I am building a mobile application dedicated to business-focused conversations. Phase one is Android only and zeroes in on a single, polished feature set: sending and receiving text messages in real time. Everything—from the chat UI and contact management to push notifications—should feel as smooth and reliable as popular messengers, yet stripped down to the essentials so teams can focus purely on text-based collaboration. Security is non-negotiable, so please wire end-to-end encryption into every message exchange and store user data securely on the back end. I’m flexible on the technical stack; Kotlin, Flutter, React Native—choose what lets you deliver a stable, lightweight APK that passes Google Play standards. Deliverables • Production-ready Android APK • Full source code with clear, inline comments • Brief setup & deployment guide (readme or wiki) • Confirmation that all text messages sync instantly and remain encrypted in transit and at rest Once this core is rock-solid we can discuss layering voice, video, or iOS support, but right now perfect text chat comes first.