Newton's Cradle, Unbound vs Fruit Timer

Explore the physics of Newton's Cradle in a whole new way. Unlike traditional cradles where balls swing in a single line, this simulation lets them move freely in any direction on a horizontal plane. Watch momentum and energy transfer through collisions as you experiment with different configurations. Pull balls to any position and release them to see the physics unfold. Features: - Realistic physics simulation with adjustable parameters - Multiple ball configurations and lattice arrangements - Real-time statistics showing energy and momentum - Simple, intuitive touch controls Perfect for physics students, educators, or anyone curious about classical mechanics.

Fruit Timer is a visual countdown timer that gradually reveals an image clockwise as time passes. Follow the picture and large countdown to see how much time remains. Choose watermelon, orange, or kiwi, use a favorite photo, or try the included Pomeranian, Dalmatian, and Shiba Inu portraits. Use it for studying, focused work, getting ready, tidying up, and taking breaks. Tap the large time display, choose a duration, and tap Start. Switch images while the timer is running, or pause, resume, and reset whenever you need to. Make the timer your own • Touch and hold an image button to choose a dog portrait or a photo • Zoom and adjust the position to fit the circular display • Adjust a saved image again or restore the original fruit for each slot Everyday features • Set a duration from 1 second to 59 minutes 59 seconds • Large remaining-time digits and a circular image that shows elapsed time • Pause, resume, reset, and repeat the same duration • Separate sound and vibration settings • A local completion notification when notifications are allowed • Live Activities with remaining time on the Lock Screen and in the Dynamic Island on supported iPhones • An option to keep the screen awake during a timer • On iPad and iPhone Duo, a large layout that fills the screen, with the image beside the controls in landscape • Portrait display on iPhone; iPhone Duo also supports landscape • An optional hiragana and katakana display mode when using Japanese • 21 language and regional localizations No account is required. There are no ads, in-app purchases, or subscriptions. The timer, included dog portraits, and editing of imported images work offline. Selected photos are stored in the app and are not uploaded to a developer-operated server. Your original photos are not modified. Notifications and Live Activities depend on your device and system settings. Loading a photo from iCloud or opening store and support pages may require an internet connection.