Custom Business App vs Low-Code: Retool, Bubble & Power Apps Compared
Low-code platforms like Retool, Bubble, and Microsoft Power Apps let you assemble business apps quickly, but you rent them per user or per workload, and in some cases you cannot take the app with you — Bubble apps cannot be exported as code. A custom business app costs more to build up front, but you own the code, it does exactly what your process needs, and it does not get more expensive as users grow. Low-code is ideal for simple internal tools; custom wins for customer-facing apps, complex logic, and anything core to the business.
Prices are vendor list prices as of September 2026 — see sources below. Updated .
Custom app vs Low-code (Retool, Bubble, Power Apps) at a glance
| Dimension | Custom app | Low-code (Retool, Bubble, Power Apps) |
|---|---|---|
| Ownership | You own the source code outright | Retool and Power Apps: app lives in the vendor’s platform. Bubble: no code export — apps run only on Bubble |
| Pricing model | One-time build plus hosting; no per-user fees | Retool: per builder and per user. Bubble: plan plus workload units. Power Apps: per user |
| List prices | Scoped per project | Retool Business: $50/builder + $15/internal user per month. Bubble: $59–$549/month. Power Apps Premium: $20/user/month (annual) |
| Speed to first version | Slower — designed and coded | Fast — drag, drop, and connect |
| Complex logic | Unlimited | Possible, but harder to test, version, and maintain as it grows |
| Customer-facing UX | Fully designed to your brand | Constrained by the builder’s components |
| Scaling cost | Mostly flat as users grow | Grows with users, builders, or workload |
The honest answer
Choose Custom app if…
- The app is customer-facing or carries your brand
- It encodes business logic that is central to how you operate
- User counts will grow and per-user pricing would compound
- You need to own the code — for valuation, compliance, or independence
- Performance, offline use, or a specific UX matters
Choose Low-code (Retool, Bubble, Power Apps) if…
- It is a simple internal tool over data you already have
- A handful of users will use it and that will not change
- You need something working this week to validate an idea
- Someone on your team is comfortable maintaining a low-code app
A worked example
At list price, 50 internal users and 2 builders on Retool Business cost (50 × $15) + (2 × $50) = $850 a month, or $10,200 a year. Fifty users on Power Apps Premium at $20 is $12,000 a year. Those costs recur and grow with headcount. A custom app replaces them with a one-time build plus hosting — usually the better deal once an app is long-lived and widely used, and usually not for a small, short-lived tool.
Run your own numbers in the cost calculator →What migration involves
Moving off low-code means rebuilding: the data can be exported, but the screens and logic must be re-implemented in code. The existing app is still valuable as a working specification — it shows exactly what the replacement needs to do, which makes the custom build faster and lower-risk.
If you decide to switch
Custom app vs Low-code (Retool, Bubble, Power Apps) — common questions
Is low-code cheaper than custom development?+
Can you export a Bubble app as code?+
When should we use Retool instead of building custom?+
Can a low-code app be rebuilt as a custom app?+
Sources
- Retool pricing ↗
- Bubble pricing ↗
- Bubble manual — application and data ownership ↗
- Microsoft Power Apps pricing ↗
Vendor pricing changes. Figures reflect each source as of September 2026; check the vendor before deciding.
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