Instrumental Components

A complete Rails Stripe integration to power your SaaS business.

Instrumental Commerce gives your Rails apps a complete Stripe-powered commerce system, up and running in minutes.

For builders who love this stack:

Billing is the backbone of every SaaS. But building it right is a brutal time sink.

Instrumental Commerce is my fully-integrated, Stripe-powered billing system with everything a SaaS business needs: Pricing tables, checkout, dunning, coupon logic, subscription management, and more—all wired up and ready to go in minutes.

No shortcuts. No duct tape. Just a complete, battle-tested commerce engine, built for Rails and built to last.

Let’s take the pain out of payments—so you can focus on building the product your customers actually buy.

Brian Casel Signature
Brian Casel
Brian Casel
Creator of Instrumental Components

Why build with Instrumental Commerce?

Complete

Everything you need for SaaS billing—checkout, subscriptions, trials, coupons, dunning, invoicing, and a Stripe-powered billing portal—ready to drop into your app.

Integrated

No third-party glue code or Frankenstack setup. Just clean, idiomatic Rails code that works seamlessly with Turbo, Stimulus, and the rest of your app.

Ownable

Instrumental Commerce installs directly into your project with conventional Rails, Stimulus, and Tailwind code (that you and your LLMs can understand). Your codebase, your flow, your design—no vendor lock-in or hosted black boxes.

Battle-tested

This isn’t a toy demo. It’s the real billing system behind live, revenue-generating apps, hardened by production use and refined for reliability.

Stripe-native

Deep integration with Stripe’s best APIs so you get modern capabilities without wrestling their docs for days, while getting the benefit of the industry-leading payment processor.

Optimized

From checkout flow to dunning emails, every part is designed to reduce friction, recover failed payments, and keep your customers around—maximizing conversion and retention without extra effort.

Instrumental Commerce

Stripe integration

Deep Stripe API integration with the latest integrated forms and features.
Stripe API integration
Stripe webhooks
Trials or no trials
Subscriptions or one-time payments
Payment forms
Payment methods
Stripe coupons
And more...

Pricing tables

Optimized SaaS pricing page to showcase SaaS tiers with monthly/annual toggle, benefits, dynamic buttons, and more.
Pricing table design
Monthly/annual toggle
Drag-and-drop reordering
Dynamic buttons
Features with tooltips
FAQ section
Light & dark mode
Mobile responsive

Checkout

Optimized checkout flow that keeps customers on your site, and not on Stripe's.
Stay on your site
Register or login flow
Checkout progress bar
Purchase summary
Stripe payment form
Coupon integration
Button with loading state

Subscription management

Customers can manage their subscriptions, update payment methods, see payments history, and more.
Billing overview
Payments history
Payment methods
Manage subscription

Dunning

Prevent leaking revenue by notifying customers when their subscription payment fails and giving them a friction-less way to resolve their payment.
Failed payment notifications
Friction-free retry payment
Friction-free payment method change
Subscription status updates

Coupons

Integrated Stripe coupons with dynamic discount information and optimized checkout flow when promoting special pricing.
Stripe coupons
Hide coupon field
URL-based coupons
Discount price display
Custom text when coupon is applied

Upgrades & downgrades

Customers can easily upgrade, downgrade or cancel and provide a reason for cancellation.
One-click upgrade or downgrade plan
Stripe scheduled plan changes
Cancellation form
Collect cancellation reasons

Admin Management

Your admin panel lets you manage and test new pricing without deploying code changes, and manage customer orders as well.
Manage products, prices, and plans
Drag-and-drop reordering
Test new pricing & plans without deploying code
See customer orders, payments, and subscriptions
And more...

Frequently asked questions

What is Instrumental Commerce, exactly?
And what is Instrumental Components?
Is Stripe required in order to use Instrumental Commerce?
What are the requirements for using Instrumental Components?
Will my customers be sent to Stripe's website to checkout?
Does Instrumental charge transaction fees?
How many projects does my license entitle me to use it on?
Can I share Instrumental Components with my team?
Can I see a demo of Instrumental Commerce?
Can I see demos of Instrumental Components?
Is there a free version available?
What is the refund policy?
I have other questions...
Who created Instrumental Components?

Get Instrumental Commerce

Get Stripe integration out of the box with the Instrumental Commerce component (included with Instrumental Components)

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CasJam Media LLC