From vibecoding to full startup business
Just wanted to share with you all the journey me and me fellow indie developer went through
3 months ago, we wanted to try and see whether Claude, ChatGPT and Mistral are capable enough of helping us ship a small mobile oriented PDF scanning/editing application.
We went with Flutter as the tech stack, with native platform channels for message exchanging between the UI side and the heavy processing side which was implemented natively.
It took us 1.5 months to come up with a fully working iOS application which contains ALOT of features: - Merge, split, reorder, rotate, or delete pages - Fill & sign forms - Add annotations, highlights, comments, watermarks - Document Scanning with automatic edge detection & perspective correction - OCR & Text Recognition with over 98% accurracy + edit OCR detected text - Add / remove passwords - 100% offline (no cloud, no accounts, no tracking)
We got a 100$ monthly subscription for Opus and found out it's the best one to use for this kind of development. We generated some of the icons with Gemini and ChatGPT, tailored the app descriptions also with them.
We have made this free to use for now, at some point after we get more user traction we'll probably add a one time charge, no paywalls, no subscriptions. We're now looking into creating a partnership with DigiSign (a local digital provider for electronic signatures) to be able to add digital signing through the application.
So, long story short, if you have any ideas, don't let them go to waste, put in the work and great things will be waiting
Dropping a URL if you're interested https://apps.apple.com/us/app/pdf-master-scan-edit-sign/id6751173174
Cheers, The FSS team
Great insight into the real applications of LLMs. Also interesting to see that you find the Opus model being more successful for app development. In my experience, a combination of ChatGPT with Anthropic models yields the best results in coding.
Out of curiosity, how useful do you find the thinking mode in Claude Code?
Good luck with the PDF app!
Yeah, it's a game changer for speeding up development (the easier parts at least) Thanks !
It produced better code than GPT-5. Then Claude was nerfed by the Anthropic team
Ideas need an execution , glad to know your end result is a successful implementation. thanks for sharing keep shining best wishes for your app team
Thank you!!
great features, congrats to the team! Good luck on future iterations!
Thank you!