Web & mobile app development

Web and mobile apps, designed and built end to end with AI

A boutique studio led by a designer with 25 years of experience. AI does the heavy lifting in code; a human reviews every screen and every line.

Web apps, mobile apps, admin panels, MVPs. Based in Indonesia, working with clients worldwide.

Production liveHuman-reviewed & verified
Operations & Digital Platform
Deployed
ARR growth
$48.2k
+18.4% this month
Active users
2,840
3 global hubs
Reliability
99.98%
Zero downtime
Shipped modulesNext.js & Supabase
Web Application DashboardProduction live
Mobile App (Kotlin / Flutter)Mobile release
Every screen & line reviewed by a human

What I build

From initial concept to production release, built with AI velocity and human craft.

Web apps

Full-stack web applications with responsive interfaces, database integration, and authenticated accounts.

Mobile apps

Cross-platform iOS and Android apps with native device capabilities, clean navigation, and offline support.

Admin panels & internal tools

Operational dashboards and automated portals to manage business data, user records, and daily workflows.

MVPs for startups

Working production software launched in weeks so you can test real market demand with real users.

How it works

AI drafts. I decide. I verify.

AI writes the boilerplate, tests, and first-pass UI.
I decide architecture, UX, and every design trade-off.
I review and test every release before it reaches you.

Workflow comparison

Conventional workflowTypically 12 to 16 weeks
Requir…
Design
Handoff
Develo…
QA
Launch
Requirements
Design
Handoff
Development
QA
Launch
The Provoactive workflow
Typically 4 to 8 weeks
Brief
AI build
Review
Reviewed by a human
Launch
4 to 8 weeks
Brief
AI-assisted design and build
In parallel
Human review
Launch

Timelines vary by scope.

1

Discover

I align on your product goals, core user requirements, and technical scope in plain language.

2

Design

I design every key screen before touching production code.

3

Build

I engineer the application using AI for rapid implementation, while hand-refining all code and logic.

4

Launch

I test, deploy directly to your infrastructure, and hand over complete repository access.

Stack
Tools
Figma· Design and prototypingOpenCode· AI coding agentDeepSeek V4.1 Flash· AI model for coding
Mobile
React NativeFlutterKotlin
Web & backend
Next.jsLaravelNode.jsTailwind CSS
Data
MySQLSupabasePostgreSQL

Designed and reviewed by a human. Accelerated with AI.

Selected work

A snapshot of recent digital products engineered end-to-end with human care and AI velocity.

BM1 Motor Oil website homepage and product sections
Website

BM1 Motor Oil Website

Product marketing site for a motor oil brand with catalog, specs, and distributor contact flows.

Produce dropshipper mobile app screens
Mobile app

Dropshipper App for Produce

Ordering and fulfillment app connecting produce dropshippers with suppliers, stock, and deliveries.

Spendaily expense tracking mobile app screens
Mobile app

Spendaily App

Personal expense tracker with daily budgets, category insights, and spending reports.

Grocery e-commerce storefront and checkout screens
E-commerce

E-commerce for Groceries

Online grocery storefront with cart, delivery slots, and a checkout built for repeat ordering.

Uplifting quotes mobile app screens
Mobile app

Uplifting Quotes App

Daily inspirational quotes app with curated collections, favorites, and shareable cards.

Soyuzno, Founder & Principal Designer
SoyuznoFounder & Principal Designer
25 years of hands-on experience in product and digital design
Worked across Jakarta, Tokyo, and Singapore
Now based in Surabaya, Indonesia, working with clients worldwide

Led by 25 years of design experience

I'm Soyuzno, a UI/UX designer with 25 years of experience across Jakarta, Tokyo and Singapore, now based in Surabaya. I founded Provoactive to bridge senior design mastery with modern AI speed, eliminating agency bloat and slow iteration cycles. Provoactive is small by design: you work directly with the person designing and building your product. I lead every project personally, use AI to build faster, and review the result myself before it reaches you. For larger builds, I bring in trusted developers I have worked with for years, under the same standards and the same NDA.

Pricing

Two ways to work together. Final price depends on scope.

Project

Fixed scope
From $1200

Typical duration 4 to 8 weeks for a defined outcome.

End-to-end product design and technical architecture
Full-stack web or mobile app development with tests
Deployment to your cloud host and repository transfer
30 days post-launch warranty and bug fixes

Larger scopes may include additional vetted developers, quoted upfront.

Ongoing

Monthly retainer
From $499 per month

Flexible monthly collaboration for continuous feature delivery.

Dedicated weekly design and development sprint capacity
Continuous product iterations, features, and refactoring
Direct communication and weekly progress checkpoints
Human code reviews and architectural oversight on every release

Final price depends on scope. Every project starts with a free call. All prices in USD.

Frequently asked questions

Clear, honest answers about working with Provoactive.

You do. You retain 100% ownership of all intellectual property, design source files, and source code repositories from day one. Everything is deployed directly to your accounts and infrastructure.

I lead every project personally: I design it, direct the AI, and review everything that ships. For larger scopes I add vetted developers I have worked with before. You will know who is involved, and what they will do, before we start.

It sometimes does, which is why nothing ships unreviewed. AI writes the first draft; I review the architecture, the code and the behavior, and test every release before it reaches you. You get working software and a person who is accountable for it.

I follow standard industry security protocols: isolated environment variables, zero API keys exposed to the client, encrypted credentials, sanitized database queries, and secure role-based access controls.

Yes, before we discuss anything sensitive. Anyone I bring onto your project signs the same NDA and works under the same standards.

For fixed-scope projects, payments are typically split into milestones (e.g. 50% deposit to commence work, 50% upon final acceptance and handover). For monthly retainers, invoices are billed monthly in advance.

Choose Project when you have a defined scope and timeline, such as building a new MVP or launching a specific mobile app. Choose Ongoing when your product is already in the market and you need steady design and development velocity month after month.

You receive production-grade code pushed to your private Git repository, comprehensive design files, fully deployed web or mobile builds, database schemas, and clear technical documentation.

Yes. The Ongoing retainer can be paused or cancelled at any time with 14 days written notice. There are no long-term lock-in contracts.

When I use AI to write code, the relevant parts of your project are sent to an AI model through a model gateway, which routes the request to a model provider. I do not send credentials, API keys or production data: secrets are set by me manually in environment files, and the AI only tells me where they belong, and my tools are configured not to read them. If your company policy requires a specific model or provider, I can switch, which may adjust the price. Tell me your requirements before we start, and I will confirm in writing which tools and providers touch your code.

Have a product in mind? Let’s talk

Tell me what you want to build. I'll discuss scope, feasibility, and how to bring it to life faster.

Send a direct message

Tell me what you want to build. I'll reply within 24 hours.

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