Zawilab

Sortis

Every draw leaves proof.

I built Sortis as a random picker you can actually verify: wheel, dice, coin, teams, raffle, running order, and numbers, all in one app. Every draw keeps its seed, so anyone can reproduce the exact result instead of just trusting it, and you can publish a hash before the draw to prove nothing changed after. It's free to use, with no accounts, no ads, and no subscription, just an optional one-time tip if you want to support it.

iPhone (iOS 16+) · Android (7.0+)

See features Need help?

Sortis draw hub showing wheel, dice, coin, teams, raffle, order, and numbers modes

Features

What you can do with Sortis.

Seven ways to decide
Wheel, dice, coin, teams, raffle, running order, and numbers all live in one app, so you don't need seven different tools for group decisions.
Every draw leaves proof
Every draw records its seed, so anyone can reproduce the exact result. Publish its hash before the draw, and the revealed seed proves nothing was changed after the fact.
Save your lists, reuse them
Type a class roster, a team, or a raffle list once and save it as a pool, or start from a template like Days of the week or Numbers 1–30. Pull it into any mode later without retyping a single name.
Share a list in a scan
Hand a pool to a co-teacher or a friend: they scan its QR code or paste its code, and get exactly the same list.
Teams that keep rivals apart
Balance teams by skill, and mark pairs who must end up on different teams. The split is still random, and still verifiable.
Made for the room
Read each result aloud, choose a quick, normal or long wheel spin, and the screen stays awake while you draw.
Free, private, no subscription
Every feature works fully offline with no account and no ads. Support is entirely optional: a one-time tip if you want to say thanks, never a recurring charge.