STATUS · LIVE · BUILDING v8.3

Crafting privacy-first software with the soul of Zen.

YUEJIETRADE is a global research & product team focused on programmatic generation, immersive interaction design, and bullet-proof privacy engineering.

42+
Shipped Products
180K
Active Users
38+
Countries
100%
Local-First
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Where Technology Meets Humanity

Three guiding principles shape every product, every line of code, every pixel we ship.

/01

Minimalist Design

We strip complexity down to its essence. Every element earns its place. Visual harmony is not decoration — it is function.

/02

Privacy by Default

Your data never leaves your device unless absolutely necessary. No tracking. No profiling. No cloud lock-in. You stay in control.

/03

Experience First

We craft immersive flows that feel like meditation, not work. Each interaction is engineered to bring focus, calm and delight.

A real-time pulse on our work

Numbers we actually track — privacy-preserving analytics aggregated from our production matrix.

MONTHLY ACTIVE

SYNCED
Q1 STARTQ4 +443%

RETENTION

STABLE
Day 1 — 68%
Day 7 — 22%
Day 30 — 10%

STACK DISTRIBUTION

HEALTHY
SwiftKotlinRustC++JS

QUALITY INDEX

NOMINAL
Crash-free Sessions99.8%
App Store Rating4.8 / 5
Test Coverage87%
NPS Score72

Six core capabilities, infinite expression

From real-time audio synthesis to private data vaults — we engineer every layer with obsessive detail.

Programmatic Generation

Break free from static templates. We build systems that produce organic, ever-changing experiences at scale.

ProceduralRealtime

Immersive Interaction

Interfaces that feel alive. Subtle motion, tactile feedback and emotional resonance engineered into every micro-interaction.

MotionUX

Privacy Engineering

Local-first architectures, end-to-end encryption, zero-knowledge patterns — we make privacy a feature, not a footnote.

E2EELocal-first

Audio Synthesis

Multi-track offline editors, DSP engines, generative soundscapes — built by musicians, for musicians.

DSPOffline

Mobile Engineering

Native iOS & Android with cross-platform reach. Swift, Kotlin, Rust — whatever the platform deserves.

iOSAndroid

Product Innovation

From idea validation to launch and iteration. We sweat the smallest details so your users feel the difference.

R&DLifecycle

A trajectory of deliberate craft

2018

The Studio is Founded

Two engineers, one designer, and a single mission: build software that respects people.

2020

First App Store Release

Our offline audio editor debuts at #1 in the Music category across three regional stores.

2022

Privacy-First Manifesto

We publicly commit to local-first architectures and reject surveillance-based business models.

2024

Programmatic Engine v3

The core R&D platform reaches production maturity, powering 12+ shipped applications.

2026

Global Expansion · 38+ Countries

180K active monthly users across iOS and Android, fully bootstrapped, no external funding.

// RECENT ACTIVITY

LIVE
Audio Engine 4.2 — Released
v4.2.02025-09-12+18% perf
Pantry Tracker — iOS 26 ready
Build 2025.09Privacy audit passed
Trip Logger — Offline Maps v2
Beta · 1.2k testers4.9★
License Vault — E2EE refactor
SecurityPen-test passed
Goal Engine — Programmatic tasks
Release 2.4+12% retention
Collection Vault — Visual search
BetaLocal-only AI

From the studio journal

Product launches, engineering deep-dives and design essays — all written by the people who build the things.

// PRODUCT LAUNCH
Product·Sep 12, 2025·4 min

Audio Engine 4.2 — Programmatic Synth Patches

Our latest offline audio editor release brings generative patch libraries, 18% performance gains, and a redesigned transport bar.

Read article
// ENGINEERING
Engineering·Aug 28, 2025·11 min

On-device E2EE: a practical guide for iOS engineers

What we learned shipping local-only encrypted sync — key management, threat models, and the mistakes we made.

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// DESIGN ESSAY
Design·Aug 14, 2025·7 min

The motion grammar behind Zen-grade mobile UX

How we built a single timing system so that every animation feels like part of one breath.

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// PRIVACY
Privacy·Jul 30, 2025·9 min

Designing a zero-data analytics pipeline for iOS apps

How we measure product health while staying strictly local. Aggregation tricks, differential privacy, and what we deliberately don't measure.

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// STUDIO
Studio·Jul 12, 2025·5 min

Two weeks in Quang Trung Software Park

A photo essay from our annual studio retreat. Coffee, code reviews on the rooftop, and the Vietnamese craft-food tour.

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// GROWTH
Growth·Jun 25, 2025·6 min

From #42 to #1 in Music — what worked for us on ASO

An honest breakdown of the experiments that took our audio editor from page 5 to the top chart in three regional stores.

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