We Tested 5 AI Product-Building Tools — Here’s What Worked lovable vs Bolt vs Replit vs V0

We put 5 “vibe coding” tools to the test — tools that promise to turn ideas into working products with almost zero engineering.

Tools we tested:

✅ Lovable

✅ Replit

✅ Firebase

✅ Bolt

✅ Vercel

Our goal?

Build a Calendly-style scheduling app, complete with:

– Multi-host availability

– Calendar integration

– Basic UI and backend

– Simulated booking flows

What started as a fun experiment turned into a serious teardown of what works, what breaks, and where each tool shines (or fails hard).

If you're a PM, indie builder, student, or founder trying to ship MVPs faster using AI — this is for you.

Meet Hosts: 

Srinath - [https://www.linkedin.com/in/skotela/]

Phani - [https://www.linkedin.com/in/phanivuyyuru]

Sid - [https://www.linkedin.com/in/sidsaladi/] [https://sidsaladi.substack.com/   [https://mobile.twitter.com/Sidsaladi]

💎 Here are more resources for you

🚀 The Ultimate PM Launch Pad - Blast Off Your Career Now! 🚀

https://www.youtube.com/playlist?list=PL0KSCr65RCTOupMjArBvrML5VWUGzaKqt

🧰 Master the PM Toolkit - Equip Yourself for Success! 🧰

https://www.youtube.com/playlist?list=PL0KSCr65RCTM4acJOjQYFvOVMzfiEFlqE

⚡️ Stay Ahead of the Tech Curve - Charge Your Knowledge Now! ⚡️

https://www.youtube.com/playlist?list=PL0KSCr65RCTMvYe4lAYpfdbDoNdPbA33o

🛠️ Highlights:

– Which tool gave us the best zero-to-one speed

– Why most tools break at the backend integration stage

– Unexpected UX wins and deal-breakers

– Cost vs performance vs “serendipity”

🔥 Final verdict at the end — and it might surprise you.

📩 Got a tool you want us to test next? Drop it in the comments.

Timestamps (Chapters):

0:00 – Intro: Why we’re testing vibe coding tools

1:00 – What is vibe coding and why does it matter?

2:20 – PM workflows without engineering? Let’s find out.

4:00 – Tool lineup: Lovable, Bolt, Firebase, Versal, Replit

5:15 – What we’re building: A Calendly-like multi-host scheduler

6:45 – Common pain points with existing tools

8:30 – Setting up PRD + using ChatGPT to generate it

10:40 – Lovable setup and first impressions

13:00 – Firebase explanation + how pricing/APIs work

16:00 – Bolt early review: UI vs Functionality

18:30 – Replit evaluation: surprising improvement

22:00 – Ranking based on UI, backend, serendipity

27:00 – The simulation debate: fake flows vs real APIs

30:00 – What Lovable still does better than everyone

33:00 – Where each tool shines and fails

36:00 – Cost breakdown: Replit vs Lovable vs Firebase

38:00 – Final tool ratings (out of 10)

41:00 – Who won? Lovable vs Bolt showdown

43:00 – What PMs should consider when picking tools

44:30 – Our advice to teams building their own internal SaaS

46:00 – What's next? Feature requests + tool feedback

Tags :

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