Pendulum Invoices

Branded invoices and a real reminder cadence for B2B work.

by Alchemy Merch LLC · Launched: May 2026

5.0 (2) on Shopify

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Branded invoice PDFs and a multi-step reminder cadence for Shopify shops running on draft orders, B2B, and custom production. Replies route to your inbox.

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About Pendulum Invoices

Pendulum is for Shopify shops where the order is just the start. Custom apparel, embroidery, signage, jewelry, catering, and B2B manufacturers run on quotes and draft orders, then wait days or weeks to get paid. Shopify sends one plain invoice email and stops. Pendulum picks up with branded PDFs that match your store in light and dark themes, a multi-step reminder cadence with your tone and copy, and W-9 and ACH links on every customer touch. Replies route to your inbox.

Last verified: August 22, 2026 · Fresh

App details

Developer: Alchemy Merch LLC
Category: Orders & shipping
Pricing: Paid
Launched: May 2026
Rating: 5.0 (2) on Shopify

Key features

100 invoices per month
Branded invoice PDFs, light + dark
5 theme presets + color picker
3-step payment reminder schedule
Pre-built reminder email templates

Integrations with:

Shopify Admin

3 plans · 14-day free trial

Starter

$15/month

Growth

$29/month

Pro

$49/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 2 Shopify App Store reviews

Use the arrows to read individual reviews

Finally, an app that lets me make invoices that match the vibe of our shop!! The best part is you can create Dark mode invoices! Pretty much a one stop shop for all your invoicing needs. Just getting started and already loving it!

— Crunchy Fingers

I only just started using the app but have found it to be easy to get into, the feature set is robust, and it's simple and easy to use. The developer gave a few different price tier options that are fair and balanced, and I don't feel like I'm either lacking a feature or need to upgrade for one thing. It's a well built app and so far is working great!

— Designs by Daniel Quasar

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