Lovable, Base44, Replit and Bolt.new alternatives: which AI app builder to switch to

Which alternative, in short

No switch removes the meter: each tool counts something different. Lovable counts credits per message, Base44 counts message credits plus separate integration credits, Bolt counts tokens, and Replit counts dollars of credits. What changes is what happens when the balance hits zero, what the live app uses, and how easily your code leaves. If you want to buy more when you run out, look at Lovable or Replit. If you want an iPhone and Android app, look at Bolt. If you want Git and a PostgreSQL database, look at Replit.

All four are AI app builders: you describe what you want in messages and an agent writes the code, a practice often called vibe coding. This page is not a ranking. automascope has not run any of these tools: everything here comes from public pricing pages and documentation, as of the date shown.

Four meters, side by side

Tool	What is counted	When the balance is empty	Buying more
Lovable	Credits per message, by complexity; the same balance pays for the backend and AI of published apps	Building stops, the “Cloud” backend is paused, the published site stays online	Top-ups on Pro and Business, valid 12 months
Base44	Message credits for building, integration credits for the live app	No more messages to the AI until the reset	No purchase described: you change plans
Bolt	Tokens, mostly for reading the project’s files	Free plan: wait for the reset or change plans	Reloads only on the highest monthly Pro tier or an annual Pro
Replit	Dollars of credits, based on the agent’s effort	Usage continues, billed as you go, up to the budget cap you set	Credit packs valid six months (Core and Pro)

Two vendors publish what a request costs. Lovable’s examples: 0.50 credit to change a button color, 0.90 to remove a footer, 1.20 to add authentication. At that rate, the 100 monthly credits of the first Pro tier ($25 a month) cover about 83 “add authentication” messages, or 200 color changes. Base44’s estimates: about 0.5 message credit for a simple visual change, 1 to improve a small feature, 2 for a complex module, 3 to 4 for a sweeping change. The 100 message credits of its Starter plan ($20 a month) cover 200 simple changes, 50 complex modules, or 25 to 33 sweeping changes.

Bolt and Replit publish no per-request figure. Bolt’s rule is that most usage comes from reading files, so the bigger the project, the more each message costs. Replit bills the agent by effort, and the cost of each checkpoint shows in the Agent tab. The full price list of each tool is on its pricing page, linked from the cards at the bottom of this page.

Looking for a Lovable alternative

The documented reasons to leave Lovable:

• One balance pays for everything. Building, the “Cloud” backend (database, authentication, storage) and AI features in published apps draw on the same credits. Base44 splits this into two meters, and database reads and writes use no credits there. Replit lets usage continue past the monthly credits, under a budget cap.
• Web apps only. Lovable’s docs rule out React Native projects and built-in app store submission. Bolt builds iPhone and Android apps with Expo (a mobile development toolkit), to be requested in the first prompt. Replit also uses Expo and sends the app to Apple through its beta distribution service; Google Play is not supported yet.
• The backend only moves to Supabase. Code leaves through GitHub sync on every plan, but leaving the built-in backend means exporting the database and reconfiguring authentication.

See Lovable vs Bolt and Lovable vs Replit.

Looking for a Base44 alternative

The documented reasons to leave Base44:

• No way to buy more credits. The docs describe no purchase of extra credits: the only option is a higher plan, and unused credits expire at the reset. Lovable sells top-ups on Pro and Business and rolls over unused monthly credits. Replit continues on pay-as-you-go.
• Code export starts at Builder. GitHub sync and zip export require the Builder plan or above. Lovable syncs with GitHub on every plan, Bolt offers a zip download of the project, and Replit has Git built in.
• Data and training. Data is stored in the United States by default; EU, UK or Australia storage is tied to Business or Enterprise plans. Outside the Enterprise plan, the vendor says data may be used to train AI models, with no opt-out setting. On Lovable, the “Cloud” backend region (Americas, Europe or Asia-Pacific) is set at activation.
• Store apps run in a web view. For apps built with Expo, look at Bolt or Replit.

See Lovable vs Base44 and Base44 vs Replit.

Looking for a Replit alternative

The documented reasons to leave Replit:

• No published price per request. The agent is billed by effort, in dollars of credits, and the vendor’s pages contradict each other on whether unused Pro credits roll over. Lovable and Base44 publish per-request examples or estimates.
• Publishing is billed against credits. Replit charges deployments by type; only static hosting is free, and on the free Starter plan the single published app is taken offline after 30 days. On Lovable, a live site uses no credits by itself. Bolt includes hosting up to 333,000 requests a month on Free and 1 million on Pro. Base44 hosts the app with no deployment step.
• No Google Play yet. Bolt covers iPhone and Android with Expo.

What Replit keeps: Git with branches managed in the editor, a managed PostgreSQL database, and usage that does not stop at the quota.

Looking for a Bolt.new alternative

The documented reasons to leave Bolt:

• Token usage grows with the project. According to the help center, most usage comes from reading and syncing the project’s files. Lovable bills by the complexity of the request and shows the cost of each message in the history; Base44 publishes estimates by kind of change.
• Reloads are restricted. Token reloads exist only on the highest monthly Pro tier or on an annual Pro. Lovable sells top-ups on Pro and Business.
• The free site can go offline. On Free, past 333,000 requests or 10 GB of bandwidth in a month, the site is offline until the next cycle.
• GitHub sync covers the main branch only. Replit manages branches in its editor.

What Bolt keeps: mobile apps with Expo, a zip download of the project, and manual edits in the Code view that use no tokens.

What the table doesn’t tell you

None of the four vendors publishes what it costs to build a whole app, and a Lovable credit, a Bolt token, a Base44 credit and a Replit dollar of credits do not convert into one another. Comparing entry prices is not enough: compare what happens at zero and what the live app uses. On Base44, the live app spends integration credits (about 1 per email, image, file upload or LLM call in automatic mode); when they run out, those actions fail for the end user. Where data is hosted is not recorded for Bolt or Replit.

How to choose

• You want to top up instead of changing plans: Lovable or Replit.
• You want two separate meters, one for building and one for the live app: Base44.
• You want an iPhone and Android app: Bolt, or Replit if iPhone is enough to start.
• You want Git, PostgreSQL and a budget cap: Replit.
• Still undecided: the comparison of AI app builders goes through the same four tools by need.