Once you have designed the interface, you can move on to the visual component and “clean up” the application. The main task at this stage is to bring the design to a single Style Guide.
For the whole application, it is desirable to use no more than 5 – 6 types of the same font (different size, colors and thickness) and 4 – 5 colors. This is enough to set accents and create a neat interface. Also, it’s worth thinking about the animation of the transition from one screen to another: disappearance, displacement, preloader, etc. When selecting colors it is also worth bearing in mind that the color palette of Iphone, as a rule, better than the palette of Android-devices, which means you need to abandon the dirty and related colors.
The final stage is the development of adaptive versions. If the app will be available only for iOS – you’re in luck, because at the stage of creating adaptive versions you only need to draw two versions: for Iphone 6 and Iphone X. However, if your goal is an Android service, you will need to select 4 – 5 of the most popular resolutions in a particular segment of the target audience.
An important stage of UX-design is the usability testing of the developed interface. It includes an assessment of the prototype by a number of parameters:
effectiveness – the user’s achievement of tasks;
Efficiency – time spent on reaching a goal;
Satisfaction with service quality and user experience.
The simplest way to conduct test sessions is to create clickable prototypes in Figma and record the process of using the service, followed by getting feedback. However, there are more advanced services that broadcast the process of user interaction with the application in real time, such as Userlytics, TryMyUI, and UserTesting.
After that, the designer’s mission in creating mobile apps is considered accomplished.