Niche-Knack — precision tools for narrow problems

I'm one engineer in Ohio. I make apps for narrow needs, and I don't call one done when it works; it has to be a pleasure to use. Pocket Nerd catches the daily spending. LedgerKeep keeps the books. Clip Dr. works on the sound. Rabbit Trail follows the evidence. And Choirboy is ready for beta testers.

The catalog is growing: Clip Dr. follows LedgerKeep, then Rabbit Trail. Request Choirboy beta access.

Money

Pocket Nerd

Open. Enter. Done.

A scratchpad for money, in your pocket. Write down what you spent in seconds, see what it does to tomorrow, and change your mind as often as you like. Nothing is wired to a bank. Four themes — and a game to break a tie when you can't decide.

Pocket Nerd Campaign on Android with daily target and pixel-art path
Pocket Nerd on Android

LedgerKeep

Your books. Your files. Your call.

Double-entry books in plain-text Ledger files, with Git history, bill reminders and debts you can fight as bosses. Keep the books on your phone; spread out on desktop for reconciliation, budgets and reports.

LedgerKeep home on Android with favourite accounts and financial readiness
LedgerKeep on Android

Pocket Nerd is for today. LedgerKeep is for the books. Each works on its own. Together, nothing gets typed twice: what you log in Pocket Nerd shows up in LedgerKeep ready to file.

Next in the catalog

Clip Dr.

Find the moment. Fix the sound.

A desktop audio editor for turning long recordings into useful clips. Find a spoken word, cut and arrange tracks, then open Surgery to work on the sound of a selected passage.

Rabbit Trail

Follow the clue. Keep the source.

An evidence board and research archive. Collect documents, scans, notes and recordings; follow names, dates and relationships back to the passages they came from. Capture on Android and investigate on desktop.

Help test Choirboy

Your library. Your rules.

Personal filtering for your music, podcasts and video. See the Android and desktop beta, then request a build for your device.

Meet Choirboy

How this works

These apps don't try to be everything to everyone. Each one does its job very well and stays out of the way. Design is part of the job, not a coat of paint on top.

Local files and useful tools come first. Each product page explains the app’s platforms, how it handles data and what is available now. Purchase terms belong to each product; Choirboy’s beta has its own access process.

Prices, refunds and the fine print: FAQ · license, privacy and refunds.