We definitely live in a world where we all value the benefit of receiving something for nothing, which is why a lot of the most popular mobile apps are ones that are entirely free of charge to download and don't cost anything to use. Consumers may not immediately see the value in developers building software that isn't monetized, but a lot of times, the work is supported by investors or finances that come from advertisers meaning that savings can be passed onto the consumer. The AireTalk app is a great example of a free of charge piece of kit, but it also has a ton of functionality as well.
