---
title: "Customize the App SDK UI"
slug: "digipassone-customize-app-sdk-ui"
updated: 2026-10-27T20:13:33Z
published: 2026-10-27T20:13:33Z
canonical: "docs.onespan.com/digipassone-customize-app-sdk-ui"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Customize the App SDK UI

Throughout this documentation portal, the screenshots show our App SDK’s customized UI. You should apply your own customization by modifying the nnl_ui_cfg.json file provided with the Android, iOS or Web Tutorial app. You can modify nnl_ui_cfg.json in the following ways:

1. [Use our online GUI tool](/dpoa/docs/s3suite94-customize-the-ui-in-the-app-sdk-using-a-gui-1).
2. [Edit the file directly](/dpoa/docs/s3suite94-using-customize-the-ui-in-the-app-sdk-using-json-1).