# PhiStruct

> 3D Geometry Builder & AR

Canonical page: [https://chrome-stats.com/d/id6794185906](https://chrome-stats.com/d/id6794185906)

## Overview

- **ID:** `id6794185906`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 箫 王
- **Category:** Education
- **Version:** 1.3.1
- **Last updated:** 2026-09-15
- **First published:** 2026-08-04
- **Size:** 5.43 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/phistruct/id6794185906)
- **Website:** [https://phistruct.app/](https://phistruct.app/)
- **Privacy policy:** [https://phistruct.app/privacy.html](https://phistruct.app/privacy.html)

## Description

Build ball-and-strut polyhedra by touch, explore 134 guided models, place them in AR on iPhone and iPad, and export for 3D printing. One-time purchase. Fully offline.

PhiStruct is a touch-first ball-and-strut geometry builder: you don't just
view finished shapes — you construct them.

Tap a connector ball, tap a glowing hole, and place a strut. Keep going until
you've assembled Platonic solids, Archimedean solids, golden-ratio forms, and
more. Struts are never allowed to pass through each other, so every model is
physically buildable on your desk.

On iPhone and iPad, place a finished model on a table in AR. Mac has no
table AR — mouse, trackpad, and menus only.

WHY IT'S DIFFERENT
• Hands-on construction, hole by hole — like a strut kit in your pocket
• Collision-proof builds: if it builds in the app, it builds in real life
• Exact φ (golden ratio) math — zero drift
• Fully offline. No account. No ads. No subscription.

WHAT YOU CAN DO
• Free build — pick color and length, tap holes, invent your own models
• Guided builds — step through 134 curated polyhedra (flat shapes, prisms,
  Platonic and Archimedean solids, quasicrystal geometry) with the next hole
  highlighted, or complete instantly
• Reference ghost — a translucent target to build alongside freehand
• Parts list — color × length × count for sorting or buying real struts
• Export PNG, full-color GLB (Blender / AR / web), or centered STL for 3D
  printing
• Save and reopen exact project files, including .vZome from desktop vZome

WHO IT'S FOR
• Makers and 3D-printing hobbyists who want to verify a build before printing
• Math teachers preparing a polyhedra lesson — walk through it step by step
• Geometry lovers who want to make something, not just look at it

One-time purchase. Your projects stay on your device unless you export them.

## Rankings

- #1,438,944 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6794185906)