Counter is a free and ad-free Android application developed by DaisyApps that allows users to count and track multiple items at once. With customizable interfaces, themes, and percent-tracker mode, Counter offers a diverse range of features to meet users' needs.

One of the highlights of Counter is its multiple input modes, which allow users to count by tapping, swiping, or using volume buttons. Additionally, users can set limits for each counter and have multiple lists active at once. For convenience, the app offers homescreen widgets that display the counts for each counter.

Another great feature of Counter is its customizable interface. Users can choose from several themes and customize individual counters with different colors and icons. The app also offers a percent-tracker mode, which lets users track the percentage of completion for each counter.

It is worth noting that Android versions 6 or higher require the storage permission to be enabled to select a custom alarm tone and import/export data. All data is saved under "/DaisyApps/counter/backup". Overall, Counter is a reliable and versatile app for anyone who needs to keep track of multiple items at once.