The following Android apps can be used to add time, date, and your name to videos that are already in your phone's gallery:
OverLay FX: This app is very useful for adding text, stickers, and watermarks to videos. You can use it from social media platforms as well as from your smartphone. Its user interface is well-known, simple to use, and intuitive.
Videoshop: Videoshop is a useful, free app that lets you overlay text on videos. In addition, this app offers a plethora of editing functions like cutting, merging, reversing, and more.
InShot: InShot is a professional video editing app that is perfect for Android users. It lets you modify the text as well as its features that will surely capture your curiosity, which are transitions, stickers, music, filters, and even special effects.
VivaVideo: VivaVideo is a video editing app that lets you add a text watermark or an extra layer of images to your video by just simply dragging and dropping.
FilmoraGo: FilmoraGo is a potent video editing application that can make an ugly video look beautiful. You can add a variety of text features, filters, and transition effects. This also involves modifying the tone, saturation, contrast, and brightness. It has an extremely user-friendly interface.
All things considered, the majority of the aforementioned apps have paid versions that allow users to access all of their features. Some of these only require a premium or one-time payment; one such feature is the ability to remove the watermark after you have finished editing your video.