How do I know which Odoo apps I need?

Start from your departments and business needs, not module names. Check what you run (sales, online store, accounting, manufacturing), and the selector resolves the matching Odoo apps plus the modules they automatically pull in.

What is the difference between an app and a module in Odoo?

In practice the terms overlap. An Odoo app is a primary module you turn on (Sales, CRM, Inventory), and each app often installs other supporting modules to function. The selector shows the primary app and the included modules separately.

Which Odoo apps are Enterprise-only?

Manufacturing (MRP), Field service, Subscriptions, Documents, Sign, Knowledge, Studio, Marketing automation, and full eCommerce are Odoo Enterprise-only. If any one lands in your stack, you need Enterprise. Otherwise Community is an option.

Does eCommerce require other Odoo apps?

Yes. The eCommerce module relies on the Website builder for the storefront, Sales for orders, Accounting for invoicing, and Inventory for stock. The selector adds these dependencies to your stack automatically.

How much does the Odoo license cost per user?

Odoo bills per named user per month. The Standard plan covers a simple scope, and the Custom plan unlocks Studio, multi-company, and the API. The selector multiplies the applicable rate by your user count for an indicative monthly license.

Can I start small and add Odoo modules later?

Yes, and it is the recommended approach. Odoo is modular: you start with a core (say CRM, Sales, Accounting) and activate more apps as you grow, with no re-migration. The selector helps you set that starting scope.

Does this selector replace a quote?

No. It gives an indicative license and a module scope to frame the thinking. Implementation, hosting, and support depend on your context. For a firm number, request a fixed-price quote from an Octura architect.

Free Tool · Updated June 20, 2026

Which Odoo apps do you need?

Check the departments you run, and this selector resolves the Odoo apps and modules you need, their dependencies, the edition (Community or Enterprise), and an indicative monthly license. Free, no email required.

From needs to modulesCheck the departments you run and the selector resolves the Odoo apps and their dependencies automatically.
Edition resolved for youIf one app in your stack is Enterprise-only, the selector flags it and names the app that forced it.
No email, everRun as many department combinations as you want. Nothing leaves your browser.

Book a Free Audit Community vs Enterprise

Users

Select the needs and departments you run. We resolve the Odoo apps and the modules each one pulls in.

Recommended Odoo apps

Finance

Accounting

Sales & Marketing

How the Selector Works

You think in departments and needs (sales, online store, accounting), not in module names. This selector does the translation: each need you check resolves a primary Odoo app plus the modules it pulls in. eCommerce, for example, pulls the Website builder, Sales, Accounting, and Inventory, because an online store needs a catalog, orders, invoices, and stock to function.

The selector deduplicates the set of Odoo apps, groups them by pillar, then applies an edition rule. Some apps exist only in Odoo Enterprise; if one lands in your stack, the selector recommends Enterprise and names the app that forced it. Otherwise Community stays viable. The indicative license is Odoo's per-user rate multiplied by your user count.

Odoo Apps by Department

Here is how the most common business needs translate into Odoo apps and modules. The primary column is the app you turn on; the dependencies are the Odoo modules installed automatically to make it work.

Need / department	Primary Odoo app	Included modules	Edition
Sales	Sales	Accounting	Community ok
CRM	CRM	Sales	Community ok
eCommerce	eCommerce	Website, Sales, Accounting, Inventory	Enterprise
POS	Point of Sale	Inventory, Accounting	Community ok
Marketing	Marketing Automation	CRM	Enterprise
Website	Website Builder	None	Community ok
Inventory	Inventory	Purchase	Community ok
Manufacturing	Manufacturing (MRP)	Inventory, Purchase	Enterprise
Purchasing	Purchase	Inventory, Accounting	Community ok
Project	Project	Timesheets	Community ok
Field service	Field Service	Project, Inventory, Accounting	Enterprise
Accounting	Accounting	None	Community ok
Subscriptions	Subscriptions	Sales, Accounting	Enterprise
HR & Payroll	HR & Payroll	None	Community ok
Helpdesk	Helpdesk	None	Community ok
Documents & e-sign	Documents	Sign	Enterprise
Knowledge	Knowledge	None	Enterprise
Custom apps	Studio	None	Enterprise

Each app has its own detailed page in our Odoo apps catalog, with features, use cases, and implementation ranges.

Community vs Enterprise

Odoo Community is free and open source, but several of the most advanced apps are not in it: Manufacturing (MRP), Field service, Subscriptions, Documents, Sign, Knowledge, Studio, Marketing automation, and full eCommerce are Enterprise-only. If your stack contains even one of these, you need Enterprise. Otherwise Community stays viable, with a few trade-offs: no official SLA, no Studio for no-code customization, and you carry hosting and upgrades yourself.

To decide in detail, use our Community vs Enterprise picker, then size the full budget with the 3-year total cost of ownership calculator.

Next Steps After Your Selection

Once your Odoo app stack is sketched out, the next step is a 30-minute call with a senior Odoo architect. We validate the module scope, the edition, and the user count, then send you a fixed-price quote.

Book a Free Consultation →

Backed by real migrations

Numbers like yours, validated on real migrations

Three engagements where the projection turned into operational reality on Odoo. Read the full case studies on the migration service page.

ManufacturingV12 → V17
Industrial Manufacturer, Texas
12custom modules ported, zero data lost
DistributionV14 → V18
Wholesale Distributor, Quebec
30%faster page loads after the upgrade
Professional ServicesCE → Enterprise
Consulting Firm, Brussels
0hproduction downtime during cutover

Frequently Asked Questions

01How do I know which Odoo apps I need?
Start from your departments and business needs, not module names. Check what you run (sales, online store, accounting, manufacturing), and the selector resolves the matching Odoo apps plus the modules they automatically pull in.
02What is the difference between an app and a module in Odoo?
In practice the terms overlap. An Odoo app is a primary module you turn on (Sales, CRM, Inventory), and each app often installs other supporting modules to function. The selector shows the primary app and the included modules separately.
03Which Odoo apps are Enterprise-only?
Manufacturing (MRP), Field service, Subscriptions, Documents, Sign, Knowledge, Studio, Marketing automation, and full eCommerce are Odoo Enterprise-only. If any one lands in your stack, you need Enterprise. Otherwise Community is an option.
04Does eCommerce require other Odoo apps?
Yes. The eCommerce module relies on the Website builder for the storefront, Sales for orders, Accounting for invoicing, and Inventory for stock. The selector adds these dependencies to your stack automatically.
05How much does the Odoo license cost per user?
Odoo bills per named user per month. The Standard plan covers a simple scope, and the Custom plan unlocks Studio, multi-company, and the API. The selector multiplies the applicable rate by your user count for an indicative monthly license.
06Can I start small and add Odoo modules later?
Yes, and it is the recommended approach. Odoo is modular: you start with a core (say CRM, Sales, Accounting) and activate more apps as you grow, with no re-migration. The selector helps you set that starting scope.
07Does this selector replace a quote?
No. It gives an indicative license and a module scope to frame the thinking. Implementation, hosting, and support depend on your context. For a firm number, request a fixed-price quote from an Octura architect.