Skip to main content
coefficiencies · apps

Little tools. Genuinely useful.

A collection of small web apps I built to scratch my own itches — free to use, no nonsense, no tracking. If one saves you some time, that's the whole point.

What's on the shelf

Each app does one thing and tries to do it well. Some integrate with tools you already use. None of them are trying to upsell you anything.

💰

Remaining

A fresh take on budget tracking. Know what you've got left to spend this month without drowning in spreadsheets or subscription fees.

🧳

Packing List

Smart travel packing lists that sync directly to Todoist. Build a trip, get a checklist in your inbox — no separate app to babysit.

🖖

Star Trek Adventures

A suite of tools for Star Trek Adventures 2e — rules reference, campaign manager, starship simulator, and in-universe storytelling tools.

🏡

Mortgage Calculator

A basic little mortgage calculator to help you figure out when your mortgage will be paid off, and how extra principal payments will affect the pay-off date.

🔧

More brewing…

I build these on evenings and weekends, so the shelf gets restocked slowly. Check back, or subscribe to the newsletter to hear about new ones.

These tools are free.

I build these for fun, on my own time, because I like making things that are useful. If something saved you an hour — or just made you smile — you can buy me a coffee to keep the servers running. No pressure at all.