Softr vs B12
Someone typing this wants to turn existing data or a service business into a working web presence without writing code, and is deciding between an internal-tools builder over Airtable or Sheets and a professional-services site with invoicing built in.
The difference that matters
Softr's free tier gives 3 builders and 5 combined app users, stepping up to $19/mo billed annually ($25/mo billed monthly, Basic plan), built for internal tools over Airtable or Sheets, and it's the wrong choice for public marketing sites. B12 starts at $1/mo for the first 3 months before jumping to $49/mo, with a free tier limited to a b12sites.com subdomain and 5 AI credits/day capped at 30/month, built specifically for professional service firms that want a site plus invoicing, and it's a poor fit outside that niche.
Side by side
| Softr | B12 | |
|---|---|---|
| Free tier | 3 builders, 5 combined app users, core building features | b12sites.com subdomain, 5 AI credits/day capped at 30/mo |
| Entry paid plan | $19/mo billed annually ($25/mo billed monthly, Basic plan) | $1/mo for 3 months, then $49/mo |
| Custom domain from | $19/mo (Basic plan) | Paid plan |
| Code export | None | None, lock-in vendor-confirmed |
| Bills in | builders + users | flat monthly |
| Output | Proprietary hosted | Proprietary hosted |
Choose Softr if
You want to turn a spreadsheet or Airtable base into an internal tool your team uses, not a public marketing site.
Choose B12 if
You run a professional services firm and want a public website with invoicing bundled in, and can accept the price jumping to $49/mo after the 3-month intro.
Our verdict
Softr wins for building internal tools over existing data. B12 wins specifically for professional service firms needing a public site plus invoicing, at a much higher steady-state price.
What to watch out for
Softr's $19/mo (annual) / $25/mo (monthly) Basic tier and its 3-builder/5-user free tier are confirmed on its own pricing page. B12's $1/mo-for-3-months-then-$49/mo structure and its free b12sites.com subdomain tier are confirmed on its own pricing page.
Compare against the rest
Both of these sit in the full AI site builder comparison, which covers 12 tools on free tier limits, custom domain pricing and code export.
SearchAll.ai does not sell a site builder and is not affiliated with either tool. Some outbound links are affiliate links, marked sponsored. Affiliate status never affects our verdict or the figures above.