Low-code (Power Apps, Bubble) vs custom development: which should you choose?

Low-code vs custom development: which should you choose?

Choose low-code when speed matters more than control and the app is simple, internal or experimental; choose custom development when the software is core, complex, customer-facing at scale, or must be fully yours. Neither is a compromise version of the other. They’re tools for different jobs, and plenty of organisations are best served by using both.

“Low-code” covers a wide range. Power Apps is Microsoft’s platform for business apps, tightly tied to Microsoft 365, Dataverse and Power Automate. Bubble is a visual builder for full web applications, popular with founders building a first product. Both let non-developers build working software, and both let developers go further with code extensions.

What’s the difference between low-code, no-code and custom development?

No-code tools let people build software entirely through visual editors; low-code tools add the option to write code where the visual tools run out; custom development means engineers write the software in a general-purpose language. Custom development is also called traditional or pro-code development.

In practice the lines blur. Bubble is often described as no-code, yet developers extend it with plugins and API calls. Power Apps is marketed as low-code and used by staff who never write a formula more complex than a spreadsheet’s. Enterprise low-code platforms such as OutSystems and Mendix are aimed at professional developers who want to build faster.

A newer category, AI app builders that generate code from prompts, sits between the two: you get real code, but it still needs review, testing and maintenance like any other code. The useful question isn’t the label but where the software will run, who can change it safely, and whether you can take it with you.

How do they compare side by side?

The biggest differences are how cost scales, who can build, and whether you can take the software with you. Details reflect vendor pages as at 28 September 2026; licence prices change, so we link the live pricing pages in the sources.

	Power Apps	Bubble	Custom development
Best for	Internal staff apps in Microsoft 365 organisations	Customer-facing web apps and MVPs, built fast	Core systems, products, complex or high-scale software
Pricing basis	Per licensed user per month (shown in AUD ex GST for Australia); free Developer plan for building and testing	Plans with monthly workload units (server usage), overages or add-ons	Build cost plus hosting and maintenance
How cost scales	With number of users	With usage and app complexity	Mostly with features; hosting grows slowly with users
Who can build	Trained business users, plus developers for complex work	Non-developers with some technical aptitude	Software engineers
Data store	Dataverse (250 MB database capacity per Premium licence, add-ons available), SharePoint, SQL	Bubble’s built-in database	Any database you choose
Australian data residency	Environments can be created in an Australian region for Australian tenants	Bubble-managed hosting; region choice on dedicated instances	Any Australian cloud region
Portability	Tied to Power Platform	No source code export; JSON logic export and data export	Full source code, host anywhere
Limits to watch	40,000 Power Platform requests per Premium user per 24 hours; connector and Dataverse limits	Workload unit consumption, performance on heavy logic	Only what you build and pay for
Mobile	Runs in the Power Apps mobile app	Native iOS and Android apps; publishing to the stores needs a paid plan	Native or cross-platform apps

Where does low-code win?

Low-code wins when the problem is well understood, the users are known, and getting something working this month matters more than getting it perfect. Honest cases where we’d tell you not to hire developers:

• Internal tools in a Microsoft organisation. An equipment register, leave approvals, site inspection forms or an asset tracker for 30 staff. If your people already sign in with Microsoft 365, Power Apps gives you identity, permissions and SharePoint or Dataverse data with little setup, often under licences you already hold for basic scenarios.
• Testing a product idea. A founder validating demand with a marketplace or booking concept can build it in Bubble in weeks. If nobody wants it, you’ve spent little. If they do, you’ve learned what to build properly.
• Replacing spreadsheets and email chains. A simple form, a list and an approval flow are exactly what low-code does best.
• Citizen developers with guardrails. Letting capable staff solve their own small problems, under IT governance, clears a backlog developers would never reach.

Where does low-code break down?

Low-code struggles when logic gets complex, users multiply, performance matters, or several people need to change the app safely. The warning signs are predictable:

1. Complex business rules. Pricing engines, scheduling with many constraints, or multi-step calculations become tangles of visual logic that are hard to read and harder to test.
2. Licence cost at scale. Per-user licensing is cheap for 20 staff and expensive for 2,000. External users on Power Apps need separate products such as Power Pages.
3. Performance. Heavy data processing and large lists slow down, and on Bubble they consume workload units, which raises cost.
4. Engineering discipline. Automated tests, code review, staging environments and rollback exist on these platforms in varying forms, but they’re weaker than in a normal software workflow.
5. Integration depth. Standard connectors are excellent; unusual systems, high-volume sync and complex error handling are not.
6. Platform limits. Power Platform enforces request limits per user per day, alongside connector and Dataverse service limits. Most apps never notice; busy automations do.
7. Lock-in. A Bubble app can’t be exported as code. Microsoft can change licence terms. The more critical the app, the more that matters.

Does low-code keep data in Australia?

Power Platform can; Bubble needs a dedicated instance for region choice. Microsoft’s documentation states that an environment is bound to the region it’s created in, including its Dataverse database, apps, connections and gateways, and that Australian tenants can create environments in Australia. That makes Power Apps a reasonable choice for data that should stay onshore, provided connectors don’t send it elsewhere.

Bubble’s standard plans run on Bubble-managed hosting. Its enterprise documentation offers dedicated instances with a choice of hosting region. If you’re handling personal information on Bubble, check where your app is hosted and record it for your APP 8 analysis under the Privacy Act. Custom software can be deployed in any Australian cloud region you choose, and our data residency explainer covers why processing location matters, not just storage.

What does each cost over three years?

Compare total cost over the app’s likely life, because low-code shifts cost from the build to the licence. Here is an illustration with a clearly hypothetical licence price of $30 per user per month (AUD, ex GST). Use the live pricing page for your actual figure.

Scenario	Low-code (Power Apps style, per user)	Custom build
40 internal users	40 × $30 × 36 months = $43,200, plus perhaps $20,000 to build	$60,000 to $100,000 build, plus about 15% a year maintenance and hosting
400 internal users	400 × $30 × 36 = $432,000, plus build	Much the same as above; hosting grows modestly

At 40 users, low-code wins comfortably. At 400, the licence bill exceeds the cost of a custom build with three years of maintenance. That’s before counting whether the app outgrows the platform. Bubble’s economics differ, because it charges by usage rather than seat, but the same principle applies: model the three-year cost at your expected scale. Our build vs buy guide walks through total cost of ownership in more depth.

How do you keep low-code from becoming a mess?

Treat low-code apps as real software with owners, environments and reviews, scaled to how critical each app is. Most low-code trouble isn’t the platform; it’s dozens of unowned apps nobody can safely change.

• Name an owner for every app, and a backup.
• Separate environments for building, testing and production, so changes aren’t made live.
• Classify data and restrict which connectors may touch sensitive information.
• Review before publishing anything used by more than one team or holding personal information.
• Keep an inventory with each app’s users, data and business importance, and revisit it yearly. The apps near the top of that list are your candidates for a move to code.

When should you use low-code, no-code or custom code? A decision guide

Choose Power Apps if:

1. Your organisation runs on Microsoft 365 and the users are staff.
2. The app is a form, list, approval or tracker with modest logic.
3. User numbers are in the tens or low hundreds.
4. You have IT governance for who can build and publish apps.

Choose Bubble if:

1. You’re testing a customer-facing product idea and speed is everything.
2. You accept a rebuild later if the product succeeds.
3. The data involved isn’t highly sensitive, or you’ve sorted hosting location.

Choose custom development if:

1. The software is how you compete or earn revenue.
2. It serves many external users or needs strong performance.
3. Business rules are complex or change often and need testing.
4. You must own the code, host it where you choose, or pass due diligence for investment or sale.
5. It must integrate deeply with systems that have no standard connector.

If automation rather than apps is the question, see n8n vs Make vs Zapier. For founders deciding how to build a first version, the MVP cost guide compares no-code and coded MVPs.

How All Webbed Labs approaches the choice

We’ll tell you when a Power Apps form or a Bubble prototype is the right answer, because paying engineers for a simple internal tool is poor value. Where custom development is justified, we build it with code in your repository from day one, hosted in an Australian region by default, and we can migrate a successful low-code app into code once it has proved its worth. See our custom software service or startup MVP development.