"たまると" is an app exclusively for users to track their steps. It is not compatible with iPads and can only be used on iPhones. The app integrates with HealthKit to utilize step data. Utilizing the step sensor available on iPhone 5S and later models, it requires the app to be launched at least once every seven days to collect step data. It offers rewards based on accumulated points, unrelated to Apple.

This app focuses on step tracking and incentivizes users to stay active by offering rewards based on points earned through step counts. Users need to be aware of the limited time frame for data collection and the app's exclusive use on iPhones for an optimal experience.