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Product guides, articles, and calculators to help you run your business with Chargezen.
Chargezen Product Documentation
Find setup guides, feature walkthroughs, and API references for CheckoutOS and Spark!.
Browse DocumentationProduct Guides
Step-by-step documentation for CheckoutOS and Spark!.
CheckoutOS Quick Start Guide
Get started with CheckoutOS and configure your first checkout experience.
Spark! Quick Start Guide
Set up Spark! and get started with your affiliate program.
Creating Your First Upsell
Follow the CheckoutOS guide to configure an upsell offer.
Affiliate Program Setup
Configure an affiliate program in Spark!.
Product Overviews
Explore the products that work together in Chargezen.
Subscriptions
Explore recurring billing, subscriber management, and retention tools.
SmartyTap
Explore customer conversations and marketing workflows.
Concierge
Explore customer service and assistance across the customer journey.
Workforce
Explore assistants that help your team carry out business tasks.
Articles
Read about subscription models, customer retention, and business metrics.
Build-a-Box Subscription Businesses
Explore custom subscription boxes and how customers choose their products.
Measuring Membership Program Performance
Learn about recurring revenue, member growth, and other membership metrics.
Failed Payments and Customer Retention
Learn how payment reminders and recovery processes relate to customer retention.
Calculators & Tools
Explore business metrics using your own inputs and assumptions.
Churn Rate Calculator
Calculate customer churn and explore its effect over time.
Customer Lifetime Value Calculator
Estimate customer value using the numbers from your business.
SMS ROI Calculator
Explore campaign costs and estimated returns using your assumptions.
Commission Calculator
Compare affiliate commissions across revenue and rate scenarios.
Keep Learning
Read more about subscription businesses, customer retention, and marketing on the Chargezen blog.
Browse Articles