Canvas App or Model-driven? How to decide without mistakes

The most common answer you hear in forums is "it depends". And it really does depend, but on objective variables that can be answered before opening Power Apps. When the choice is still open after the assessment, the problem usually isn't "which tool", but "which scope".

The differences that matter in practice

Canvas Apps

Canvas is a free-form canvas framework. You build each screen with controls and containers, connect the app to whatever sources you want (SharePoint, SQL Server, Dataverse, APIs through a custom connector; the last three require a premium license) and control every component. The interface can be as polished as a native app or as poor as a badly made PowerPoint. The freedom is both the appeal and the trap.

Model-driven Apps

Model-driven is the interface generated from the data model (Dataverse). You define tables, relationships, forms and views, and Power Apps builds the screens. Less visual control, far more productivity when the app is essentially for creating, looking up and updating related records.

Decision matrix by criterion

1. Data source

• Dataverse-dominant (80% of the data or more): Model-driven almost always.
• Several sources (SharePoint, SQL Server, external APIs): Canvas.
• Data in an Excel or CSV spreadsheet: Canvas, but reconsider the data model before starting.

2. Expected interface profile

• Daily-use back-office interface: Model-driven. The interface follows the standard pattern of Microsoft apps (lists, forms, dashboards), which cuts training time; if the company already uses Dynamics 365, it looks the same.
• Specific flow with a custom interface (for example, field inspection or a checklist on the phone): Canvas.
• Interface for external users: Power Pages, when the audience is broad or anonymous; a Canvas App shared with Microsoft Entra guests, when there are a few identified, licensed partners. Model-driven was not designed for that.

3. Phone or computer

• Mainly used in the field, on the phone: Canvas, with screens designed for the phone first.
• Mainly used on a computer: Model-driven has a productivity advantage.
• Both: responsive Canvas, which takes more implementation time, or Model-driven with custom pages (Canvas screens inside the app) where the interface needs to be specific.

4. Data volume

• A few thousand records: both run well.
• Tens of thousands of records or more: Canvas needs delegable queries and an indexed source; Model-driven already pages and filters on the server.
• Many related tables: Model-driven with Dataverse.

5. Governance and auditing

• Strong audit trail requirement (regulated industry, LGPD-critical): data in Dataverse, with auditing turned on per table. This applies to Model-driven and to Canvas on Dataverse.
• Fine-grained per-record permission control: Dataverse with security roles and business units, whatever the app type.
• Few regulatory demands: Canvas handles it well, as long as the app writes the history of each change to its own list or table.

6. Licensing cost

Model-driven requires Dataverse, and every app on Dataverse (Canvas or Model-driven) needs a Power Apps premium license: per user, per app or pay-as-you-go. A Canvas app that uses only standard connectors, such as SharePoint and Excel, runs on Microsoft 365 licenses. In cost-sensitive companies with 100 users or more, the accumulated savings of staying on Canvas with SharePoint can be significant, provided the data model supports it.

Classic scenarios

CRM for an internal sales team

Model-driven. Relational data, a standardized interface and Dataverse auditing.

Quality inspection on the factory floor

Canvas. Screens designed for the phone, photos and on-screen signature; full offline if the data is in Dataverse. Model-driven also runs offline, but does not handle such a specific interface well.

Expense approval across several levels

Canvas with Power Automate for the approval flow. Model-driven only if the company already has a standardized Dataverse.

Supplier registration validated by 3 departments

Model-driven. A central table, clear relationships, business rules for validation and security roles to define who approves in each department.

Shift scheduling app for operators

Canvas designed for the phone. Model-driven would be more structure than a one-off use needs.

What not to consider in the decision

• "Which one is more modern": both are supported and evolving. Modernity is not a technical criterion.
• "Canvas is easier": only if you design well. A bad interface in Canvas is easy to produce.
• "Model-driven is more professional": many a Model-driven app stalled at the prototype stage from excessive rigor in the model.

Canvas when the interface is the differentiator. Model-driven when the data model is the differentiator. The doubt usually comes from not having decided which of the two is the differentiator in your case.