Tools Public · 2024 Own product
Codex Tools.
I built Codex Tools because my younger cousins needed help managing university and the existing apps were ad-ridden or paywalled. 11 free, single-purpose tools: CGPA planner, attendance tracker, deadline shield, lab-report templater, and more. Each a self-contained PWA.
The problem.
The student software market is a wasteland of $5/mo subscription apps that ask for an email and never load on a 2017 Android. Bangladeshi students don't need another login. They need a CGPA calculator that works on a 3-year-old phone, on a flaky network, in the back of a lecture.
What I built.
- 11 single-purpose tools. Each does one thing — CGPA planner, attendance tracker, deadline shield, group-project allocator, notes, lab-report templates, exam countdown, and more.
- One tool, one URL. Each is a standalone installable PWA. Bookmark only the ones you use.
- No accounts. Data lives in
localStorage. Open the tab, work, close it. No login screens. - 3 publishing repos. The build pipeline pushes each tool to its own Cloudflare project automatically.
- Made for slow networks. Each tool is <50KB gzipped. Fully usable on 3G.
How I shipped it.
- One tool at a time. Each is a self-contained vanilla-JS app — no shared framework forcing a monorepo upgrade ritual.
- Shared design language only. A common stylesheet for the look, but no code coupling between tools.
- PWA defaults. Every tool ships with a service worker + manifest. Install-to-home-screen by default.
- Cloudflare deploy. Free tier, global CDN, push-to-deploy. Costs zero to run forever.
One tool, one job. No login, no upsell, no subscription.
— the brief
Like what you read? I can ship this for you.
Send a one-line scope and I'll quote within 24h. Three engagement shapes — fixed-price MVP, embeddable widget, or maintenance retainer.