Develop apps
This section is your go-to place when you are developing. It gives you an overview of all tools you have at your disposal as a VIKTOR developer, including the different ways of creating apps, an overview of all VIKTOR components and tutorials on how to use them.
Choosing your development approach
VIKTOR offers two ways to build apps: the App Builder and local development. Both produce the same kind of VIKTOR app — the difference is in how you write and manage the code.
- App Builder — a browser-based environment where an AI assistant helps you build apps without any local setup. Great for getting started quickly.
- Local development — write your app code in your preferred IDE (such as VS Code or PyCharm) on your own machine, using
viktor-clito connect to VIKTOR. Better suited for larger or more complex apps.
See Two ways to build a VIKTOR app for a side-by-side comparison.
Getting started with the App builder
You can create a new app using the App Builder directly from the Home page in the VIKTOR environment.
- Under Start building you will find the button Create new app.
- If you click on this you land in the App Builder.
You can also try out one of the example prompts on the right.


Go to App Builder for more detailed information on how to use the App builder, its features and limitations.
Getting started with Local development
To start developing apps locally you need to install Python and VIKTOR on your own computer. That is assuming you already have an IDE installed.
- Go to your personal settings > local development.
- Here you click on Install VIKTOR.
- The pop-up will guide you through the installation process.


Once you have installed you can continue to the next step, the starter guide.
- Starter guideLearn more
Learn the basics of developing an app in VIKTOR
Go to local development to learn all about the different tools you will be working with.
Fundamentals
Whether you start with the App Builder or develop your app locally. It’s good to know some basics.
Basic app structure
- App file structure
- Inputs (parametrization)
- Results & visualizations
App types
- Editor type
- Simple type
- Tree type
VIKTOR components
Learn about the different types of fields and visualizations VIKTOR has to offer.
Inputs
Add fields, sliders, uploads, etc so users can give your app the information it needs.
Results
Show plots, charts, 3D models, tables and maps to visualize the results.
Layouts
Arrange how inputs, results, and other elements appear to make your app easy and intuitive to use.
Integrations
Eliminate manual data transfers between different software packages and disciplines.
- IntegrationsLearn more
Learn more about the integration options VIKTOR offers.
Collaboration
Share your apps and collaborate with your team.
- Sharing your appLearn more
Learn how to collaborate with other users on your app.