Greta is the best software, I've ever bought on Appsumo, and I got a couple that I use a lot and like or love. I bought Greta 2 weeks ago; Today I have a working webapp. I've used other apps in appsumo that claim to help you make "No Code" app, but never fully worked the way I needed. Greta actually writes the code, and to have a production app working you will need to be creative and learn about full stack developing Frontend and Backend; (just learn what it is) to understand what you are building and ask the right prompts to Greta.

Greta starts by giving you a full frontend app with Mockup backend, and that's where you will be challenged and get stuck when you try to launch it. if it's a simple landing page for obtaining leads Greta has full integration with Supabase (i learn thru Greta), and that's not going to be a challenge Greta iteself cannot resolve, but in my case I needed a multi page, multi module, Multi user, multi role webapp, wich required me to integrated with 3rd party User mangement apps like Clerk, no problem with Greta, but if I didnt learn that i didn't know i could have greta build the integration with it. the only code I wrote was { 'role' 'admin' } for clerk which Greta itself gave me. lol. anyway I'm so happy with it, building the app I've built would have cost me an easy 20-40K. It would have takend 6 months minimum. that's the offer I got. I wanted to build this over 2 years ago.

( i did use chatgpt to guide me on the prompts for greta) and it took me 2K credits I initially got Greta TIER 3 but at 1300 credits used i knew i need it more credit. However full disclosure that's because I've built 3 apps, and a few other small ones. the 3rd app took me a total of 1,100 credit to buil it full with many reiterations, fixes, and additions.

what needs to improve: Greta states they are optimize to manage apps with up to 50 files, and my app grew to 70 files, i couldn't manage it anymore as i keep getting errors, but the app is complete and i can manage it with the github and anything i need i can use chatgpt.

I would say that to have a working app if it's complexed like mine u need at least tier 3. or 2 but willing to buy more credits.