Testament Made is a small independent app studio by Derek Castelli

Here’s My Church Web · Church finder

Find your church, or a new one.

  • Browse churches on an interactive map
  • Filter by denomination, size and language
  • Service times, address and ministries
  • Add a church or suggest an edit, no account needed
heresmychurch.com

Slinky macOS · Developer tools

Slinky keeps secrets out of files.

  • API keys, project .env variables and recovery codes
  • AI agents use your keys without seeing them
  • Finds keys left in files, git history and chats
  • About 5 MB, for Apple Silicon, open source
GitHub

Harvous Web · Bible study

A study Bible that remembers.

  • Save notes, scripture and highlights in one place
  • Organize them into folders and threads
  • Find what mattered again, fast
  • Day and Night themes
harvous.com

ReviseMy Web · Design review

Mark feedback for your agent.

  • Your agent captures a page, screenshot, PDF or email
  • You mark what matters, then approve or ask for changes
  • Works with Claude, ChatGPT, Copilot, Cursor and Grok
  • Open source
revisemy.com

Dinky macOS · Utilities

Dinky makes files smaller.

  • Images, videos, audio and PDFs
  • Drag, compress, done
  • About 35 MB, for Apple Silicon
  • Free and open source
dinkyfiles.com

Binky macOS · Productivity

Binky sorts your files.

  • Quick Sort tidies Downloads in one tap
  • Routines keep watching with your own rules
  • Unknown files wait in Review, so nothing is lost
  • No cloud, open source
binkyfiles.com

Koati Web · Marketing teams

The inbox for work to be done.

  • Requests from sales, product and agencies land in one place
  • Agree on the work before it starts
  • Whoever asked can see where it stands
  • Hands tasks to the tools your team already uses
Coming soon