Subscribe option on iOS app

Hi developers I own "Energia Guanaca App" this is one radio online apps, I currently looking for someone trustworthy who can help me with this small change on my app, I will provide my source code. All I need it's add a monthly plan subscription button on my iOS app like I did it on my Android App. Must look similar to my Android App, please try to find: Energia Guanaca on Play Store. In this small project developer must take care about post this project on iTunnes Connect. Please notice that I'm really looking for someone reliable, trustworthy and responsible, I have 2 projects and I will trust in the same developer always and I lot of work to do. Last guy who worked with me had another project and leave me alone. Must complete this job ASAP Any question let me know.