In everyone&;s mobile phone, there are always a few apps that are not so famous. They may be downloaded on a whim, but later they are found to be more and more easy to use and gradually become software that must be brushed every day. What are these niche and easy-to-use software? Let&;s take a look. Smart tools: It is a very powerful smart toolbox APP, which provides nearly 40 kinds of smart tools needed in daily life, such as ruler, level meter, protractor, speed, flashlight, metronome, compass, thermometer, pedometer, mirror, and some unexpected uses: dog whistle, scanner, polygraph and so on. It can basically solve all kinds of small problems in your life, but this APP only aims at the function of the mobile phone itself and uses it. If you really expect it to help you test all kinds of data very professionally and accurately, you still need to find more professional tools. Snapseed: As a very simple image processing APP, its functions can be said to be very powerful, and many functions can be called Photoshop for mobile phones. It handles the overall sense, color and details of the photo in a very proper way. There is no particularly complicated later stage, and there is no very complicated tool to operate. Just adjusting the parameters can save your photo. Its advantage over other retouching apps is that it can adjust the photos locally, which is very practical and can help you repair the small flaws in the photos, instead of moving them, and the whole photos have been changed. Snapseed is enough for some students who want to retouch pictures and make large movies with their mobile phones. Hydrogen application: The routine of hydrogen application is similar to that of applet, but it was developed long before applet. It is a plug-in container APPlication. After downloading this app, you don&;t need to install any software you usually use, including Netease News, Curious Encyclopedia, Eye-opening Video, Douban, Weibo, Zhihu bilibili and so on. The interface is very simple and the desired functions are very complete. Light reading: a magazine APPlication that integrates various platforms that people are most interested in, such as media, WeChat official account and information app. Gather information from various platforms into a unified reading platform, including Zhihu, 36Kr, Douban, National Geographic, Curiosity Daily, One, and various WeChat official account you are interested in. If you think that downloading too many APPs takes up too much memory, or it is too troublesome to switch between platforms every day, download this app, 500 content platforms and 1,000 popular WeChat official account, and browse all the information in one stop. Fun: fun, as the name implies, collect what you are interested in. We see interesting things every day, and we all form the habit of collecting them for later reading. However, there are more and more collections, and the information is scattered, so it is difficult to remember and read every collection. Collecting fun can help you collect all kinds of interesting articles collected on major platforms on this APP, which can be divided into three collections: forwarding, copying links and system sharing. In addition to integrating your collection, it will also unify the layout of your collection, provide voice reading function, and alsoThese contents are interoperable with kindle, which is a benefit for students who like reading with kindle.