Custom PowerApps Development for Microsoft 365

Replace spreadsheets, paper forms and legacy tools with custom business applications built on Power Platform. Canvas apps, model-driven apps, code-first apps and custom PCF controls - we build whatever your process needs.

Is This You?

If any of these sound familiar, a custom PowerApp can fix them.

Critical business processes run on Excel spreadsheets that are shared via email - version control is non-existent

You have paper forms or PDF workflows that require manual data entry into another system

A legacy Access database or VBA tool runs a key process - and the person who built it left years ago

You need a mobile app for field workers, site inspections or data capture - but don't have the budget for native development

You've looked at off-the-shelf software but nothing fits your exact process without expensive customisation

Your team has tried building a PowerApp but it looks amateurish and doesn't scale beyond a basic prototype

Four Ways to Build on Power Platform

Power Apps isn't one thing. There are four distinct app types, each suited to different use cases. We help you pick the right approach - not the one that's easiest to sell.

Canvas Apps

Pixel-Perfect Custom UI

Full control over layout, design and user experience. Canvas apps let us build exactly what your users need - branded interfaces with custom navigation, forms, galleries and dashboards. Best for mobile-first apps, task-specific tools and user-facing data capture.

Best for:

Mobile data capture - inspections, audits, field reports, timesheets
Task-specific tools - expense submission, leave requests, equipment booking
SharePoint-connected apps - front-ends for SharePoint lists and libraries
Branded experiences that need to match your company identity

Data sources: SharePoint, Excel, Dataverse, SQL Server, REST APIs, 1,000+ connectors

Model-Driven Apps

Data-First Business Applications

Built on Dataverse with auto-generated UI based on your data model. Model-driven apps are ideal for complex, multi-entity business applications - CRM-style tools, case management, asset tracking and anything with relationships between records.

Best for:

Case management - customer support, complaints, service requests
Asset and inventory management with related records and audit trails
Multi-entity applications - customers, orders, products, invoices all linked
Applications that need dashboards, views, charts and reporting built in

Data source: Dataverse (required). Role-based security, audit logging and business rules included.

Code-First Apps

Product-Grade Experiences

When canvas apps hit their limits, code-first development takes over. We build Power Apps with custom code components (React/TypeScript) that look and feel like commercial software - not a low-code prototype. Modern, responsive UIs with complex logic that canvas formulas can't handle cleanly.

Best for:

Customer-facing or partner-facing apps that need a polished, professional feel
Complex multi-step workflows with wizard-style interfaces and progress tracking
Apps that need to replace commercial SaaS tools with a tailored alternative
Scenarios where canvas app performance degrades under complex formula logic

Built with: React, TypeScript, PCF framework. Runs inside PowerApps with Dataverse backend.

AI-Assisted / Vibe Coding

Rapid Prototyping & AI-Accelerated Builds

AI-assisted development using Copilot and natural language prompts to accelerate app creation. We use vibe coding to rapidly prototype ideas, generate initial app structures, and iterate faster - then refine with proper development practices. The speed of AI with the quality control of an experienced developer.

Best for:

Rapid prototyping - validate an idea in days, not weeks
Internal tools where speed of delivery matters more than pixel-perfect design
Generating initial Dataverse table structures and app screens from requirements
Accelerating development on straightforward CRUD applications

Note: AI accelerates the build. An experienced developer ensures the result is production-ready, secure and maintainable.

Custom PCF Controls

PowerApps Component Framework (PCF) controls are custom-built UI components that extend Power Apps beyond its standard capabilities. Built with React and TypeScript, they run natively inside canvas and model-driven apps.

When the standard controls don't do what you need - or when you need a user experience that feels like a commercial product rather than a low-code tool - PCF controls fill the gap.

What We've Built

Receipt scanner with camera integration and AI-powered data extraction
Address-to-address mileage calculator with HMRC rate application
Multi-step wizard interfaces with progress tracking and inline validation
Interactive Gantt chart controls for project timeline visualisation
Signature capture components for mobile approval workflows

Why PCF Over Standard Controls

Full design control - build exactly the UI your users need, not what Power Apps offers by default
Better performance - complex logic runs client-side in TypeScript instead of Power Apps formulas
Reusable across apps - build once, deploy to any canvas or model-driven app
Access to browser APIs - camera, geolocation, local storage, clipboard
Third-party library integration - charts, maps, rich text editors, date pickers

Data Sources & Integration

Every Power App needs data behind it. We work with all the major data platforms and can integrate with external systems via APIs and custom connectors.

Recommended

Dataverse

Microsoft's enterprise data platform. Structured tables with relationships, role-based security, business rules, audit logging and calculated fields. The right choice for complex, multi-entity applications. Required for model-driven apps. Comes with Power Apps Premium licensing.

No Extra Licence

SharePoint Lists

The most cost-effective backend for Power Apps - included in your Microsoft 365 licence with no premium add-on required. Ideal for simpler applications, form-based data capture, and scenarios where data already lives in SharePoint. We design list schemas with proper column types, views and indexing.

Premium

SQL, APIs & External Systems

Power Apps connects to SQL Server, REST APIs, Salesforce, SAP and hundreds of other systems via premium connectors. For systems without a connector, we build custom connectors or use Azure Functions as middleware. Your app can read and write to multiple data sources in a single workflow.

Choosing between Dataverse and SharePoint

This is the most common question we get. The short answer: use SharePoint lists if your app is straightforward and you want to avoid premium licensing. Use Dataverse if you need relational data, role-based security, business rules, or more than 12-15 columns with complex data types. We'll recommend the right approach during discovery based on your specific requirements, budget and growth plans.

Common Use Cases

These are the types of applications we build most often. If your process involves data capture, approvals or tracking - it's a candidate.

Expense Management

Receipt capture, mileage calculation, automated approval routing, real-time status tracking. Replaces Excel templates and email-based processes.

Customer Onboarding

Multi-step guided forms, document upload, automated credit checks via API, compliance checklists and approval workflows.

Site Inspections & Audits

Mobile-first data capture with photo evidence, GPS tagging, offline support and automatic report generation.

Asset & Inventory Tracking

Barcode/QR scanning, check-in/check-out, maintenance scheduling, location tracking and depreciation logging.

Request Management

IT helpdesk, facilities requests, procurement, holiday booking - any process where someone submits a request and it needs routing, tracking and resolution.

Project & Task Tracking

Project dashboards, task assignment, time logging, milestone tracking and status reporting. Replaces spreadsheet-based project management.

Compliance & Certification

Training records, certification expiry tracking, policy acknowledgement, regulatory checklists and audit trail reporting.

Visitor Management

Reception check-in app with host notification, NDA/policy acceptance, badge printing and visitor log for compliance reporting.

Quote & Proposal Builder

Product/service selection, pricing calculations, PDF quote generation and CRM integration. Replaces manual quote processes and ensures pricing consistency.

How We Build Production-Ready Apps

The difference between a prototype and a production app is reliability, scalability and maintainability. Here's what goes into every app we deliver.

Proper Data Architecture

We design the data model before building any screens. Whether it's SharePoint lists or Dataverse tables, the schema is planned with relationships, data types, indexing and delegation limits in mind. No "add another column when we need it" approach.

Delegation-Aware Formulas

Canvas apps have delegation limits - if your data source has more than 2,000 records and you're using non-delegable functions, the app silently returns incomplete results. We write formulas that delegate properly and design around these limits from the start.

Error Handling & Validation

Every form submission includes client-side validation, clear error messaging, and graceful handling of network failures. Users see helpful feedback, not cryptic errors. API calls include retry logic and fallback behaviour.

Responsive Design

Apps that work on desktop, tablet and mobile. We build responsive layouts that adapt to screen size - critical for field workers using phones and office staff on desktops. No pinch-and-zoom required.

Environment Strategy & ALM

Apps are built in a development environment, tested in UAT, and promoted to production using Power Platform solutions. Changes are version-controlled. No editing live apps and hoping for the best.

How We Work

1

Discover

Map your current process, define requirements, identify the right app type and data architecture

2

Design

Data model, screen wireframes, user flows and integration points. You review and approve before we build.

3

Build & Test

Iterative development with regular demos. UAT with your team before go-live. PCF controls and integrations tested in isolation.

4

Deploy & Support

Production deployment, user training, documentation and ongoing support retainer if needed.

Got a process that should be an app?

Book a free discovery call and we'll tell you which app type fits - and what it'll take to build it.

Book Free Consultation →

Power Apps FAQ

Do we need Power Apps Premium licences?

It depends on your data source and connectors. Canvas apps using only SharePoint and standard connectors are included in Microsoft 365 - no premium licence needed. If you need Dataverse, custom connectors, HTTP/API calls, or model-driven apps, you'll need Power Apps Premium (currently around £16.40 per user/month). We'll advise on the most cost-effective licensing model during discovery.

What's the difference between canvas and model-driven apps?

Canvas apps give you full control over the UI - you design every screen from a blank canvas. Best for mobile apps, simple data capture and task-specific tools. Model-driven apps generate the UI from your Dataverse data model - you define tables, forms, views and dashboards and the framework builds the interface. Best for complex, multi-entity business applications like case management or CRM. We often combine both in a single solution.

Should we use SharePoint or Dataverse as our backend?

SharePoint lists work well for simpler apps - forms, trackers, request management - and don't require premium licensing. Dataverse is the right choice when you need relational data (linked tables), role-based security, business rules, calculated fields, or when your dataset will grow beyond a few thousand records. We recommend the approach that balances your requirements with your budget.

What are PCF controls and do we need them?

PCF (PowerApps Component Framework) controls are custom-built components written in React/TypeScript that extend Power Apps beyond its standard controls. Not every app needs them - many requirements are met with standard components. You need PCF when you want a specific user experience (receipt scanning, signature capture, interactive charts), complex client-side logic, or a truly product-grade feel. We'll recommend them only when they add genuine value.

How long does it take to build a Power App?

A simple canvas app (form-based data capture with approval workflow) typically takes 1-2 weeks. A mid-complexity app with multiple screens, integrations and reporting takes 3-5 weeks. Complex apps with custom PCF controls, API integrations and Dataverse backend typically take 4-8 weeks. We'll give you a realistic timeline after discovery.

Can Power Apps work offline?

Yes, with some constraints. Canvas apps support offline mode with local data caching - users can capture data without connectivity and it syncs when back online. This is essential for field workers and site inspections. Offline support requires careful design around data conflicts and sync strategies - we handle this as part of the architecture phase.

Can you integrate with our existing systems?

Almost certainly. Power Apps connects to 1,000+ systems via pre-built connectors (Salesforce, SAP, Xero, Dynamics, SQL Server and more). For systems without a connector, we use custom connectors or Power Automate with HTTP actions to call any REST API. Your Power App can read from and write to multiple data sources in a single workflow.

Do you offer ongoing support after the app launches?

Yes. Many clients choose a retained support arrangement - typically a few hours per month covering bug fixes, feature additions, data model changes, and user support. We act as your on-demand Power Platform team without the overhead of a full-time developer.