Dear, client,
Hope you are doing well.
As I am expert, I am willing to fix all bugs and add new features to make app more perfect.
I am senior mobile app developer with high skills of 6 years experience.
I am very happy to bid on your project with my skills.
Master in native android, ios
Familiar with cross plat form like react native, flutter and dart, ionic and xamarin
Full stack developer, working on backend too.
Coding style: clean and structure.
Working style: 8 hours a day and update daily, in your timezone.
I wanna discuss more details via interview.
Hope your kind reply and thank you for your offer.