Shopify App Comparison 2026

Checkout Plus vs Upcharge Fees & Product Addons: Shopify App Comparison (2026)

Checkout Plus

5.095 reviews
VS

Upcharge Fees & Product Addons

4.5137 reviews

Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for Checkout and Upcharge Fees & Product Addons to find the best fit for your store.

Built for Shopify

The most effective Shopify App for increasing sales and customer checkout experience with upsells, gift messages, trust badges, custom rules, and much more.

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Key Features

  • Upsells: Sell more at checkout increasing average order value (AOV)
  • Social Proof: Establish trust with Reviews, UGC & Trust Badges at Checkout
  • Gift Messages, Delivery Instructions & Surveys: Collect information at Checkout
  • Post Purchase: Thank you, Order Status & Customer Account Customizations
  • Payment, Shipping Methods & Order Limits: customize at checkout with conditions
Built for Shopify

Our surcharge app helps you apply conditional fees, late fees, and automatic fees

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Key Features

  • Apply klarna fees, credit card fees, fees payment, or a payment method fee
  • Set a fee rule for a flat fee, cart fee, percentage fee, or extra fee
  • Extra fees manager for mandatory fees, tariff surcharge & extra charge
  • Link price addons, deposits and fees directly to your orders and fees
  • Add a fee, cash on delivery fee, surcharge fee, or fees and surcharges

Checkout vs Addons — Side-by-Side Feature Comparison

Wondering which app offers the features you actually need? This feature-by-feature breakdown shows exactly where Checkout and Upcharge Fees & Product Addons differ — so you can make an informed decision for your Shopify store.

FeatureCheckout PlusUpcharge Fees &
Cart drawer / slide cart
Post-purchase upsell
Frequently bought together
Free shipping bar
Free gift / BOGO
Product page upsell
AI recommendations
Built for Shopify
Free plan available
Custom branding

Integration & Compatibility Comparison

App integrations matter — especially when you're running multiple tools in your Shopify stack. Here's what each app connects with out of the box.

Checkout Plus

Built for Shopify
  • Checkout
  • Customer accounts
  • Shopify Flow
  • Shopify Admin
  • Discount Plus

Supported Languages

English

Upcharge Fees & Product Addons

Built for Shopify
  • Checkout
  • Shopify POS
  • Shopify Admin

Supported Languages

English

Frequently Asked Questions