Roll Hippo is a dice tray for tabletop play, and the interaction is deliberately physical: you build your dice groups once on the Setup screen, and from then on the phone is the tray. Hold it upright, shake, set it down. The dice tumble on a 60fps accelerometer-driven rigid-body simulation and settle where they settle. Two screens, no account, no network call, no analytics, no ads — it works with the SIM removed, and the tray shows nothing but dice.
The herd's first mobile app. Set your dice up once, and after that the phone is the tray — hold it upright, shake it, set it down, read the result.
The honesty rule. The tumbling is presentation. The values are drawn from a uniform random number generator at settle time and are never derived from the physics state. A dice app that is coy about its randomness has no business asking for your trust, so this is said in the app, the guide, and here.
Shake to roll
The accelerometer drives a real rigid-body simulation at 60fps. Hold the phone upright, shake it, and set it down — no button, no gesture to learn.
Dice groups, set once
Build the sets you actually roll on the Setup screen. The tray then holds exactly those, and nothing else: no log, no running total, no re-roll button.
One codebase, both stores
Flutter and Dart, shipping to the App Store and Google Play from a single source tree — the family's first mobile application.
Completely offline
No account, no network call, no telemetry. Nothing the app knows about you ever leaves the device, because nothing ever leaves the device.
Honest randomness
Values come from a uniform RNG at settle time. The simulation decides how the dice look, never what they say.
Not a gambling app
A utility that produces uniform random integers with a physical interaction. No wagering, no casino, no simulated stakes.
Downloads
Not out yet
Roll Hippo is heading for the App Store and Google Play. There is nothing to install today — the repository is the place to watch, and this page will carry the store links the moment they exist.
