By the Rocks

Tools

Search or scroll. 24 things across 9 categories.

Finance

Health

  • Exercise

    Plan a week of workouts, then execute them. A pool of exercises, drag-to-reorder day editor, per-set checkboxes, manual rest and HIIT-interval timers with audible cues, and a history of completed sessions.

    Screenshot of Exercise

  • Bridal Skincare Routine

    Daily skincare routine tracker for the 3-month pre-wedding plan, showing AM/PM steps, LED mask schedule, and weekly treatments.

    Screenshot of Bridal Skincare Routine

  • Lateral Flow Test Reader

    Photograph and analyze lateral flow tests with automatic result detection.

    Screenshot of Lateral Flow Test Reader

  • Mood Tracker

    Track daily mood and feelings over time.

AI

  • Recommender

    AI-powered recommendation lists that learn from your feedback using the Anthropic Claude API.

    Screenshot of Recommender

  • Glance

    CLI tool that summarizes large command outputs for LLMs by skimming head/tail and pattern-matched lines.

    Screenshot of Glance

  • Text to Speech

    Convert text to natural speech using OpenAI's TTS API with chunked generation and voice customization.

    Screenshot of Text to Speech

Images

  • Dual-Background Matte

    Combine two AI images of the same scene (one on white, one on black) into a transparent PNG that keeps soft edges and partial transparency.

  • Image Compress

    Compress and resize images in the browser. No upload — everything stays local.

    Screenshot of Image Compress

  • Image Compare

    Upload two images and compare them side-by-side with a draggable slider.

    Screenshot of Image Compare

Utilities

  • PDF Compress

    Compress PDFs in the browser with Ghostscript WASM. No upload — everything stays local.

  • QR Code Generator

    Generate a QR code from text or a URL and download it as a PNG.

  • Transit Converter

    Convert Transit format data to JSON.

    Screenshot of Transit Converter

  • Markdown Preview

    Write and preview GitHub Flavoured Markdown with Mermaid diagram support. Text is saved to local storage.

    Screenshot of Markdown Preview

Fun

  • Coffee Merge

    A Suika-style merge game with drinks — combine matching cups to climb the tier ladder.

    Screenshot of Coffee Merge

  • Chat

    A chat interface emulator. Type in the box at the bottom and watch messages stack above.

    Screenshot of Chat

Learning

Talks

  • Chat Wrapped

    An interactive quiz I built for New Years for my friends

  • Christmas Talk

    Interactive live presentation with audience participation via Ably.

Personal