Best AI app builder: six picks by price, meter and free plan

Best AI app builder: the six picks and their entry prices

The best AI app builder for a client portal or booking app on a fixed monthly allowance is Overskill. For a free start it is Lovable or Base44, for token billing Bolt, for effort-priced Agent work Replit, and for billing per user v0 (by Vercel). Entry plans below are billed monthly, as read on October 18, 2026.

Replit and Base44 open their pricing pages on annual rates and v0 bills per user, so every price here is the monthly-billing figure. Credit, token and per-user meters do not compare one for one.

Overskill: best for one business tool on a fixed allowance

Overskill Starter is $25 a month, billed monthly, for 2,500 credits, and Studio is $99 a month, billed monthly, for 12,000. Overskill's credits pay for AI work, such as generating or changing an app. Its pricing page puts a typical change at 400 to 1,500 credits and a fresh build at 2,000 to 8,000.

Its join page names client portals and booking apps as examples. Hosting, page views and sign-ins cost zero credits, and customer payments in an app run on Whop. The limits: no free plan, only 500 starting credits, and access is an invite-only beta or checkout. The Overskill review has the detail.

Lovable and Base44: best for a free start

Lovable's free plan gives 5 daily build credits, up to 30 a month, and Git sync is on every plan. Base44's free plan gives 25 message credits, 100 integration credits and up to 5 apps.

Base44's two meters are separate. Message credits are used when you chat with its AI while building, and integration credits when the finished app uses a built-in service, such as sending an email. Base44 says there is no way to preview an integration credit cost before running an action.

Bolt and Replit: best for token or effort-based billing

Bolt counts tokens. Pro starts at 10M tokens a month and unused tokens roll over for one more month. Replit prices paid Agent work by effort, based on request complexity, and Core is $20 a month, billed monthly. Replit's docs describe a free Starter plan, which its pricing page does not show.

v0 by Vercel: best for billing per user

v0 prices each seat: Plus is $30 per user a month and Business $100 per user a month, monthly only, and Plus includes $30 of credits per user each month. Its free plan stops at 7 messages a day, new users get $5 in one-time credits, and v0 says its prices exclude taxes.

How to choose between the six

A consultant weighing a first client intake app cannot line up Overskill's 2,500 monthly Starter credits, Lovable's 100 and Bolt's 10M tokens, because the units differ. Overskill puts a typical change at 400 to 1,500 credits, while Lovable's docs price a button restyle at 0.50 credits and adding authentication at 1.20. Those figures show why a credit count from one builder says little about another.

• One business tool, such as a client portal or booking app: Overskill.
• A free start: Lovable or Base44.
• Token billing: Bolt. Effort-priced Agent work: Replit. Billing per user: v0.

For the lowest price see cheapest AI app builder, for owners who do not code see best AI app builder for non-coders, and for six priced rivals see Overskill alternatives.