Acumulus Sync vs Fortnox by Uniwin
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for Acumulus Sync, Oct 20, 2026 for Fortnox by Uniwin.
The short answer
- Paid plans start at $15/month for Acumulus Sync and $20/month for Fortnox by Uniwin.
- Fortnox by Uniwin lists 6 features Acumulus Sync’s listing doesn’t mention, including Customers, Inventory and product, Real-time inventory sync.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Starter
Standard
- · Create customers & products in Fortnox
- · Free Guided Setup Call
- · Free Support
- · Inventory Sync with Orders/Invoice
- · Multi-currency
- · Sync Orders/Invoice
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAcumulus Sync koppelt je Shopify-winkel aan je eigen Acumulus-administratie. Na installatie verbind je Acumulus en kies je wanneer betaalde orders als factuur worden aangemaakt. De app toont per order de syncstatus, voorkomt dubbele facturen en laat fouten zien die aandacht nodig hebben. Refunds kunnen als creditfactuur worden verwerkt.
This Shopify-Fortnox Integration will sync products, customers, orders, invoices from Shopify to Fortnox. You can let the app sync data automatically on each incoming order, or you can sync manually if you prefer so.
- Maak automatisch Acumulus-facturen voor betaalde orders
- Verbind veilig je eigen Acumulus-administratie
- Verwerk refunds als Acumulus-creditfactuur
- Sync your orders from Shopify to Fortnox fully automatically or manually
- Automatically create an accounting invoice and post the invoice.
- Support for cost centers
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 |  Acumulus Sync |  Fortnox by Uniwin |
|---|---|---|
| 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 | Acumulus Sync | Fortnox by Uniwin |
|---|---|---|
| App Store rating | Not published | 3.9 ★ |
| App Store reviews | Not published | 11 |
| New reviews, 28 days | Not enough data | 0 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Acumulus Sync | Fortnox by Uniwin |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $15/month(ahead) | $20/month |
| Longest free trial | 7 days | 14 days |
| Plans listed | 1 | 1 |
Listing
| Measure | Acumulus Sync | Fortnox by Uniwin |
|---|---|---|
| Shopify category rank | #244 | #149(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 9, 2026 | Jul 19, 2022 |
| Languages | 2 | 1 |
| Developer | New Craft Fin | Uniwin |
FAQ
Acumulus Sync and Fortnox by Uniwin: common questions
- Is Acumulus Sync or Fortnox by Uniwin cheaper?
- Paid plans start at $15/month for Acumulus Sync and $20/month for Fortnox by Uniwin. 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?
- Fortnox by Uniwin lists 6 the others don’t mention, such as Customers, Inventory and product, Real-time inventory sync, Sales and refunds. 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 14, 2026 for Acumulus Sync, Oct 20, 2026 for Fortnox by Uniwin; 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 14, 2026 for Acumulus Sync, Oct 20, 2026 for Fortnox by Uniwin. 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.