I tried Base44 after seeing it blow up on Twitter, and honestly the hype is mostly deserved. You type out what you want, and it spins up a working app with auth, database, and hosting baked in, no bouncing between Supabase and Vercel and whatever else. For a small team trying to validate something fast, that all-in-one stack is genuinely the selling point. I got a working internal dashboard up in under an hour on my first session.
The free plan is brutal though. 25 message credits a month, max 5 a day, and you'll burn through them just tweaking UI. I hit the ceiling on day two, which pushed me to the paid tier faster than I expected. The credit model feels a bit aggressive, especially when you're still in exploration mode and not sure if the thing you're building is even worth $50/month yet.
The vendor lock-in concern is real and I think underreported. You can push to GitHub, which sounds great, but the exported code is tied to Base44's own infrastructure, so it won't actually run anywhere else without a serious rewrite. For MVPs and internal tools that's probably fine. For anything you eventually want to own fully, that's worth knowing upfront, not after 30 days of building.