I will build a custom ai web app or small tool

C
crs818
C
crs818
Catalina R
build a custom ai web app or small tool
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build a custom ai web app or small tool
Full Screen
Full Screen
build a custom ai web app or small toolbuild a custom ai web app or small toolbuild a custom ai web app or small tool

About this gig

I build small AI web apps and tools. Not giant platforms. Things you can actually use: a custom tool, a simple dashboard, an automation with a UI, a trading bot or trading dashboard, or an app that talks to an API.


Recast is one I already shipped. It takes messy AI output and turns it into clean JSON, right in the browser.


I work with Grok and Cursor. Stack is usually Next.js, React, Supabase or Firebase, then deploy on Vercel or Railway. You get the live link and the source code.


Message me before you order. Tell me what the tool should do in plain language. If it does not fit a package, I will say so. I would rather turn work down than take an order I cannot finish well.


Not included:

- Training or fine-tuning a model

- Desktop apps

- A trading bot that promises profit

- Me holding your API keys (you add your own)


I work in English and Spanish.


  • Application Type

    • Web Application

  • AI Type

    • Education
    • Finance
    • Productivity Tools
    • Custom

  • Programming Language

    • JavaScript
    • Python
    • TypeScript
    • React
    • SQL

  • Web Frameworks

    • React
    • Next.js

  • Desktop Frameworks

    • Other

  • No & Low-Code Builders

    • Other

Get to know Catalina R

Catalina R

AI Apps, Automations, and Custom Tools

  • FromColombia
  • Member sinceAug 2026
  • Avg. response time1 hour

  • Languages

    English, Spanish
I build small apps, automations, and AI tools that actually get used. I work in English and Spanish. Most of what I make starts with a real problem: a process that is messy, a task you keep repeating, or a simple product you want working. I build with AI-assisted development and iterate until it is usable. I have already shipped a trading bot and an expense app that way. I like clear briefs and direct messages. Tell me what you need before you order and I will tell you if I can do it.

My Portfolio

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