Dufengxun is a small, senior team. We work from Hanoi, ship globally, and treat every product as a reflection of how we see the world.
We are a focused product studio of mobile engineering and design professionals. Every team member has spent years shipping native apps for iOS and Android — and we keep that knowledge in-house rather than outsourcing what matters most.
Our engineers have shipped multiple native iOS and Android apps to the App Store and Google Play. We are fluent in Swift, SwiftUI, Objective-C, Kotlin, Jetpack Compose, and Java — and we know when to use each.
Designers who think in systems, not just screens. We produce cohesive visual languages that scale across features, themes, and accessibility modes — with motion treated as a first-class material.
Engineers and policy specialists who treat privacy as a craft. They audit data flows, write consent flows, draft privacy nutrition labels, and ensure every release is ready for GDPR, CCPA, LGPD, and PIPL review.
Dedicated specialists for micro-interactions, haptics, transitions, and accessibility-aware motion design. We believe a great animation is one you don't notice consciously but feel everywhere.
Engineers and designers who specialize in turning personal data into meaningful visuals — charts, calendars, heat maps, radial views, and bespoke representations that respect the user's cognitive load.
Specialists who keep us honest on App Store, Google Play, ATT, Privacy Sandbox, IAB TCF, and regional privacy regimes. They pre-flight every release so the rest of the team can stay focused on craft.
These are not posters on a wall. They are the constraints we use to decide what to build, what to remove, and what to refuse.
Privacy first. Experience second. Monetization third — and only when it doesn't compromise the first two.
— Order of OperationsLess, but better. Every feature must earn its place. We remove more than we add.
— Minimalism as DisciplineNative or nothing. We do not ship cross-platform compromises. Performance and feel are non-negotiable.
— Platform RespectThe user is the operator, not the product. Their data belongs to them and to no one else — including us.
— Data SovereigntyBeauty is a function. Aesthetics serve comprehension. Form and feature are the same thing.
— Design as FunctionQuietly excellent. We don't shout. Our products speak through their fit, finish, and behavior.
— RestraintOur workflow is lean, asynchronous, and built around shipping working software — not artifacts that look like progress.
We start by listening. To users, to data, to context. Every product begins with a problem worth solving — not a feature worth building. We validate before we prototype.
Wireframes, IA, and interaction prototypes first; high-fidelity art later. Every flow is reviewed for accessibility, motion, and platform conformance before engineering begins.
Native code, modular architecture, unit & UI tests, and continuous integration. We treat performance and privacy as architectural concerns, not afterthoughts.
Internal QA, external beta cohorts, privacy review, and App Store / Google Play compliance audits. Nothing ships without passing every gate.
Phased rollouts, monitored releases, and a clear go-to-market plan that respects regional regulations. We communicate transparently with users about what's new.
Post-launch is where products become good. We monitor, listen, and quietly improve — version after version, with respect for users who chose to trust us.