Jack Cooper

Indie developer. Work free, live happy.

https://www.opusly.ai
https://www.timelinevisualizer.net

What I'm building

Small, focused web tools I build and run solo — free to use, no signup, with an optional one-time upgrade instead of subscriptions. Mostly in the travel and creative space.

Timeline Visualizer
Turn your Google Maps Timeline into an animated travel video, free in your browser
2026 — present

Articles

Guides, fixes, and comparisons from the tools I build.

How to use Timeline Visualizer: from Timeline.json to a shareable travel videotimelinevisualizer.net
Timeline.json is empty? Every reason and the fixtimelinevisualizer.net

Recent activity

15 days after launching to zero audience: $0, 1 follower, 0 stars. The full numbers.

Anyone else had an AI coding agent (Claude Code, Codex, etc.) silently die mid-task when your connection dropped?

I built an offline AI assistant that can actually use your computer

100K app downloads by taking a proven app idea to a different market

Jack Cooper

Timeline Visualizer