Bubble vs custom code for a B2B app: total cost of ownership 2026

The verdict in three sentences

Bubble remains the best tool to validate a B2B offer for under 15,000 EUR in 6 to 10 weeks. Custom code becomes cheaper over 3 years once the application passes a few thousand active users, needs heavy integrations or carries a resale value that depends on owning the code. The right time to migrate usually sits between market proof and fundraising, not after a performance incident in production.

What each option really costs

The Bubble subscription price is misleading: the real bill includes consumed workload units, paid plugins, no-code developer time and workarounds whenever a feature falls outside the framework.

These are 2026 ballpark figures for a mid-sized B2B application (account management, roles, dashboards, billing). For reference, Kolonell's grid for a custom application runs from 2.5M to 4M FCFA (3,810 to 6,100 EUR) for a simple scope, 4M to 7M FCFA (6,100 to 10,670 EUR) for medium complexity, and 7M to 15M FCFA and more (10,670 to 22,870 EUR and more) for a complex platform.

Signals that it is time to move to code

Migration is not a simple export. Business logic is locked inside visual workflows: it has to be documented and then rewritten. Allow 60 to 80% of the cost of a new application, with the advantage of a specification already validated by real users.

Mini case study

Illustrative scenario: Thomas, founder of a B2B subcontracting management platform in Nantes, launched a Bubble MVP for 18,000 EUR. Eighteen months later: 120 client companies and 3,500 active users.

• Current Bubble cost: 650 USD a month in subscription and workload, 200 USD in plugins, 4 no-code developer days a month at 500 EUR. Roughly 2,800 EUR a month, 33,600 EUR a year.
• Code option: rewrite at 70,000 EUR excl. VAT, then 1,100 EUR a month for maintenance and hosting, i.e. 13,200 EUR a year.
• Annual difference: 33,600 - 13,200 = 20,400 EUR.

On running costs alone, the rewrite pays back in just under 3.5 years. The decision tips toward code once you add two enterprise contracts conditional on SSO and a security audit, which Bubble cannot cleanly satisfy.

FAQ

Can we keep Bubble for the back office and only code the front end?

It is possible through Bubble's API, but this hybrid architecture doubles maintenance and stays slow beyond a few thousand calls per hour. It mainly serves as a 3 to 6 month transition.

How long does a migration from Bubble to code take?

For a mid-sized B2B application, allow 3 to 5 months, including 2 to 4 weeks auditing existing workflows. User cutover usually happens over a weekend, after a data migration tested twice.

Is Bubble GDPR compliant?

Bubble offers EU hosting on dedicated plans, often above 1,000 USD a month. On standard plans, check data location and sign the DPA before storing customer data.

Will an investor turn down a startup built on Bubble?

Not at seed stage, where validation speed matters more. At Series A, however, vendor lock-in is often flagged as a risk and can lower valuation or delay closing.

Which stack should the rewrite use?

A TypeScript stack with Next.js and PostgreSQL covers most B2B applications and eases hiring. What matters is documenting the architecture and delivering the source code from day one.

Let's scope your project. Send us your user volume, monthly Bubble bill and integrations: we will price a phased rewrite and the economic tipping point. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.