The Shopify invoice app for businesses that get paid after the sale.
Pendulum pairs branded invoice PDFs with an automated, multi-touch payment-reminder cadence. It is built for Shopify merchants who run on quotes, draft orders, B2B terms, and custom production, where the order is the start of the job, not the end.
Free 14-day trial. No credit card. Billed through your Shopify admin.
Which Shopify invoicing problem are you solving?
Best Shopify invoice app for draft orders and quotes
If you build orders as drafts, send a quote, collect a deposit, and bill the balance on ship, Pendulum was built for that flow. Every draft order becomes a branded invoice, and overdue balances trigger an automated reminder cadence so you stop chasing by hand.
Best Shopify invoice app for B2B and wholesale net-30
Wholesale and B2B orders run on terms, not instant checkout. Pendulum sends a branded invoice on the order and escalates reminders as the due date passes, with replies routed to your real inbox so a buyer can answer a person, not a no-reply.
Best Shopify invoice app for custom and made-to-order production
Custom apparel, signage, jewelry, and made-to-order shops bill across milestones: deposit, proof, balance. Pendulum carries your brand onto every invoice and keeps the follow-ups running while you stay focused on production.
Pendulum vs the alternatives
Most options do one half of the job. Pendulum does both: the branded invoice and the follow-up.
| Capability | Pendulum | Shopify built-in | Reminder-only apps | PDF-only apps |
|---|---|---|---|---|
| Branded invoice PDF that matches your store | Yes | No | No | Yes |
| Automated multi-touch reminder cadence | Yes | No | Yes | No |
| Built for draft orders and quotes | Yes | Limited | Limited | Limited |
| Replies route to your real inbox | Yes | No | Limited | No |
| Send from your own domain | Yes | No | Limited | No |
| Print a branded invoice from the order page | Yes | Limited | No | Limited |
Comparison reflects typical capabilities of each category. Individual apps vary.
Shopify invoicing questions, answered
What is the best invoice app for Shopify?+
The best Shopify invoice app depends on how you get paid. For merchants who run on quotes, draft orders, B2B terms, or custom production, Pendulum combines branded invoice PDFs with an automated multi-touch payment-reminder cadence in one app. Stores that take instant checkout payment and never chase a balance may not need a dedicated invoicing app at all.
Does Shopify have built-in invoicing?+
Shopify can email a basic invoice for a draft order through its Send invoice dialog, but the email uses Shopify's default template, there is no branded PDF, and there is no automated reminder schedule. Pendulum replaces that with branded invoices and a reminder cadence that chases overdue balances for you.
Can a Shopify app send automatic payment reminders?+
Yes. Pendulum sends a multi-touch reminder sequence on a schedule you set, for example Day +3, +7, and +14 after the due date, escalating in tone from friendly to firm to urgent. Reminders are branded, signed, and reply to your real inbox.
Does Pendulum process payments or replace Shopify Payments?+
No. Pendulum does not process payments. Reminder emails deep-link to your existing Shopify checkout or invoice URL, and customers pay with whatever method is already on your store. Pendulum handles the invoice design and the follow-up, not the transaction.
How much does Pendulum cost?+
Pendulum starts at 15 USD per month for up to 100 invoices, 29 USD per month for up to 500 invoices, and 49 USD per month for unlimited invoices with verified-sender and webhooks. Every plan includes a 14-day free trial with no credit card, billed through your Shopify admin.
Stop chasing. Start getting paid.
Branded invoices and a real reminder cadence, running in the background.
Install on ShopifyLearn more on the Pendulum home page or browse the help center.