Font Scaler is a free Android app developed by Daniel Herr, falling under the category of Utilities & Tools. It is designed to address an issue where the font size is reset on every startup. It offers a solution by allowing users to choose a persistent font size that will be applied automatically on every startup.

Font Scaler is an efficient and easy-to-use app that serves its purpose well. It is especially useful for those who struggle with visual impairments or prefer a specific font size. The app is compatible with most Android devices and can be downloaded for free from the Google Play Store. However, it is important to note that some apps intentionally ignore system font settings, and their font size cannot be scaled by this or other font size apps.