nombi-sioi // rhythms.v0.5
3 RHYTHMS · LIVE
$ nombi-sioi --rhythms

Time. Effort. Rest.
Software for the rhythms that run a day.

Nombi Sioi makes small iOS apps for the three rhythms most people skip — how time passes, how effort accrues, how rest restores. Each app is small on purpose, and built by a small team using agentic engineering to keep it that way.

rhythms.day
time
keytimes
day · week · month · year → home_screen
effort
fitsimp
session → set → rep → rest · healthkit
rest
nappilot
sleep_detected → 20min → wake_alarm
Time → KeyTimes
Released on the App Store

KeyTimes. How time passes, on your home screen.

See your day, week, month, and year as clear progress views. Add Year Meter, Month Meter, and Life Progress widgets to your Home Screen, then choose the visual style and typography that fit your setup. Everything stays on your device.

  • Year Meter · Month Meter · Life Progress
  • On-device only · no tracking · no analytics
  • Free to download · iPhone + iPad
Effort → FitSimp
Released on the App Store

FitSimp. How effort accrues, set by set.

A customizable gym tracker built by someone who actually trains. Log sets in seconds, build templates around your routine, and see which muscles you’re training. Track progress on iPhone and iPad, with an Apple Watch companion and Live Activities for your rest timer.

  • Muscle maps · recovery tracking · workout history
  • Workouts stay on your devices · optional Apple sign-in in 1.1.2
  • Seven free workouts · FitSimp Pro for more workouts
  • No in-app ads · Meta measurement only with your permission in 1.1.2
Rest → NapPilot
Coming soon

NapPilot. How rest restores, in twenty minutes.

Power naps that wake you on actual sleep, not on a guess. HealthKit detects the moment you drop off, then the wake fires after the duration you set — on phone and watch together.

  • iPhone + Apple Watch · synced wake
  • HealthKit sleep detection · not just a timer
  • Quiet on the wrist, loud on the phone
/* why so small */

We could build one big app. We don't.

Each rhythm gets its own surface, its own home-screen real estate, its own attention. We'd rather build three good apps than one mediocre platform — and we'd rather you open the one you need than navigate to it.

/* the engine */

How a small team ships three apps.

Agentic engineering — planning agents that decompose specs, coding agents that implement against tests, review and ship loops that keep humans in the seat where it matters and out of the way where it doesn't. The apps are the product. The engine is how they ship.