# Pneuma: Find your breath

> A pure phaseAt(pattern, elapsed) engine (phase/countdown/cycle/orb-scale, skips zero-length holds; 6 tests) drives one animated orb; a hand-written manifest + cache-first service worker make it installable and fully offline.

Pneuma is a mobile-first breathing-guide PWA built around a single animated orb that grows and shrinks with each phase. The animation is driven by a pure phaseAt(pattern, elapsed) engine that computes phase, countdown, cycle, and orb scale and skips zero-length holds, so the timing logic is fully unit-testable apart from the UI. A hand-written manifest and a cache-first service worker make it installable and fully offline; it is a from-scratch build you can download and run locally.

## About the app

Mobile-first PWA

## What to take away

- A pure phaseAt(pattern, elapsed) engine (phase/countdown/cycle/orb-scale, skips zero-length holds; 6 tests) drives one animated orb; a hand-written manifest + cache-first service worker make it installable and fully offline.
- Download: Pneuma (ZIP)

## Tags

Free software, Pneuma

## Read the full write-up

/downloads/pneuma.zip

## Terms used in this piece

- https://dfieldsolutions.com/en/glossary/service-worker.md

## We build this for clients

https://dfieldsolutions.com/en/services/full-stack

## More from the lab

- https://dfieldsolutions.com/en/lab/sylex.md — Sylex: Make sense of the slashes
- https://dfieldsolutions.com/en/lab/kindra.md — Kindra: Miss a beat, not the rhythm
- https://dfieldsolutions.com/en/lab/voxara.md — Voxara: Argue better. Lose gracefully
- https://dfieldsolutions.com/en/lab/wraithward.md — Wraithward: Spot the bait before you bite

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Source: https://dfieldsolutions.com/en/lab/pneuma
DField Solutions — Torony köz 5-1.a, 2120 Dunakeszi, Hungary — +36 20 722 0002 — dezso@dfieldsolutions.com
Booking: see https://dfieldsolutions.com/en/contact