Base44 for Startups: From Free Prototype to a Paying MVP

A founder can take an MVP from a typed idea to a published app that charges customers on Base44, but the route has two plan gates and one exit cost to plan for. Validation fits on the Free plan at $0, which gives 25 message credits a month (at most 5 a day) and up to 5 apps on a base44.app address. Payments, GitHub sync and backend functions start on Builder, at $40 per month billed annually or $50 per month billed monthly. Before paying for that, apply to Base44 for Startups: it can cover Builder, or Pro for partner-backed founders, for a full year, subject to approval.

The catch sits in the code. Exported code still calls Base44's backend through its SDK, and Base44 does not support self-hosting that backend, so a later move off the platform means a replacement backend and code changes. Plan for it now. An investor who asks where the product really runs deserves a straight answer.

Weeks one and two: a clickable demo on the Free plan

The Free plan is enough to put a working prototype in front of early users. Base44 builds the frontend, database, user sign-in and hosting from a plain-language description, and the first build of an app costs about 1 message credit however detailed the prompt is. After that, Base44 estimates about 0.5 credit for a simple text or visual change, about 1 for a small feature, about 2 for a complex module and 3 to 4 for an app-wide change. Manual edits are free.

The daily cap shapes the schedule. A month's 25 message credits come at most 5 a day, so spending them takes at least five days and a weekend sprint will stall. Discuss mode, at about 0.3 credit per message, is the cheap place to settle a feature before Build mode spends more; by our arithmetic one day's 5 credits buy about 16 Discuss messages. Base44 itself calls the first build a strong draft that still needs validation, permission rules and edge cases, so reserve credits for that cleanup. Credits spent on failed or unsatisfactory AI output are not refunded.

A public Free app carries the Edit with Base44 badge, which also lets anyone copy the app into their own account; hiding it, or limiting an app to invited testers, needs Starter. Free apps still publish on a base44.app address with hosting and SSL, which is fine for a demo link in a pitch email. Search engines treat base44.app addresses as staging sites, though, so a launch page that has to rank belongs on a custom domain.

Charging your first customer means Builder, not Starter

Starter, at $16 per month billed annually or $20 per month billed monthly, adds a custom domain, badge removal, private apps, in-app code edits and an unlimited number of apps. It does not add payments. Charging customers needs Builder, which also unlocks backend functions, connectors, workflows, AI model choice, GitHub sync and the App Store and Google Play files. For a founder who knows the MVP must take money, a stop on Starter is often a detour. The step from Starter to Builder costs $24 a month more billed annually, or $30 a month more billed monthly. ^[1]

Base44 Payments handles one-time charges and recurring subscriptions once the app is published and you have a business and bank account in a supported country, a list that covers the US, the UK, Canada, Switzerland and several euro countries. Base44's product pages list a fee of 2.9% + $0.30 per US card sale on Base44 Payments, with other cards, methods and countries priced differently. Payouts follow business verification and typically arrive in two to five business days. Sales tax stays your job.

Stripe is the other built-in route. Setup starts in a test sandbox with no real charges, the sandbox must be claimed within 60 days by connecting a Stripe account, and checkout runs only on the published app, never in the editor preview. ^[2] Live charges need verified business and banking details at Stripe. Since November 2026 the SDK payments module also handles PayPal from backend functions, which need Builder or higher. Calls to Stripe with your own keys spend no integration credits.

A free year of Builder or Pro, if you qualify

Base44 for Startups is the first thing to check before paying. Founders backed by a participating VC or accelerator can get the Pro plan free for one year, which Base44 values at $960 (twelve months of Pro billed annually, by our arithmetic), subject to eligibility, plus a workshop, a priority support community and co-marketing. Founders building independently, or backed outside the partner network, can apply for the Builder plan free for one year, which Base44 values at $480 (twelve months of Builder billed annually, by our arithmetic), subject to approval. ^[3]

The partner list Base44 publishes includes AirTree, a16z Speedrun, Loyal VC and VU Venture Partners, plus accelerators such as Entrepreneurs First, YC, Antler, Genesis, Startup Grind, The Founder Institute and 8200 EISP. If your backer is missing, partnership is free for VCs and accelerators, so asking them to join costs one email. As of November 2026, the founder templates and startup playbook on the Builder track are listed as coming soon. Both routes pass Base44's own check first.

The Base44 Accelerator is a separate route for teams further along. It runs 12 weeks online with mentorship, masterclasses and credits, takes 0% equity, and gives accepted teams the Elite plan free for those weeks. Base44 says each accepted team gets up to $1M in startup perks (November 2026), and accepted teams join NVIDIA Inception. The Base44 app must be a core part of the business; earlier-stage founders are pointed back to Base44 for Startups. Applications for the second cohort open in November.

Budgeting credits once real users arrive

A startup's bill changes the day strangers start using the app. Every email, AI call, generated image, upload or in-app agent message your users trigger is paid from your workspace's integration credits, not theirs. Base44 counts about 1 integration credit per upload or per email from its default sender (about 2 per email from your own email domain), about 1 per AI call on the Automatic model and from about 3 per agent message. Database reads and writes are free, and Base44 sets no cap on sign-ups. Builder grants 10,000 integration credits a month.

When integration credits run out, credit-using actions fail, your users see a generic error and Base44 emails you; pages and the database keep working until the reset. Credits are granted monthly on both billing terms and unused ones expire at each reset; the only exception is a one-cycle carryover when you upgrade from a monthly plan to a higher monthly plan. Base44 does not publish a way to buy extra credits outside a plan. The only mid-month fix is upgrading. Our Base44 pricing guide lists every tier's allowance.

Runway decides the billing term. Builder costs $480 a year billed annually against $600 a year billed monthly, by our arithmetic, a saving of $120. The annual fee is charged up front, and plans are non-refundable under Base44's Terms; its help center says Customer Care may approve a prorated refund, minus processing fees, for a mistaken purchase or special circumstances. By our arithmetic, nine months of Builder billed monthly come to $450, still below the yearly charge, so monthly wins if the MVP might stop within nine months. Past that, annual is cheaper. A yearly plan cannot be switched back to monthly.

What you own, and what leaving would cost

Base44's Terms say you own the code and apps it generates, to the extent such rights exist, and Base44 claims no ownership of your data. The same Terms give Base44 a perpetual license to that data and output, including to train its AI models, and on every plan except Enterprise there is no opt-out setting. Generated output may not be unique, and you may not use it to build a competing product. Founders whose edge is proprietary data should read that clause before an investor does.

Export is where planning pays. Base44 says two-way GitHub sync exports the full source code (Builder plan and up); its developer docs add that the exported code still calls Base44's backend through its SDK, that Base44 does not support self-hosting that backend, and that data, secrets, app users and version history are not in the code export. ^[4] The ZIP is a React and Vite project, and tables export separately as CSV. Leaving means a new backend.

Treat that as a known cost, not a reason to skip Base44 for an MVP. Connect GitHub once you reach Builder: for an app that was not imported, Base44 creates a private repository with the current code as its first commit. Engineers you hire later can work on the same app from Claude Code, Cursor or Codex through the CLI and the Base44 MCP server, which also needs Builder. Keep the data tables exported as CSV on a schedule, since the code export leaves them out. Scope the backend rebuild as a line item in the post-raise roadmap.

Mobile, enterprise buyers and the limits to check early

Consumer startups often want an app-store listing. Base44 generates store-ready wrapper files on Builder and up, a lightweight shell that runs the published web app in a web view, and you submit through your own Apple and Google developer accounts. Revenue is the harder problem: the store app cannot sell digital goods such as subscriptions, credits or premium tiers, because Base44 apps do not support in-app purchases. A Base44 guide describes selling the subscription on your website and letting the app unlock it, but Apple allows a link to that checkout only on the US App Store, and Google Play allows none. Our mobile apps guide covers submission.

B2B founders should look at what their first enterprise customer will ask for. SSO for app users and data residency need Base44's Enterprise offering, which its help center splits into a self-serve Business plan and a sales-led Enterprise plan; neither price is published. Elite includes them only for workspaces created before October 2026. Base44 says it holds SOC 2 Type II and ISO 27001 certification, but it states it cannot meet HIPAA and does not sign BAAs. Health startups should stop here. Paid accounts are also limited to business or professional use under the Terms.

The bottom line

Base44 fits a founder who needs a working, paying web MVP before a technical cofounder exists. Validate on Free, move to Builder the week you need payments or GitHub, and apply to Base44 for Startups before you pay for that year yourself. Pay monthly while the runway is under nine months. Then write the exit into the plan: the code syncs to your repository, but the backend stays with Base44, so a later move costs engineering time. Health data and in-store digital sales are the two places to choose differently.