Umbingo.

Win is a simple, lightweight offline collection of everyday utilities designed to make your daily tasks easier and more enjoyable. The app brings together a balanced mix of useful features, including practical music utilities, soothing focus sounds for productivity, fun reaction tests to challenge your speed, and essential daily helpers. You also get quick access to various sensor utilities built right into your device. With clear icons and simple, intuitive controls, navigation is effortless and direct. Everything is organized so you can find the tool you need in seconds. Best of all, all main features work entirely without an internet connection, giving you complete, reliable access anytime, anywhere.