I will build a simple offline web app for one business workflow

Need a small tool for a repeated task? I can build a browser-based app that runs locally on your computer for one clearly defined workflow. You provide anonymized sample inputs and an expected result. I deliver the working files, source code, a short run guide, and a sample-based check. This package covers one page and one agreed workflow. Please message me before ordering so we can confirm the fields, rules, operating system, and acceptance sample. The gallery shows an original synthetic-data demo, not a client project. Hosting, user accounts, external APIs, payments, and ongoing maintenance are outside this package.