Tested on 16 Oct 2026 · Last updated 16 Oct 2026 · test v1 · 1 run per tool · free plans

Bolt vs Base44 (2026 real test)

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).

Honest limits: one run per tool (depth Tier B), one fairly easy task, free plans only. v1 couldn't separate the top tools, so official tiers wait for the harder v2 test. These tools change weekly; results describe them on 16 Oct 2026. Payment never buys rank.

Side by side

BoltBase44
Score (v1)100/100100/100
Prompt → live appabout 6 minabout 3.5 min
Fix prompts00
Free-plan costabout 101K of 1M monthly free tokens (about 10%)1 of 25 monthly free message credits (4%)
Setup stepsNone. Bolt Database + auth (Supabase-backed) applied automatically.None. Built-in database + auth. Free plan requires the app to be public.
Sign-up flowNo 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 leakNo leak

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).
Bolt app published live
Published
Bolt: second user sees none of first user data
User B sees none of A's data
Bolt on a phone-sized screen: edit/delete hidden behind hover
Bolt on a phone-sized screen: edit/delete hidden behind hover

Try BoltOfficial site, not an affiliate link.

What broke in Base44 (Observed)

  • 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).
Base44 app published live
Published
Base44: second user sees none of first user data
User B sees none of A's data
Base44 on a phone-sized screen
Mobile, 375×812

Try Base44Official site, not an affiliate link.

Which should you pick?

  • Want the quickest path to a live app with zero setup? In our run, Base44 got there first.
  • Read the "what broke" lists: they matter more than the 0–5 point score gap. Mobile bug: edit and delete buttons only appear on mouse hover, so they are invisible on touch screens (375×812 emulation). / Closing the email-code page strands a new user: no way to re-enter or resend the code.
  • Not a coder? See best AI app builder for non-coders.

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.

Still unsure? Take the 5-question "which AI app builder should I use?" quiz.

FAQ

Is Bolt or Base44 better?

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.

Which is faster, Bolt or Base44?

Base44: about 3.5 min from prompt to live app, versus about 6 min for Bolt (Observed, 16 Oct 2026).

What broke in Bolt and Base44?

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).

How much did each cost on the free plan?

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.

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