Best Conversion Optimization Tools for Shopify in 2026

01

Rebuy

Paid

AI-powered upsells and recommendations across every Shopify touchpoint

Rebuy is the most widely used post-purchase upsell tool for Shopify. It shows targeted product recommendations immediately after checkout, when buyer intent is highest, and allows offers based on what was just purchased. The AI recommendation engine improves over time with order data. A well-configured Rebuy setup typically adds 5 to 15 percent to average order value without adding any friction to the checkout flow itself.

• check_circleSmart Cart. In-cart upsell and cross-sell recommendations driven by AI that adapts to each shopper's real-time browsing and purchase behaviour.
• check_circlePost-Purchase Upsell. One-click upsell offers shown immediately after checkout, before the confirmation page, to lift AOV without interrupting the flow.

02

OptiMonk

Freemium

Personalised on-site messages that lift conversion without annoying shoppers

OptiMonk goes further than a standard popup tool. It supports gamified experiences (spin-to-win, scratch cards), personalised product recommendation overlays, and dynamic countdown timers that respond to visitor behaviour. The targeting rules are granular: you can show different offers to first-time visitors, returning visitors, and cart abandoners without writing any code.

• check_circleBehaviour-Based Triggers. Fire messages on exit intent, scroll depth, time on page, cart value, and inactivity, targeting the right moment in the session rather than just on page load.
• check_circleSmart Suppression Rules. Automatically suppress messages for existing subscribers, recent purchasers, and returning visitors to avoid showing irrelevant or annoying offers.

03

Privy

Freemium

Pop-ups that grow your list without annoying shoppers

Privy built its reputation on exit-intent popups before adding email marketing. The popup targeting is more granular than most entry-level tools, and the email flows are tightly scoped to the post-capture and post-purchase journey. At its price point it is the most accessible entry point in this category, and the freemium tier is genuinely useful for stores that are still in the list-building phase.

• check_circleExit-Intent Detection. Detects cursor movement toward the browser bar and fires an offer just before the visitor leaves, recovering shoppers who would otherwise have bounced.
• check_circleCart Abandonment Flows. Triggers timed pop-ups, follow-up emails, and SMS sequences when a visitor leaves items in their cart without checking out.

04

Justuno

Freemium

AI pop-ups and recommendations that adapt to every visitor

Justuno is the most sophisticated popup and onsite engagement tool in this list. Its rule-based targeting can differentiate between UTM sources, cart contents, geographic location, and customer segment, then serve a different popup experience to each. For operators running multiple paid traffic sources with different audiences, Justuno's targeting depth more than justifies the step up in complexity.

• check_circleAI Product Recommendations. On-site recommendation engine surfaces items each visitor is most likely to buy based on their real-time browsing and full purchase history.
• check_circleBehaviour-Adaptive Pop-Ups. Promotional overlays adapt to each visitor's session data (cart contents, browsing history, and referral source) for maximum contextual relevance.

05

Bold Commerce

Freemium

The Shopify app suite for subscriptions, upsell, and checkout

Bold Commerce covers a specific conversion use case: getting customers to spend more per order through bundled offers or switch to a subscription model for repeat purchases. Its bundle builder lets you create fixed and dynamic bundle options with discount logic, and the subscription billing handles recurring revenue without custom development. The focus is narrower than the other tools here but goes much deeper on the subscription and bundle conversion surface.

• check_circleBold Subscriptions. Flexible subscription management with customisable billing cycles, skip, pause, and swap options, plus a fully branded customer self-service portal.
• check_circleBold Upsell. Product and bundle upsell offers shown on the product page, in the cart, and in the post-purchase funnel to lift AOV at every step.