Software studio
We build the left inverse of friction.
Left Inverse is a small software studio. We make quiet, precise tools that take the busywork out of a task and recover exactly what you put in.
B A = I — a left inverse recovers exactly what A encoded.
The idea
A task is a transformation. We write the one that undoes it.
Every product here is a left inverse of a single, specific friction — the matrix that takes a thicket of steps and pulls your intent back out of it, unchanged. No platform, no feature pile. Just the result you wanted, recovered.
Portfolio
Three inverses,
so far.
Each product undoes one specific friction. Open any of them.
↤ the inverse of clutter
Phantom
Native macOS apps
A line of native Mac apps — on-device dictation and a suite of ambient menu-bar tools that appear when you need them and vanish when you don't.
↤ the inverse of guesswork on the road
Outdoor Salah Scheduler
Muslim-friendly travel in Taiwan
Plan a day trip around prayer and halal food. Find prayer rooms and mosques, halal and Muslim-friendly dining, and build a prayer-aware schedule for anywhere in Taiwan.
↤ the inverse of circling the block
Yo Parking
Real-time parking in Taiwan
A crowdsourced parking map for Taiwan. Live, community-reported availability — see which curbside spaces are open near you before you arrive. In Traditional Chinese and English.