10 features to include in a custom web app

Planning a custom web app, such as a customer portal, an internal dashboard or a SaaS product? These are the ten features almost every one needs, and how to decide which to build first. You won't need all ten at launch, but planning for them early saves expensive rework later.

1. User accounts and secure login

Users create an account, sign in securely and manage their profile. Add single sign-on or two-factor authentication where the data is sensitive.

2. Admin dashboard

An internal area where your team manages users, data, orders or content without touching code.

3. Works on every screen

The app should work on desktop, tablet and phone, so people can use it wherever they are. See how this fits into the custom web app development process.

4. Role-based access

Controls what each type of user can see and change. It matters as soon as an app has customers, staff and admins who each need different areas.

5. Integrations with your other systems

Connections to your CRM, payment provider, email platform, accounting software or other tools, so data moves without copying and pasting. Each integration adds set-up and maintenance, so plan the essential ones first. Our guide explains how API integration works.

6. Smart forms and data capture

Multi-step forms, quote builders, calculators and validated data entry that feeds straight into your workflows. A plain contact form is rarely enough.

7. Search and filters

Lets users find records, documents or products quickly, with search, tags and filters.

8. Content management

Lets your team update text, help content and settings in the app without a developer.

9. Security and data protection

Encrypted data, secure sessions, audit logs and regular backups, with UK GDPR built in from the start. For most web apps, this matters more than anything users can see.

10. Reporting and analytics

Dashboards and reports that show how the app is used and how the business is performing, using tools such as GA4 or custom reporting.

Features worth considering next

• AI features, such as assistants, smart search or document processing, built on your own data.
• Real-time notifications by email, SMS or in the app.
• Offline access as a progressive web app, for teams in the field.
• Automated workflows that trigger actions when data changes.

To see how these come together in a real build, read what custom web application development involves. Not sure which to build first? Explore our bespoke web application development.