Tally counter

A tally counter is a mechanical, electronic, or software device used to incrementally count something, typically fleeting.

At concerts, stadiums, etc., a person will stand by the door with a tally counter recording the number of people that enter.

Gaudiya Vaishnava Hindus may use tally counters to keep track of the number of times that they chant the Hare Krishna Mahamantra.

In modern Muslim practice, prayers are sometimes kept track of using electronic tally counters as well.

[1] A dial counter is a distinct type of tally counter, typically used in board games for keeping count of various status and conditions, such as scores, life points, current phase or turn order.

They are commonly made from two circular cardboard pieces attached at the center so that it can act as a Rotary dial.