FairInvoice vs Invoice Calculator
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for FairInvoice, Jun 4, 2026 for Invoice Calculator.
The short answer
- FairInvoice lists 3 features Invoice Calculator’s listing doesn’t mention, including Bulk download, Credit notes, Email automation.
Head to head
One Plan
- · Automatic invoice emails
- · Bulk ZIP export
- · Credit notes included
- · Unlimited orders
- · VAT-correct PDF invoices
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureFairInvoice does one job properly: it creates accurate invoices for every order and delivers them automatically. Taxes are calculated line by line and rounding is unit-tested, so the totals on your invoices match your orders to the cent. Invoice and credit note numbers are sequential and gapless, the way accountants expect. Once issued, a document never changes.
Suppliers fulfilling orders for your store typically need to invoice you for the unit value of goods after each billing period. This app lets your supplier connect with read-only order access, pull a date range, match each line item to their quotation sheet, and write a fully formatted invoice to a Google Sheet you control.
- VAT-correct, cent-accurate PDF invoices with line-level tax and tested rounding
- Invoice emailed automatically after payment, with the real PDF attached
- Gapless, sequential invoice and credit note numbering — audit-friendly
- Bulk export any date range as a single ZIP
- Your supplier pulls order data for any date range, including pre-60-day orders
- Read-only access — your supplier can never edit, refund, or modify orders
- Output goes to a Google Sheet your supplier configures and you can review
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 |  FairInvoice |  Invoice Calculator |
|---|---|---|
| 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 | FairInvoice | Invoice Calculator |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | 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 | FairInvoice | Invoice Calculator |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $12.99/month | No monthly plan listed |
| Longest free trial | 14 days | Not listed |
| Plans listed | 1 | Not published |
Listing
| Measure | FairInvoice | Invoice Calculator |
|---|---|---|
| Shopify category rank | #502 | #132(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 28, 2026 | Jun 4, 2026 |
| Languages | 1 | 1 |
| Developer | VITRIN | Invoice Calculator |
FAQ
FairInvoice and Invoice Calculator: common questions
- What features does each app list that the other doesn’t?
- FairInvoice lists 3 the others don’t mention, such as Bulk download, Credit notes, Email automation. 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 for FairInvoice, Jun 4, 2026 for Invoice Calculator; 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 for FairInvoice, Jun 4, 2026 for Invoice Calculator. 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.