BENCHMARK 1 · SLOTKEEPER BOOKING APP · TESTED OCT 14–25, 2026 · ONE RUN PER TOOL How we test →

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Lovable vs v0 for a booking app: same prompt, same checklist

v0 scored higher (90.875 vs 87.25). Both passed all 10 checks and published free; v0 had 3 minor bugs, Lovable 1 critical and 2 minor.

Test dates: Lovable Oct 21–22, 2026 · v0 Oct 22, 2026 · both on free plans · one run each

§01

Side by side

Lovable · tested Oct 21–22, 2026

87.25 /100

1 CRITICAL 2 MINOR

v0 · tested Oct 22, 2026

90.875 /100

3 MINOR

Points per rubric part; difference is Lovable minus v0.
Criterion	Lovable	v0	Difference
Works end to end	30	30	0
Time to first working version	12	12	0
Bugs	9	12	−3
Design / UX	11.25	11.875	−0.625
Deploy ease	15	15	0
Cost	10	10	0
Total /100	87.25	90.875	−3.625

NoteLovable: Under review: 86.25 if our 5-point critical-bug rule is applied (the scorecard took 4). Corrections.

Points earned
Points lost
Bar segments, left to right: works 30 · time 15 · bugs 15 · design 15 · deploy 15 · cost 10

§02

Lovable: Critical open owner sign-up; finished after an overnight free-credit wait.
v0: 3 minor bugs; ~20 minutes to a published Vercel Hobby URL; admin screenshot not captured.