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Software architecture · Mobile development

Mobile app package diagram

A mobile app package diagram shows the major modules in an application and how requests cross their boundaries. Presentation contains screens, domain contains use cases, data contains repositories, and network or platform packages hold external concerns. The arrows show direction: a screen invokes a use case, while the repository hides whether data comes from a cache or API. This is a concise way to discuss architecture in a design review before modeling the details of individual types.

Type UML Class DiagramStandard OMG UML 2.5.1 §9–§11Engine schematex-umlclassUpdated 9/24/2026
Mobile app package structure
Drawing preview
The request

“Create a mobile app package diagram with presentation, domain, data, network, and platform packages and their dependencies.”

Then tryAdd an analytics package.Change LocalCache to encrypted storage.
What is in this drawing

Read the decisions behind it.

01Separate UI

Screens depend on use cases rather than network clients.

02Keep domain central

Use cases coordinate application behavior.

03Isolate data access

Repositories hide cache and API details.

04Mark platform dependencies

Show push services at the outer boundary.

Use when explaining a modular mobile architecture to developers and reviewers.

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Other examples in this family.

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FAQ

Common questions

Why separate domain from data?

It lets application behavior depend on an abstraction rather than a particular API or storage mechanism.

Can packages contain many classes?

Yes, but a package diagram usually shows only representative classes or names.

Should UI call the API directly?

Keeping that dependency behind a use case and repository makes the boundary easier to manage.