In today&#39;s digital era, the demand for smartphone apps has increased to a great extent. Many companies that have well-designed websites are shifting towards mobile apps. This is because applications play a vital role in generating revenue, improving efficiency and increasing customer loyalty. In addition, apps have also helped people to simplify their daily life. There are many applications that people cannot live without. Hence, don&#39;t forget to check out the listed below essential apps for both iOS&nbsp;and Android:PhotomathA perfect mobile app for students that has a camera, allowing you to take the picture of a math problem and it will magically show them the results with detailed explanation. With Photomath+, you can get colorful explanations and you can increase your knowledge.InstagramThe free-to-use app enables you to post photos. It even gives you an option to edit them with wonderful filters as well as useful tools. A feature like Instagram Story allows you to upload a video with a validity of 24 hr.PhotoScanThis is an amazing scanner app from Google that helps you to scan pictures. By using this app, you will get both straight and rectangular scans as well as automatic cropping based on edge detection.BitmojiThis is a very useful mobile app as it allows you to send an image with a message. With this app, you can create your own emoji and can be used on several apps like iMessage, Snapchat and elsewhere.MessengerThis is an exciting messaging app, which provides some amazing features such as you can add stickers to your conversations. There is also an option of viewing the photos of your gallery and videos without leaving the conversation. Moreover, you can send videos and selfies with one tap.Camera FV-5 LiteThis is considered as a professional camera application for your smartphone because the app gives you the effect of DSLR. You will get complete manual control over all photographic parameters, thus you can easily control all the aspects of the picture.YouTubeWith an official YouTube app, you can see the popular music videos, news and can also get to see the influential things of gaming and entertainment industry. Hence, you will have more fun while exploring videos in an easy and quick way. Furthermore, you also have an option to create a playlist, edit and upload videos. Last but not the least, you can express yourself with comments as well as shares.Pokemon GoThis is a free-to-play app which is highly optimized for smartphones. You will be able to discover and catch new Pokemon. You can search far and wide for Pokemon. This means that you should look for Water-type Pokemon or can visit Poke Stops. When you come to the next level then you can catch more powerful Pokemon.In addition to these apps, there are some amazing gaming apps for 2017, which include Airborne, Dots and Minecraft Pocket Edition. All these are some of the smartphone apps for Android and iOS which users should have in their mobile phones in the year 2017.