Termux is a free and open-source terminal and Linux environment emulator for Android platform, developed by Fredrik Fornwall from Sweden in 2015, written in Java. It combines powerful terminal emulation with an extensive Linux package collection, and does not require rooting or setting - out of the box.

Many classic ebooks and tutorials are released in CHM format, while Android doesn't support viewing these files by default. Even many popular ebook readers (such as Moon+ Reader, FBReader, Librera) have poor support for CHM format. In this case, we have to use specialized CHM readers such like SuperCHM, Chm Shelf and Chm Reader X.

Roon is a set of music playback and management system developed by Roon Labs. Sound quality aside, its interface design, recommendation algorithm and content integration have surpassed many regular music players. Its strongest point is that it has the support of TIDAL and Meridian, which can turn it into a high-quality streaming music player along with a huge online music library.

Music lovers usually like to learn a new piece of music or song and skills by playing it repeatedly. Traditional media players, however, can not control the speed at which music is played. Amazing Slow Downer is able to slow down the music playback speed, so that you can learn the music in real-time. It is an ideal tool for any musician, transcriber or dancer wanting to improve their skills.

There are quite a few macro-based automation tools available on Android platform, but the most popular 3 are Tasker, Automate, and MacroDroid. They all work by automating various mobile operations by binding tasks to events/triggers, thus greatly improving smartphone efficiency. Such as: