InvoiceFlow Pro: VAT Invoices vs Quittus — Compliant Invoices
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- Both list a free plan. Paid plans start at $8.99/month for InvoiceFlow Pro and $19/month for Quittus.
- InvoiceFlow Pro lists 7 features Quittus’s listing doesn’t mention, including Email automation, Fields, Multi-language.
Head to head
Free
- · 50 invoices per month
- · All VAT rules, templates and languages
- · Credit notes, PDF and CSV export
Pro
- · Everything in the Free plan
- · Unlimited invoices
Free
- · 30 invoices per month, automatic
- · Compliant numbering, VAT breakdown
- · Credit notes created on refunds
Pro
- · Factur-X format included
- · Monthly PDF pack and CSV export
- · Unlimited invoices, fully automatic
Plus
- · B2C e-reporting data export
- · Everything in Pro
- · FEC, journal and QuickBooks exports
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureBuilt for merchants who have to get VAT right. InvoiceFlow issues a compliant PDF invoice the moment an order is paid, and a matching credit note on every refund. Domestic VAT, cross-border B2B reverse charge under Article 196, export zero-rating and multi-rate VAT are applied automatically from the customer's country and VAT number.
Quittus is built for stores invoicing under French or United States rules. Every paid order becomes a compliant invoice, every refund becomes the matching credit note, numbered sequentially as the law requires. You enter your legal details once and stop thinking about it. Invoices carry your logo, handle multiple tax rates, and French invoices embed Factur-X data.
- Automatic PDF invoices and credit notes for every paid order and refund
- UK and EU VAT compliance
- On-brand invoice templates with a live preview editor
- Issue and email invoices in six languages
- Every paid order invoiced automatically, every refund credited
- Sequential numbering with no gaps, so an audit is a formality
- Hand your accountant one file at month end instead of a folder
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  InvoiceFlow Pro |  Quittus |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | InvoiceFlow Pro | Quittus |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 1 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | InvoiceFlow Pro | Quittus |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $8.99/month(ahead) | $19/month |
| Longest free trial | 15 days | 14 days |
| Plans listed | 2 | 3 |
Listing
| Measure | InvoiceFlow Pro | Quittus |
|---|---|---|
| Shopify category rank | #329(ahead) | #513 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 25, 2026 | Aug 4, 2026 |
| Languages | 5 | 2 |
| Developer | Specifek Ltd | WF Studio |
FAQ
InvoiceFlow Pro and Quittus: common questions
- Is InvoiceFlow Pro or Quittus cheaper?
- Both list a free plan. Paid plans start at $8.99/month for InvoiceFlow Pro and $19/month for Quittus. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- InvoiceFlow Pro lists 7 the others don’t mention, such as Email automation, Fields, Multi-language, Sender email. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.