Every app developer is not necessarily an expert app designer too. Designing an app is totally different from developing it and is therefore usually done by different people too. Obviously there are guidelines for either department and this nice little infographic here is one such guide, aimed to assist today’s iOS app designers. It has been developed by Lemon Labs, a team of creative developers and designers.
Most of the design guidelines stand good for all kinds of apps and not just for iOS such as Windows or Android platforms. Check it out below!