Cross or Crash
Design it. Test it. Cross it.
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Design a bridge, run the load test, and let a real physics engine decide: can you cross, or does it crash?
Cross or Crash is a bridge-building puzzle with an honest engineer underneath it.
Lay road, wood, steel and cable across the gap, then run the load test and watch a stickman walk out onto what you built. There is no scripted outcome. A real 2D truss solver works out the force in every single member, checks each one against what that material can actually take — including the way a long thin strut buckles rather than snaps — and decides from that whether your span holds or comes down.
BUILD ON A REAL BLUEPRINT
Tap joint to joint on a snapping grid. Four materials, each with its own cost and strength. Undo, redo, erase, and a running budget so you always know what the span is costing you.
SEE THE WEAK SPOT BEFORE IT BREAKS
Turn on the live stress view and every member is coloured by how hard it is working. The beam that is about to fail is the one glowing red — before you ever press Test.
EARN YOUR STARS
Crossing safely is one star. Beating the par budget is another. Holding with a real safety margin is the third. A 0–1000 efficiency score rewards the elegant answer over the heavy one.
ELEVEN LEVELS, THEN A NEW ONE EVERY DAY
Three packs of hand-built crossings ramp up the gap, the drop and the load. The Daily Bridge is generated from the date, so everyone in the world gets the same crossing — clear it to keep your streak alive.
CLIMB THE LADDER
Apprentice to Chief Engineer, driven by the stars you have banked. Your best design on every level is kept so you can reopen it and try to do better.
THE WHOLE GAME IS FREE
The physics engine, all four materials, the first campaign pack, the stress view, ranks, stats and unlimited retries cost nothing, forever. We do not lock the build-and-test loop.
MASTER BUILDER PASS (optional subscription)
Adds the advanced campaign packs, the Workshop level editor, unlimited saved blueprints, Daily Bridge replays and the full analytics.
- Monthly $4.99 or annual $29.99, both with a 7-day free trial
- Payment is charged to your Apple ID at the end of the free trial. The subscription auto-renews unless canceled at least 24 hours before the current period ends, and you can manage or cancel it anytime in your App Store settings.
Privacy Policy: https://preview.apppublishing.ai/legal/172/privacy
Terms of Use (EULA): https://preview.apppublishing.ai/legal/172/terms
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The developer, App & Ink Incorporated, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- App & Ink Incorporated
- Size
- 42.2 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Master Builder Annual $29.99
- Master Builder Monthly $4.99
- Copyright
- Copyright © 2026 App & Ink Incorporated
