# Span: Physics Bridge Builder — Truss puzzles, engineering sim

> Truss puzzles, engineering sim (iPhone/iPad app by Dodecki Labs.)

- Source: https://appshunter.io/ios/app/span-physics-bridge-builder/id6790187323 (this page in markdown: same URL + `.md`)
- Developer: [Dodecki Labs](https://appshunter.io/developer/1571436485)
- Category: Games, Puzzle, Simulation
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 60 MB
- Languages: American English, Belarusian, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Brazilian Portuguese, Russian and 5 more
- Released: 2026-07-26
- Data updated: 2026-08-12
- User reviews in markdown: https://appshunter.io/ios/app/span-physics-bridge-builder/id6790187323/reviews.md

## What is Span?

Span is a calm, physics-driven bridge builder. Draw a bridge across the gap, choose your materials, then press Test and watch it carry the load — or buckle in glorious slow motion.

Every beam glows with the forces running through it: a live X-ray of tension and compression, so you can see exactly why it held, or why it snapped. Rewind, move one strut, try again.

• 57 hand-built levels across eight worlds — timber valleys to ocean straits
• Timber, steel, stone, cables and road & rail decks
• Real hazards: wind, earthquakes, thermal stress and floods
• Drawbridges, canal locks, trains and passing ships
• God-mode Sandbox: unlimited budget, every material, every disaster
• Level editor: sculpt terrain, place anchors, schedule the traffic
• One-tap replay export — share your best holds and worst fails

No ads. No timers. No subscription. Buy once, build forever.

Free through Chapter 1 — unlock the full game (all worlds, the sandbox and the editor) with a single purchase.

Road vehicle models by Daniel Zhabotinsky (CC BY 4.0). Full credits in-app.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Span Complete | $7.99 | one-time |



## Version history (last 3 releases)

### 1.2.0 — 2026-08-06

Real trains, real strain. A hand-crafted locomotive family replaces the box trains, and bridges now take a permanent set past 70% load — they sag, survive bent, and carry the scars.

Then play god with the weather. Flame chars timber and spreads along it; freeze makes steel brittle and grows ice heavy enough to sink a deck; zap, pull and tornado do the rest — and you can now grab a car and throw it. (Stars stay honest: experiments don't score.)

Also in 1.2: a new look built on the stress spectrum — the ramp every beam glows with under load, now the app's icon and identity — plus per-world light and geology, iCloud sync across devices, and a roomier iPhone HUD.

### 1.1.0 — 2026-08-01

Play god, properly. Arm the god cursor mid-test and grab the structure, fire aimed gusts, drop concussive blasts, or snip a single member — every effect lands with sound, haptics and a shockwave you can see. (Stars stay honest: experiments don't score.)

Also in 1.1: the Mac app now runs at true Mac scale, sun shadows hug the structure instead of smearing, and the water finally looks wet.

### 1.0.0 — 2026-07-27

No release notes.

## More apps by Dodecki Labs

- [Ensembl: Get it together](https://appshunter.io/ios/app/ensembl-get-it-together/id1572533173)
- [WunderGuide: Travel Concierge](https://appshunter.io/ios/app/wunderguide-travel-concierge/id6745361263)
- [GentlePrep: Colonoscopy Prep](https://appshunter.io/ios/app/gentleprep-colonoscopy-prep/id6760452252)
- [mycellm — Run LLMs](https://appshunter.io/ios/app/mycellm-run-llms/id6761091607)

All apps by Dodecki Labs: https://appshunter.io/developer/1571436485

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*