Good app ideas are hard to come by. A good App idea from head to paper is a tricky task. Coming up with an idea for an app is the biggest challenge. App development is more complex than just typing a few lines of code. Native app development requires experienced iOS app developers or Android app developers. Progressive Web App Development can be done only by experienced web app developers. Hybrid apps that combine elements of both native apps and web apps require experienced developers to function flawlessly. API development, which is often required when creating a mobile app to connect software systems, is a task for experienced API developers. App development can be done by yourself (DIY mobile app development) or outsourced.
A App to develop or to let develop, is bumpier than developing a simple WordPress website, where responsiveness across devices is one of the biggest hurdles.
Take Web apps, e.g. dynamic web apps, portal web apps or e-commerce apps as an example. They must be built to the highest security standards. Imagine a banking app or a government web portal having security vulnerabilities. Reliable software systems need to be built by reliable people who have mastered the art of feeding smartphones and iPhones with cutting-edge apps that work across devices.