So, You Got An Idea,
What Are We Building?
Get your custom app development on Base44 with a Official Base44 Partner | Top 10 Contender of the Builders World: Take 2
About Me
I'm Hanyu, a Verified Base44 Partner and App Developer based in Sydney. I build custom apps for businesses and individuals. From travel platforms to SaaS tools and websites as I'm constantly levelling up with each project.
Placed Top 10 at The Builders World 'Build Your App in 60 Minutes' competition. Building on Base44 for over a year. First client landed through the Base44 Partner Program in 2026.
"2025 was experimenting. 2026 is execution."
Pitching SetList at The Builders World — Top 10, Sydney
Renee Dvir
Customer Success Leader | Bringing together people,...
And great idea for the app Hanyu Xu! Presented like a pro
What I Do
Custom App Development
Full-stack web apps built on Base44, fast, clean, and production-ready. From idea to launch.
API & Integrations
Connect your app to payment systems, third-party APIs, CRMs, and data sources seamlessly.
MVP Builds
Turn your idea into a working product quickly. Focused on the core features that matter most.
What I've Built
PassagePoint
Travel booking platform with Hotelbeds API integration
API Integration
SetList
QR-based song request & tips tool for street musicians
App Development
Serenade
A luxury song request system for hotel pianists allowing guests to browse songs.
SaaS Tool
HomeTech RGV
Field service management app for a home services client
Client Project
Dosely
Your personal cannabis journal to track symptom relief and treatment effectiveness.
App Development
ATM Stokvel
Automatic Stokvel record-keeping with a streamlined 2-level matrix system.
App Developmentand more...
What People Say
"I found Hanyu out online when I was out looking for a partner to help with my app. I had the idea but I didn't really know how to put it together. He replied almost immediately, he was fast, friendly and efficient and most of all he was patient. My app is done and working. I'm very happy and I highly recommend him."
Anonymous Client
via Base44 Partner Program
"My friend Hanyu who I have been mentoring for over 6 months just made the top 10 in The Builders World event. I am super proud of him as he is constantly improving."
Itai Shai
Internal App Builder @ Base44
"You are the best! Well done for making it to the top 10."
Doron Bahar
AI Product Manager @ Eftsure
"I came to Hanyu with a half-formed idea and zero technical background. He never made me feel rushed or out of my depth, he walked me through every decision patiently and turned my concept into a real, working app faster than I thought possible. I genuinely couldn't have done this without him."
Anonymous Client
via Base44 Partner Program
"I'm not the most organised person and I know I asked Hanyu to redo things more than once. He took it all in, no frustration or shortcuts. The final app was exactly or maybe better than what I'd been picturing in my head."
Anonymous Client
via Base44 Partner Program
and more...
Discovery to ship. Four steps.
Same process for every service. The depth and timeline scale with the project.
Discovery
Map the problem. Define what success looks like. Scope the work.
1-2 daysDesign
Wireframes, design system, signature elements. We agree the look before any code ships.
2-7 daysBuild
Section by section. Daily updates. You see progress as it happens, not at the end.
VariesShip
Deploy, QA, hand off. Clean launch, ready for users.
1-3 daysMilestones worth noting.
A track record built on shipping, competing, and partnering.
75+ Apps Built
Production apps shipped across client and personal projects.
Top 0.007% of Base44 Global Users
Among the most active builders on the platform worldwide.
Top 10 @ Builders World
Ranked top 10 in the Builders World competition.
First 300,000 User of Base44
Early adopter of the Base44 platform.
#1 Oceania Base44 Partner
11 March 2026 - Current. Leading Base44 partner in the Oceania region.
Let's Build Something.
Have a project in mind? Fill in the form and I'll get back to you.
Common questions.
For projects higher than $300 I would normally do 50% on signing, 50% on delivery for bespoke work and for projects under $300 I normally charge a $40-$100 deposit. Templates are paid in full upfront. Audits are paid on delivery.
You do. You have full ownership over your Base44 project, the design system and all assets. You keep everything.
Yes. I'm purely a Base44 builder. If your project genuinely needs a different stack, I'll let you know upfront.
Templates ship within 5 days. Audits often start within 48 hours. Larger Base44 builds depend on size of project but normally can start within 1-2 days.
Ongoing work is charged by a Day Rate or an Hourly Rate depending on the project. For larger continuous iterations you can put me on a retainer.