# One Shop Manager or Merlin Backoffice

Both are desktop apps that manage the PrestaShop catalog in bulk. The difference lies in the model and the operating system: Merlin Backoffice Flex, by Sitolog, is a monthly subscription for Windows; One Shop Manager is a license paid once, for Mac and Windows.

## In figures

Public prices recorded on October 2, 2026 on [Sitolog's Merlin Backoffice Flex page](https://www.sitolog.com/fr/merlin-backoffice-flex-addon-de-gestion-prestashop/153-merlin-backoffice-module-pour-prestashop.html), excluding promotions.

| | One Shop Manager | Merlin Backoffice Flex |
|---|---|---|
| Model | Perpetual license | Monthly subscription, no commitment |
| Price excl. VAT | €149 (launch), then €299, once | €20/month (Essentiels), €30 (Pro), €40 (Premium), €60 (Business) |
| 3-year cost | €299, or €437 with updates | €360 to €1,080 depending on the plan and the yearly discount |
| Shops | 3 | 1 (Essentiels), 2 (Pro), 3 (Premium), 5 (Business) |
| Computers | 3 | 2, unlimited on Business on a VPS |
| Operating systems | macOS 11+ and Windows 10+ | Windows 10 and 11; on a Mac, through a virtual machine |
| PrestaShop versions | 1.6, 1.7, 8 and 9 | 1.5, 1.6, 1.7, 8 and 9 |
| Trial | 14 days | 15 days |

## When to choose One Shop Manager

- You want to pay once rather than every month.
- You work on a Mac, without a virtual machine.
- You manage up to 3 shops without moving to a higher plan.
- You pick orders or sell in store: [picking](/en/features/prestashop-orders-picking.md) and the [till](/en/features/prestashop-pos-till.md) are included.

## When Merlin Backoffice may be a fit

- Your shop is still on PrestaShop 1.5, which One Shop Manager does not support.
- You prefer a monthly subscription with no commitment to a purchase.
- You manage 4 or 5 shops on a single plan.

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Source: https://oneshopmanager.com/en/compare/merlin-backoffice · updated 2026-10-02