The Real Cost of Building an App in 2026: AI vs Developers vs No-Code

Start with the price list, not a range

Most "cost to build an app" articles quote a range so wide it cannot be wrong. That is a guess about somebody else's project. This post does something narrower and more useful: it prices three real builds using GenMB's own published numbers, the per-action credit costs and the plan prices, so you can work out your own bill before you start.

Two things decide what you pay on GenMB. The credit cost of each action you take, and the plan that supplies the credits. There is no per-seat fee, no charge for the people who visit your deployed app, and no separate hosting invoice.

What each action costs

Every action has a fixed credit price. The full table is on the credits docs page. These are the ones that come up in an ordinary build:

Two rules matter more than the table. Credits come out only after an action succeeds, so a failed generation or an errored call costs nothing. And GenMB picks the complexity tier itself: a one-line copy change is charged as a simple edit, not as a generation.

What each plan supplies

The Free plan is genuinely free and not a trial. It gives you unlimited apps, live preview, version history, and a published subdomain. What it does not give you is a real database for your app, ZIP export and the code editor, Agent Mode and GenMB Code, custom domains, or Stripe billing inside your app. Those are Pro. Full list on the pricing page.

Build one: a landing page

A single-page site for a local studio. Hero, services, testimonials pulled from a list you wrote, a contact form, and a live URL.

• Generate the first version (single file): 2
• Six chat edits for copy, colors, spacing, and section order: 6
• Deploy once: 1

Total: 9 credits.

On the Free plan that is two days of the daily allowance, at no cost. Nothing about this build needs a paid plan. If you want your own domain on it instead of the free subdomain, that is the reason to upgrade, not the credits.

Build two: an internal tool

A jobs board for a small operations team. Multi-file React, a table with filters, a form that writes records, and a scheduled agent that emails a daily summary.

• Generate the first version (multi-file): 4
• Four simple chat edits: 4
• Three complex edits, each touching several files: 9
• Three deploys as you iterate: 3
• Create the scheduled agent: 2
• Thirty daily runs over the first month: 30

Total: 52 credits in month one, about 30 per month after that as the agent keeps running and the edits taper off.

This one needs Pro, not because of the credit count but because the scheduled agent runs on autopilot there and the data belongs in a real database.

Build three: a SaaS app with sign-in and payments

Accounts, a paid tier, a dashboard behind the login, and Stripe taking money from your customers.

• Generate the first version (full-stack, backend and database): 6
• One Agent Mode run to wire auth, schema, and the paid gate together: 8
• Six complex edits: 18
• Eight simple edits: 8
• Five deploys: 5

Total: 45 credits to a working, paid, live app.

That is under a quarter of a Pro month. The rest of the 200 is your iteration budget, and unused credits roll over once, up to 400. Agent Mode is the expensive action at 8 credits a run, and it is worth understanding why: it is a goal-driven loop that plans, edits, and verifies across many files, so one run replaces a long series of chat edits.

So what is the monthly number

For all three builds above, the monthly cost is the plan price and nothing else. The landing page runs on Starter at $0. The internal tool and the SaaS app both sit inside Pro at $25/month with credits left over. A team sharing the work moves to Team at $59/month for the shared 1,000-credit pool rather than for any extra feature.

If you run out mid-month, you buy a top-up pack or wait for the reset. Top-up credits do not expire. Your live credit balance and transaction history shows what every action actually cost, which is the only usage number worth trusting.

Hiring is a different purchase

Freelancer and agency rates vary too much by country, scope and seniority for a single number to mean anything, so this section compares the two options on what you pay for, what you own, and what you maintain.

What you pay for. With GenMB you pay for actions. With a developer you pay for time and judgement, including the time spent understanding your business, arguing about the requirement that does not quite work, and handling the case you had not thought of. That judgement is the product. It is not something a credit price competes with.

What you own. Both. GenMB generates real source files that are yours, and hands them to you as a ZIP on Pro and above, with no proprietary runtime or licence key inside. See the export docs. A developer hands you a repository. Neither leaves you renting your own software.

What you maintain. This is the real split. Code a developer wrote is maintained by someone who can read it, and that person may not be you. Code GenMB generated is maintained by describing the change in chat, which works well for feature edits and design changes and stops working when the problem is subtle domain logic that runs without erroring. Money that is off by a sign, a tax rule specific to your jurisdiction, a scheduling edge case around daylight saving: those pass every automated check and still hurt you.

The sensible answer for most people is not one or the other. Build it yourself, put it in front of real users while it is cheap to be wrong, and pay for a developer's judgement on the part of the app where being wrong is expensive.

The honest limits

Credits are metered per action, so a build that thrashes costs more than a build that does not. The biggest lever on your bill is prompt quality: a specific first prompt produces a first version you edit rather than regenerate. The second lever is choosing the right action, a simple edit at 1 credit instead of another full generation at 4 or 6.

And an app that was cheap to build is not automatically cheap to run. Storage, AI calls inside your deployed app, and scheduled agents all meter as they go. They are small, but they are not zero, and the credits page is where you watch them.