Upsell & Cross Sell — Selleasy

Selleasy is one of the best free upsell and cross-sell apps for Shopify merchants in 2025. It offers comprehensive features including frequently bought together bundles, product recommendations, cart upsells, and post-purchase suggestions. The app has excellent 4.9/5 star ratings from 1,905+ reviews and provides free setup assistance with personalized Zoom calls. Merchants report significant increases in average order values and appreciate the user-friendly interface with customizable options.

Free alternatives to Selleasy include Shopify Bundles (free offer for fixed bundles and multipacks), Bundler - Product Bundles (free plan available with bundle offers and volume discounts), and ReConvert Upsell & Cross Sell (free plan available with checkout upsells and product recommendations). These alternatives offer similar upsell and cross-sell functionality but may have different feature sets and pricing structures. Selleasy stands out with its comprehensive campaign types and excellent customer support.

To set up a frequently bought together campaign: 1) Click 'Create campaign' and choose 'Frequently bought together (List)', 2) Select trigger product types (all products, specific products, tags, or collections), 3) Choose offer products (specific products, variants, or automatic AI recommendations), 4) Set optional discounts with multiple tiers, 5) Configure campaign settings like quantity picker and product preselection, 6) Add the FBT List block to your theme below the Add to cart button. The app provides step-by-step guidance and free setup assistance.

If your Selleasy widget isn't showing after theme changes: 1) Navigate to 'Online store' > 'Themes' > 'Customize' for your theme, 2) Click on 'App embed' and activate the app, 3) Save and exit. For testing in draft themes: 1) Deactivate the app in your live theme, 2) Go to draft theme customization, 3) Activate the app in draft theme, 4) Save. If issues persist, contact support for free setup assistance using their <a href='https://calendly.com/logbase/shopify-setup'>Zoom call booking</a> system.

To translate Selleasy widgets to multiple languages: 1) Navigate to 'Campaign section' and select your campaign, 2) Scroll down and ensure the required language is added in the multiple language section, 3) Go to 'Customize' > 'Edit widget' for the campaign, 4) Click on 'Widget appearance' > 'Customize' > 'Text and translations', 5) Enter the translations for each widget text, 6) Save settings. The app supports English, German, French, Spanish, Dutch, Portuguese (Brazil), and Chinese (Simplified) for global e-commerce stores.