
OptinMonster connects to Klaviyo and offers 700+ templates, gamified campaigns and broad targeting rules.
Strengths
- Large template library
- Broad targeting rules
- Low first-year price
Limitations
- Renews at a higher price
- A/B testing and Shopify on higher tiers
- Shopify App Store rating of 2.5/5 from 15 reviews
.svg)
