App Development

Business apps

Step 1: The chapter categorises apps into Gaming, Business, Educational, Entertainment, and Travel apps. Step 2: Business apps are those that help in the smooth functioning of a business – billing, accounting, booking, sending mails, tracking work, etc. Step 3: POS (Point of Sale) machines are used for billing in shops and businesses. Adobe Acrobat Reader is used to handle PDF documents in offices. Both are tools that increase efficiency and productivity in a business context. Step 4: These are also referred to as 'productivity apps'. Step 5: Entertainment, Educational, and Travel apps serve c

It facilitates screen sharing and translates conversations in real-time using Skype Translate.

Step 1: The chapter describes several features of Skype specifically. Step 2: Among the notable features mentioned: one-to-one and group video calling, screen sharing, and Skype Translate (which translates each side of the conversation in real-time). Step 3: The screen sharing feature and real-time language translation (Skype Translate) are the most distinguishing features mentioned for Skype. Step 4: Option A describes general messaging features common to many apps like WhatsApp. Option C is about Twitter, not Skype. Option D is incorrect because Skype works on mobile devices, tablets, laptop

Web apps can update themselves, whereas native apps need to be constantly updated by the user.

Step 1: This question tests knowledge from the comparison table between Web Apps and Native Apps. Step 2: Web apps are stored on a remote server. When the developer updates the server, the changes are immediately reflected for all users – so the web app updates itself automatically. Step 3: Native apps are installed on the user's device. To get the latest version, the user must manually go to the Play Store or App Store and update the app. Step 4: Option A is incorrect – only web apps update automatically. Option C reverses the correct answer. Option D is entirely incorrect – web apps are regu

WhatsApp – Brian Acton and Jan Koum; YouTube – Steve Chen, Chad Hurley, and Jawed Karim

Step 1: The chapter provides a specific table of mobile app inventors. Step 2: WhatsApp was invented by Brian Acton and Jan Koum – not Mark Zuckerberg (he founded Facebook). Step 3: YouTube was created by Steve Chen, Chad Hurley, and Jawed Karim. Step 4: Option A incorrectly assigns Facebook's founder to WhatsApp and Twitter's founder to YouTube. Option B incorrectly assigns WhatsApp's founders to Facebook. Option D swaps Twitter and Instagram founders – Twitter was founded by Jack Dorsey (among others), and Instagram by Kevin Systrom and Mike Krieger – not the other way round.