Invoice Inn: PDF 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 Nov 7, 2026 for Invoice Inn, Oct 13, 2026 for Quittus.
The short answer
- Both list a free plan. Paid plans start at $4.99/month for Invoice Inn and $19/month for Quittus.
- Invoice Inn lists 7 features Quittus’s listing doesn’t mention, including Data security, Email automation, Fields.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 50 documents per month
- · All templates, AI-matched to your store
- · Automatic invoice creation and emailing
- · B2B invoices with VAT numbers
- · Bulk PDF download
- · Credit notes for refunds
Starter
- · 500 documents per month.
- · AI design regeneration on demand
- · Download translated PDF, 24 languages
- · Google Drive and Dropbox sync
- · Remove Invoice Inn branding
- · SKU and barcode columns
Pro
- · 5,000 documents per month.
- · OSS export
- · Priority support
- · Scheduled exports
- · ZUGFeRD for sellers based in Germany
Premium
- · Dedicated support
- · Personalized template setup
- · Unlimited documents.
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 featureInvoice Inn starts from your store. It reads your colours and fonts and designs an invoice that looks like your brand. Keep it, switch to another template, or change any field, column and label yourself with a live preview. No code. Setup is your company and VAT details and a few clicks.
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.
- Invoices created and emailed automatically when orders are paid or fulfilled
- Refunds become credit notes, originals stay exactly as issued
- Your logo, colors, columns and numbering in settings, with live preview, no code
- B2B handled too: company details, VAT number and VAT breakdown on the invoice
- 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 |  Invoice Inn |  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 | Invoice Inn | Quittus |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 6 | 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 | Invoice Inn | Quittus |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $4.99/month(ahead) | $19/month |
| Longest free trial | 14 days | 14 days |
| Plans listed | 4 | 3 |
Listing
| Measure | Invoice Inn | Quittus |
|---|---|---|
| Shopify category rank | #57(ahead) | #513 |
| Shopify App Charts | #5 on Pricing moves in Invoices and receipts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 21, 2026 | Aug 4, 2026 |
| Languages | 1 | 2 |
| Developer | MKIT Projects | WF Studio |
FAQ
Invoice Inn and Quittus: common questions
- Is Invoice Inn or Quittus cheaper?
- Both list a free plan. Paid plans start at $4.99/month for Invoice Inn 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?
- Invoice Inn lists 7 the others don’t mention, such as Data security, Email automation, Fields, File naming. Quittus lists 2 the others don’t mention, such as Multi-currency, Reports. 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 Nov 7, 2026 for Invoice Inn, Oct 13, 2026 for Quittus; 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 Nov 7, 2026 for Invoice Inn, Oct 13, 2026 for Quittus. 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.