What broke in Bolt (Observed)
- Mobile bug: edit and delete buttons only appear on mouse hover, so they are invisible on touch screens (375×812 emulation).



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Both scored 100/100 on our v1 test (same prompt, free plans, 16 Oct 2026). Both built a working multi-user to-do app with login and a database, with zero fix prompts, and neither leaked one user's data to another. Base44 was faster (about 3.5 min vs about 6 min).
| Bolt | Base44 | |
|---|---|---|
| Score (v1) | 100/100 | 100/100 |
| Prompt → live app | about 6 min | about 3.5 min |
| Fix prompts | 0 | 0 |
| Free-plan cost | about 101K of 1M monthly free tokens (about 10%) | 1 of 25 monthly free message credits (4%) |
| Setup steps | None. Bolt Database + auth (Supabase-backed) applied automatically. | None. Built-in database + auth. Free plan requires the app to be public. |
| Sign-up flow | No email confirmation; sign-up logs straight in. | Email code. If a new user closes the code page, the login screen offers no way to enter or resend the code. |
| Data isolation (user B sees user A?) | No leak | No leak |



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Try Base44Official site, not an affiliate link.
Evidence labels: scores, times, costs and bugs here are Observed in our own runs (screenshots above). Free-plan allowances are Reported by each vendor; percentages are Inferred (our arithmetic). What the labels mean. Disclosures: no tool paid us; commission size never changes a score or tier.
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Both scored 100/100 on our v1 test (same prompt, free plans, 16 Oct 2026). Both built a working multi-user to-do app with login and a database, with zero fix prompts, and neither leaked one user's data to another. Base44 was faster (about 3.5 min vs about 6 min). One run per tool, so treat this as one data point, not a final verdict. Our harder v2 test is next.
Base44: about 3.5 min from prompt to live app, versus about 6 min for Bolt (Observed, 16 Oct 2026).
Bolt: Mobile bug: edit and delete buttons only appear on mouse hover, so they are invisible on touch screens (375×812 emulation). Base44: Closing the email-code page strands a new user: no way to re-enter or resend the code. Logging out does not revoke the access token on the server (the old token still worked).
Bolt: about 101K of 1M monthly free tokens (about 10%). Base44: 1 of 25 monthly free message credits (4%). Neither needed a paid top-up.