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Best free Checkout - Other Shopify apps in 2026 [Updated]
PickYourApp Review Team
6 min read
•
Aug 09, 2026
The best free Shopify checkout apps help merchants customize their payment methods, add cash on delivery options, implement upsells, and optimize the entire checkout experience. From setting COD fees and order limits to displaying product properties and creating one-click checkouts, these tools give store owners complete control over how customers complete their purchases. Whether you need to hide payment options based on conditions, add post-purchase offers, or simplify order cancellations, these free apps provide essential features to improve conversion rates and average order value without any upfront investment.
| Name | Rate on Shopify | Price | Free trial | Key features |
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#1. Validate checkout, add payment, shipping & discount rules, checkout blocks & post-purchase upsells
SMART Checkout Rules & Upsells gives merchants complete control over their checkout experience with flexible validation rules and customization options. Hide, block, sort, or rename payment methods and shipping options based on conditions like customer tags, country, cart value, products, or discount codes. Perfect for managing high-risk orders, blocking COD or specific payment methods like PayPal and Credit Card by customer criteria. Grow your average order value with one-click post-purchase upsells and downsells that appear after checkout. Add checkout blocks including banners and discount codes with conditional display rules. Apply checkout validation and discount logic based on cart total, customer tags, or delivery method. Ideal for B2B stores, international shipping flows, and merchants who need advanced checkout control without coding. Control your checkout rules and increase conversions with smarter upsell strategies. -
#2. Revolutionized checkout optimization with branded shipping protection, cashback, & climate impact.
Deliver a better post-purchase experience with shipping protection, cashback rewards, and sustainability tracking all in one solution. This eco-friendly checkout platform helps you manage claims efficiently while showing customers their environmental impact through customizable displays and counters. From white-labeled emails to branded claims processing, you can build customer trust and encourage repeat purchases while making a real difference. Track sustainability metrics and claims data directly in your merchant portal, and customize the entire experience to match your brand's unique needs and customer service goals. -
#3. COD Toolkit helps merchants manage and customize the Cash on Delivery option with flexible rules.
COD Toolkit gives you complete control over Cash on Delivery payments in your Shopify store. Create custom rules to manage when and where COD is available based on order values and delivery locations. You can block COD for specific price ranges or regions to reduce payment risks. The app also lets you personalize the COD payment option name to match your store's branding. Whether you want to limit COD availability or offer it selectively, this toolkit helps you set up flexible conditions that work for your business needs. Perfect for merchants who want to offer Cash on Delivery while maintaining control over their payment options. -
#4. Add warnings for Prop 65 (P65), product availability, shipping delays & age verification disclaimer
Warn Checkout Rules & Popups helps you add customizable warnings and popups to your product pages and checkout. Display Prop 65 warnings, shipping delay notices, age verification disclaimers, and product availability alerts to keep customers informed. Add unlimited warnings that appear globally across your store or target specific products, collections, and countries. Perfect for compliance with CCPA/GDPR regulations and EU withdrawal requirements. Show textual notes, disclaimers, FAQ popups, product labels, and badges wherever needed. Customize warning styles, text, images, and buttons to match your store's design. Block checkout when critical warnings appear to reduce fraud and chargebacks. Easily alert customers about shipping restrictions to certain countries or add global notes to product collections. -
#5. Smart Flow: post-purchase upsells, one-click setup, templates, analytics, bundles set up in minutes!
Maximize your Shopify store's revenue with Smart Flow's post-purchase upsell solution. Create targeted offers using our drag-and-drop builder and ready-made templates, or customize your own designs. Drive sales through personalized one-click upsells, strategic A/B testing, and thank you page offers. Set urgency with countdown timers and quantity limits while giving customers flexible variant options. Track your success through detailed analytics showing conversion rates and revenue per funnel. Smart Flow makes it simple to reduce cart abandonment, improve customer satisfaction, and generate repeat purchases - all with an easy setup process that gets you running in minutes. -
#6. Convert your checkout into a conversion engine with custom checkout rules, fields and customizer.
Customize your Shopify Plus checkout with banners, custom fields, and smart checkout rules to improve conversions. This checkout customizer lets you add trust messages and promo code blocks directly at checkout, edit cart items, and collect GST/VAT or custom notes from customers. Hide or reorder payment options using advanced checkout logic to guide shoppers and reduce drop-offs. Built on Shopify Checkout Extensibility, it helps Plus merchants create a clearer checkout experience that converts better. -
#7. Customer account editor and checkout editor with dynamic blocks and extensibility
Customize customer accounts, checkout, and post-purchase pages with flexible UI extensions and dynamic blocks. This app lets you add custom components to account pages, order status, and thank you pages without coding. Add checkout blocks like custom fields, trust badges, payment icons, age validator, and delivery instructions to improve your checkout experience. Include account blocks such as order notes, special requests, download invoice, order count, and report a problem features to strengthen customer communication. The app supports upsell products, SMS consent, gift messages, image with text, proof of shipment, installation guides, warranty documents, announcement bars, and FAQs. You can also add quantity selector and variant selector for checkout line items. Replace legacy limitations with modern extensibility that helps increase engagement and conversions through better checkout and account customization. -
#8. Monetize your thank-you page with a post purchase offers network and bring shoppers back
Pier39 AI helps you monetize your thank-you page and order status pages with post purchase offers from complementary brands. After checkout, shoppers discover curated offers and earn store credit or discount coupons for your store when they engage. You earn additional revenue from every interaction while driving repeat purchases without extra marketing effort. The app handles offer matching, merchant onboarding, and targeting automatically with no code required. Real-time reporting tracks engagement, revenue, and customer return rates. Turn every order into an opportunity to generate more income and bring customers back to shop again. -
#9. Increase AOV with 1-click checkout upsell funnels, post purchase upsell and thank you page upsell.
Oak Checkout Upsell helps you increase average order value by showing targeted upsell offers at checkout, post purchase, and on thank you pages. For Shopify Plus stores, add checkout upsells before payment to capture more value from every buyer. All customers can use one-click post purchase upsells that don't require re-entering payment details, plus thank you page offers that keep selling after checkout. Create upsell funnels based on purchased products, collections, and order conditions. Choose product or collection-based offers, show the same product from the cart, or use Shopify product recommendations. The clean admin interface makes it easy to set up your first upsell funnel in just minutes. Start growing your AOV today with checkout upsell funnels that buyers find simple to navigate. -
#10. ReConvert clients with One Click Upsell offers to improve AOV - Post Purchase Upsell and Survey.
ReConvert Post Purchase Upsell helps merchants increase their average order value by displaying personalized one-click upsell offers right after checkout. Customers can accept these offers without re-entering payment details, making it simple to reconvert them into additional sales. The app allows you to customize your Thank You page to improve post-purchase engagement and build tailored upsell funnels with upsells, downsells, and surveys that match your store's branding. You can create offers automatically using AI or build custom offers manually based on your needs. ReConvert also includes post-purchase survey features, letting you add quizzes, votes, and questions to gather valuable customer insights. Setup is easy with no coding required, and the design can be customized to fit seamlessly with your store.
