Web · App · AIBuilt the way your business actually needs.

Yangai is a focused build studio. We ship websites, apps and AI workflows that look sharp, run fast and solve a real problem for the team behind them.

Website showcase reel01/05

Core capabilities

Three product layers Yangai ships end to end

Pick one layer or stack all three. Each one is shipped with the same care for clarity, speed and real-world usability inside the team that owns it.

Websites & Landing pages

A digital front door that explains the offer in seconds, earns trust from first-time visitors and routes them straight to the right next step.

App & Mobile products

Web apps, mobile apps and internal tools — built around the way your team actually works, so the people using them stop fighting the interface.

AI & Automation

Chatbots, OpenAI workflows and automation that quietly remove repetitive work, so the team can focus on the part that still needs a human.

Selected works

Recent builds shipped for real teams

Every project starts from the same question: where is this brand really trying to go — and how can the build help them get there faster, sharper and with less friction.

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Rentino

A clearer, more trust-building front-end direction for a finance-related service covering pawn, rental, and phone upgrade flows.

FintechConversion

Educhill

An education web app with AI support, shaped to make daily operations feel smoother and easier to navigate for the team behind it.

Web AppAI Support

Personal Life AI Agent

An orchestration system for tasks, schedules, and finance that demonstrates how multiple flows can be turned into one useful experience.

AutomationOpenAI

Lasante

A premium landing page built around material feel, visual depth, and brand storytelling for a business that needed a stronger atmosphere.

3D LandingBrand Feel

The Story of Yangai

A small studio led by one founder who codes, designs and ships.

Vuong Hoang Giang started Yangai at 20 to build Web, App and AI products that stay close to real business problems. No layers of account managers, no recycled templates — just direct work, shipped clean, with the founder still at the keyboard from start to finish.

2023

Curiosity turned into self-learning and shipping

It started with learning code independently, building small products, and slowly understanding that what gets built should be useful, not only polished.

2024

Real projects clarified what clients actually need

The first client briefs made one thing clear: most teams did not need more effects. They needed someone close enough to turn needs into a product that felt clear and usable.

2025

Yangai took shape as a lean build unit

That is how Yangai keeps taking shape: as a focused unit building Web, App, and AI systems in a way that stays practical and close to each client’s real needs.

How we work

Three steps from brief to launch

A lean process built to keep momentum without skipping the questions that matter. Every step is tied directly to the quality of what finally ships.

Step 01

Lock the goal and visual direction

We start from the business goal, the audience and the brand feeling that needs to come through — so the build has a clear direction from day one.

Step 02

Design while building

Layout, copy, motion and CTA logic are shaped together inside the actual code. What you review is what ships, not a flat mockup.

Step 03

Launch clean and stay close

After launch, Yangai stays around to refine details, handle post-launch feedback and prepare the next iteration when it makes sense.

Proof

What clients say after the build goes live

The feedback is rarely just about aesthetics. It is usually about clarity, ownership and the feeling that the project was handled with real care.

At first I only planned to build a simple site, but Giang asked the right questions and uncovered operational issues I had not even noticed. The final result made the whole business feel easier to run.

The support stood out the most. Even after delivery, urgent edits still got fast responses instead of silence, which is rare and very appreciated.

Our app used to feel messy and bug-prone. After Giang reworked the experience and logic, the team could operate much more smoothly.

The pricing felt fair for the quality delivered. The implementation was careful and structured, without the feeling of features being pushed just to inflate cost.

The chatbot and automation direction removed a lot of repetitive customer questions so the sales team could focus on real conversations.

The project was handled clearly from scope to handoff. The website was fast, clean, and usable immediately without needing major rework.

The support stood out the most. Even after delivery, urgent edits still got fast responses instead of silence, which is rare and very appreciated.

Our app used to feel messy and bug-prone. After Giang reworked the experience and logic, the team could operate much more smoothly.

The pricing felt fair for the quality delivered. The implementation was careful and structured, without the feeling of features being pushed just to inflate cost.

The chatbot and automation direction removed a lot of repetitive customer questions so the sales team could focus on real conversations.

The project was handled clearly from scope to handoff. The website was fast, clean, and usable immediately without needing major rework.