Pendulum Invoices

Name: Pendulum Invoices
Brand: Alchemy Merch LLC
Rating: 5.0 (2 reviews)

Pricing: From $15/month. Free trial available.
Rating: 5.0 (2)
Developer: Alchemy Merch LLC

Branded invoice PDFs and multi-step payment reminders. For draft orders, B2B, and custom work.

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.

Branded invoice PDFs with light and dark themes, color picker, and watermark
Multi-step payment reminder cadence with Friendly, Firm, and Urgent tones
Branded replacements for Shopify's order confirmation and draft invoice emails
W-9 and ACH instruction links on reminders, invoices, and customer emails
Replies route to your inbox, not a no-reply address

Languages

English

Works with

Shopify Admin

Pricing

Starter

$15 / month

or $150/year and save 17%

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
Branded customer email templates
W-9 and ACH document buttons
Email support

14-day free trial

Growth

$29 / month

or $290/year and save 17%

Features

Everything in Starter
500 invoices per month
3 brand templates
Editable 3-step reminder schedule
Editable templates, 3 tone presets
Remove Pendulum branding from emails
Delivery, bounce, complaint tracking
Suppression list management

14-day free trial

Pro

$49 / month

or $490/year and save 17%

Features

Everything in Growth
Unlimited invoices
Unlimited brand templates
Custom reminder schedule (5+ steps)
Per-customer email overrides
Verified sender domain
Outbound webhooks, signed JSON
Priority email support

14-day free trial

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days. See all pricing options

Reviews (2)

Overall rating

Counts per rating level

100% of ratings are 5 stars
2
0% of ratings are 4 stars
0% of ratings are 3 stars
0% of ratings are 2 stars
0% of ratings are 1 stars

All reviews

June 2, 2026

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

United States

28 minutes using the app

Alchemy Merch LLC replied June 3, 2026

Thanks for the review, Daniel! Happy to hear any suggestions you may have for features that would be helpful.

June 2, 2026

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

United States

21 minutes using the app

Alchemy Merch LLC replied June 3, 2026

Thanks so much for the review, Crunchy. Happy to help and open to anything you'd like to see in the app that would help your business.