Apps

Small, private Android apps. No ads, no tracking.

Contractor Invoices & Expenses

The job tracker that runs itself.

Easy invoices, organized expenses and time tracking, made as easy as possible. No ads and no bloat. Built by a handyman who uses it himself.

  • One tap invoices from your unbilled labor and expenses.
  • Never punch in again: walk onto a job site and it clocks you in.
  • Quick expenses: snap a receipt and it files itself to the right job.

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Contractor Invoices & Expenses clocked in on a job, beside the invoice it turned the hours into.

Animated Fractal Wallpaper Art

Fractal live wallpapers you tune yourself.

A set of highly customizable fractal artwork wallpapers. Each one is generated as it plays.

  • Six wallpapers: Infinite Spiral, Shifting Tiles, Plankton Bloom, Folding Snowflakes, Mandelbrot Set and Julia Fractals.
  • Stays out of your way: no popups, no ads, no sign-in.
  • 100% private: no accounts, no tracking, no permissions.

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Four of the wallpapers, Infinite Spiral, Shifting Tiles, Mandelbrot Set and Julia Fractal.

Kids Science Microscope Worlds

Explore a microscopic world of cells and microbes.

A living drop of pond water for kids, as an app and a live wallpaper.

  • Meet the creatures: tap one for its card, with real scientific names explained in kid-friendly words.
  • Collect them in the field guide, then pinch to zoom and turn the focus.
  • On your home screen: the slide swims behind your apps, with rare visitors like Volvox and the tardigrade.

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Petri Dish: tiny discoveries, big curiosity. A slide of pond water full of microscopic creatures.