Optimus Download Manager (ODM), developed by Ahjie521 for Android devices, is a free all-in-one video downloader, media sniffer, and download accelerator that makes downloading video content fast, easy, and more accessible. It also has a private AdBlock browser that ensures a distraction-free, video-finding experience. 

Optimus Download Manager comes with a text-based user interface and offers a seamless video-downloading experience, making it easy to navigate and efficient at saving videos. Additionally, it has offline playback and boasts a floating, built-in video player that runs in the background, so you can use it anytime, anywhere. 

Download and enjoy videos, audio 

As a smart media sniffer, Optimus Download Manager detects videos and audio to download from the web with no difficulty. You can download them in various video resolutions, including 4K, 1080p, 720p, and 480p, as well as high-quality MP3 audio. These files can be downloaded individually with a single tap using the app's floating auto-capture pill feature, so you don't have to go through videos and audio. 

The app highlights a floating picture-in-picture (PiP), allowing you to keep downloaded videos on a small floating screen in the background while running other apps. With its background audio playback that locks the screen, listening to podcasts, lectures, and music streams in video format is interruption-free. This can be navigated using smooth gesture controls, letting you adjust brightness, volume, and playback with ease. 

With a built-in AdBlocker, the app guarantees an experience free of intrusive video ads, pop-ups, and trackers. You can also hide sensitive videos behind a PIN, password, or fingerprint through a fully encrypted vault. Meanwhile, incognito mode leaves no trace behind as it automatically clears history, cookies, and cache. However, some of the best features are hidden behind a paywall.

Convenient media sniffer 

Overall, Optimus Download Manager (ODM) is a practical and powerful tool for detecting downloadable web audio and videos. The download accelerator, built-in AdBlocker, offline playback, various resolutions, auto-capture pill, floating picture-in-picture, smooth gesture controls, fully encrypted private vault, and incognito mode provide a seamless experience not only for saving videos and audio but also for enjoying them. One downside, however, is that some of the best features require payment.