Eggshell Guard
Eggshell Guard
Eggshell Guard is an engineering-physics workbench for the classic STEM 'egg drop challenge' — built for middle/high-school science teachers, robotics-club coaches, homeschool parents, and science-fair students who design protective capsules to keep a raw egg from cracking when dropped from increasing heights. Instead of guessing with tape and bubble wrap, the app lets users engineer a capsule digitally, simulate the physics of the fall, log real-world test results with photos, and run a full classroom tournament with a live scoreboard — turning a one-off playground experiment into a repeatable, data-driven engineering project.
About Eggshell Guard
Eggshell Guard is an engineering-physics workbench for the classic STEM 'egg drop challenge' — built for middle/high-school science teachers, robotics-club coaches, homeschool parents, and science-fair students who design protective capsules to keep a raw egg from cracking when dropped from increasing heights. Instead of guessing with tape and bubble wrap, the app lets users engineer a capsule digitally, simulate the physics of the fall, log real-world test results with photos, and run a full classroom tournament with a live scoreboard — turning a one-off playground experiment into a repeatable, data-driven engineering project.
Highlights
Capsule Blueprint Designer: pick a shell-wrap sh…
Capsule Blueprint Designer: pick a shell-wrap shape (box frame, sphere wrap, parachute, straw nest), layer cushioning materials (bubble wrap, foam, cotton, straw, rice, balloons) and adjust thickness with sliders while an animated cross-section diagram updates live
Physics Drop Simulator: enter drop height and ca…
Physics Drop Simulator: enter drop height and capsule mass to run an animated SpriteKit fall-and-impact sequence that computes deceleration distance, peak g-force, and a predicted crack-or-survive outcome
G-Force Comparison Charts: Swift Charts graphs p…
G-Force Comparison Charts: Swift Charts graphs plotting impact-force-over-time curves so students can compare two or more capsule designs side by side and see which cushioning wins
Real-World Trial Logger: after an actual test dr…
Real-World Trial Logger: after an actual test drop, log height, outcome, and a camera photo of the capsule, rate crack severity on a visual scale, and build a running trial-history timeline per design
AR Height Measurer: point the camera at the drop…
AR Height Measurer: point the camera at the drop location using an ARKit measuring overlay to get an accurate real-world drop height before a test, instead of guessing by eye
Materials Science Almanac: a reference library o…
Materials Science Almanac: a reference library of common cushioning materials with shock-absorption rating, density, cost tier, and eco-friendliness icons, each with a short 'why it works' diagram
Privacy first
Eggshell Guard does not collect personal data — everything stays on your device, with no third-party tracking or advertising SDKs. Read the full Privacy Policy.
Support
Questions or feedback? Visit Support or email alannelson9296@gmail.com.