Tombola Draw

This is an app for providing fair ticket drawings. You register all valid tickets with a number range and optionally a ticket colour and a letter. You can register several non-overlapping ranges.

Features:

- Each ticket will only be drawn once.

- A ticket range starts with 1 by default, but this can be overridden.

- Previously drawn tickets can be revisited by clicking the Previous button (<). A ticket that is revisited is marked with an R in the upper, right corner to make it clear that this is not a new winner.

- Overlapping ranges are not accepted to ensure that all contenders have the same chance to win. Two ticket ranges are considered to be overlapping if both series have the same colour, the same letter and at least one number in common.

- Each record in the ticket registration window has a circular status lamp. If the record is incomplete, the lamp will be orange. If all is good, it will be green. If there are overlapping ticket ranges, the corresponding status lamps will be red.

- The maximum number of tickets that can be registered is 99 999.

- If you click on the menu icon, you can reset the app, review all registered ticket ranges or adjust the time it will take to reveal the winner ticket.