Cross-Platform Productivity App Development

I’m developing a productivity-focused mobile app and need it launched on both iOS and Android. The core goal is to give users a smooth, reliable way to organise their day-to-day tasks, so the interface must feel instantly familiar and stay responsive even when the schedule gets heavy.

What I’m after:
• End-to-end development – design, coding, basic QA and deployment to TestFlight and Google Play Console test tracks.
• Native or high-performance cross-platform stack (Swift/SwiftUI + Kotlin, or Flutter/React Native if you can guarantee near-native UX).
• Clean, well-documented code that I can build on later.

I’ll supply wireframes and a feature outline as soon as we kick off; you’ll translate them into production-ready builds, advise on best architecture, and set up a small analytics package so we can measure adoption from day one.

To keep things straightforward, please share:
1. One or two recent productivity or utility apps you’ve shipped.
2. Your preferred tech stack and why it suits this project.
3. An estimated timeline broken into key milestones (design, first beta, store submission).

I’m ready to start as soon as I find the right fit, and I’m happy to answer any technical questions you might have before we agree on the scope.