Hello, thanks for your good post. I have good experiences in flutter app building, my lasted flutter app is dating app with google firebase by backend. If your app use firebase as backend, your notification function and text message sending will be simple and smart, Already I have done similar function (just notification function and sms sending function) on my dating app, so I can finish your project within short time with perfect result. Flutter is very good to build user friendly interface, and firebase will help you to get much and fantastic functions you want. so please let me start to work for your app and I am sure your project's success with my good skills and experiences.
I will wait for your reply anytime, get full time services for your project from me.
Best regards.
Thank you.
And more I can share my worked history to you about my flutter and firebase working.