Invoice 123 vs SmartBill • Integration
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Aug 5, 2026 for Invoice 123, Nov 11, 2026 for SmartBill • Integration.
The short answer
- On the Shopify App Store: Invoice 123 3.2 from 2 reviews and SmartBill • Integration 4.6 from 12 reviews.
- SmartBill • Integration lists 18 features Invoice 123’s listing doesn’t mention, including Billing and invoicing, Credit notes, Customs documents.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Professional
- · 24/7 human-backed support
- · Compliant Tax Invoicing
- · Ideal for — Getting started
- · Multi Language & Currency Support
- · UNLIMITED Generate & Send Documents
Premium
- · Customer Feature Requests
- · Everything in Professional
- · Ideal for — More complex shops
- · Personalized Setup
- · Priority Support (Fastest response)
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureStreamline financial tasks with Invoice123, your automated invoicing ally, now smoothly integrated with Shopify. Forget manual data entry and cut down errors to ensure every sale is billed promptly and accurately. This integration enables quick, effortless data transfer from Shopify to Invoice123, offering you precise invoicing and letting you direct valuable resources to vital business aspects.
Retyping Shopify orders into SmartBill takes time and invites errors. This app turns every order into a document in SmartBill automatically: a factura or proforma on your own series, with a storno for every refund. RO e-Factura-ready: you send them to ANAF SPV from SmartBill. Online and POS orders, B2B with the cod de TVA, reverse charge and OSS, stock deducted by SKU.
- Create and send professional invoices instantly.
- Automate sales proposals and payment reminders.
- Integrate Shopify seamlessly for e-commerce invoicing.
- Automate warehouse waybills and effortless stock management.
- Automatically create and send e-invoices, credit notes, and more
- Legislation-compliant documents translated into all major languages
- B2B invoicing & Customer's VAT ID directly on the invoice & OSS handling
- POS orders are supported
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 123 |  SmartBill • Integration |
|---|---|---|
| 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 123 | SmartBill • Integration |
|---|---|---|
| App Store rating | 3.2 ★ | 4.6 ★(ahead) |
| App Store reviews | 2 | 12(ahead) |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Invoice 123 | SmartBill • Integration |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $17.99/month |
| Longest free trial | Not listed | 7 days |
| Plans listed | Not published | 2 |
Listing
| Measure | Invoice 123 | SmartBill • Integration |
|---|---|---|
| Shopify category rank | #12 | #45 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Apr 8, 2024 | Jan 30, 2026 |
| Languages | 1 | 2 |
| Developer | Invoice 123, UAB | Make It Easy! |
FAQ
Invoice 123 and SmartBill • Integration: common questions
- Which has better reviews, Invoice 123 or SmartBill • Integration?
- On the Shopify App Store: Invoice 123 3.2 from 2 reviews and SmartBill • Integration 4.6 from 12 reviews.
- What features does each app list that the other doesn’t?
- SmartBill • Integration lists 18 the others don’t mention, such as Billing and invoicing, Credit notes, Customs documents, 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 Aug 5, 2026 for Invoice 123, Nov 11, 2026 for SmartBill • Integration; 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 Aug 5, 2026 for Invoice 123, Nov 11, 2026 for SmartBill • Integration. 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.