As it sounds, I can develop a client-side app for your requirement using React native technologies. I will develop a client-side app with the message feature.
I have 7+ years of experience in app development and I will pursue projects on technologies including Android, iOS with Java SDK, Native and Hybrid with Objective C SDK, Swift, Ionic, PhoneGap, React native, Firebase, PHP, MySQL, HTML5, CSS3, jQuery, JavaScript etc. I have all major mobile & tablet devices to test the developed Apps in real time & better way.
If you want I can share my React native apps with you which will show you my work quality and experience.
Kindly contact and discuss further to give you the best quotation. Let's discuss further and work together.
Thanks & Regards
Ayush Kumar A.