Power Apps or Custom Build? How to Choose for Your Internal Tools

Approval flows, audit trackers, asset registers, HR requests, document intake — every operations-heavy business runs dozens of internal processes. Many still live in email and spreadsheets. When it's time to build a proper tool, the first question is usually: low-code or custom?

There's no universal answer, but there is a reliable way to decide.

When Power Platform is the right choice

Microsoft Power Apps, Power Automate and SharePoint are strong when:

• You already use Microsoft 365. Users, permissions and Teams are already in place.

• The users are internal. Employees, managers and auditors — not thousands of external customers.

• The process is form- and approval-driven. Submit, review, approve, notify, report.

• Speed matters more than pixel-perfect design. A working app in weeks beats a perfect one in months.

• Your team needs to maintain it. Business users can make small changes without a developer.

Typical examples: audit and risk registers, HR request portals, document archives, incident reporting apps, approval workflows.

When a custom build makes more sense

• External users at scale — customers, partners or the public

• Complex logic or heavy computation that low-code struggles with

• A product you plan to sell or that defines your competitive edge

• Strict performance, offline or device requirements

• Licensing costs that grow too large with many users

The questions we ask every client

1. Who will use it, and how many of them?

2. Is it an internal process or a product?

3. What systems must it connect to?

4. Who maintains it after go-live?

5. What is the cost of licences versus development over three years?

A common middle path

Many clients start with Power Platform to digitise a process quickly, learn what the team really needs, and then move only the parts that outgrow low-code into a custom application. The first version pays for itself; the second is built on real usage instead of guesses.

At AltAIEnture we build on both — so our recommendation is based on your process, not on the tool we happen to sell.