Skip to content
العربية
Click to switch light and dark. For options and system mode, hold or press Arrow Down.

I’m Youssef Khalaf

Full Stack App & Web Developer

An independent developer from Egypt, building Android apps since 2020 alongside complete websites and dashboards. I care about interface design and usability, with experience in Google Play publishing and AdMob integration.

Get in touchExplore services
Explore my experience

My development experience

I started with Android apps and expanded into web development and dashboards. I use AI tools where appropriate, reviewing and testing the code before delivery.

Android since 2020

I have worked on my own apps and client projects using Java and Kotlin, developing interfaces and integrating app services.

Websites and dashboards

I have delivered projects connecting the interface, backend and databases, including accounts, permissions and administration within the agreed scope.

Google Play and AdMob

Experience with app preparation, closed testing, publication and policy requirements, and AdMob integration.

Development services.

Android App Development

Android app development with clear interfaces and the functionality your project needs.

  • App interfaces and functionality defined in the project scope
  • Notifications and storage integrations as needed and agreed
  • Source code, project files and operating instructions within our agreement
Service details

Android development with Java and Kotlin, including notifications and storage integrations as needed.

What will you receive?

  • App interfaces and functionality defined in the project scope
  • Notifications and storage integrations as needed and agreed
  • Source code, project files and operating instructions within our agreement

Scope and cost are agreed after understanding your needs.

Request a service →
Request this service

Websites and Dashboards

Websites and dashboards that connect your interface, backend and data for easier project management.

  • The required website pages or dashboard screens
  • Backend, database, account and permission integration within scope
  • Source code, project files and operating instructions as agreed
Service details

Websites and full-stack applications, from the interface to accounts, permissions, and databases.

What will you receive?

  • The required website pages or dashboard screens
  • Backend, database, account and permission integration within scope
  • Source code, project files and operating instructions as agreed

Scope and cost are agreed after understanding your needs.

Request a service →
Request this service

Google AdMob Integration

AdMob setup and integration, with testing and care for the app experience.

  • Ad configuration and integration within the agreed scope
  • Testing of ad-related functionality and behavior
  • Integration review and delivery instructions
Service details

AdMob setup and integration, with testing of advertising functionality within your app.

What will you receive?

  • Ad configuration and integration within the agreed scope
  • Testing of ad-related functionality and behavior
  • Integration review and delivery instructions

Scope and cost are agreed after understanding your needs.

Request a service →
Request this service

Google Play Preparation and Publishing

Help with app preparation, closed testing and reviewing the Google Play publishing process.

  • Review of the app’s preparation and testing needs
  • Help with testing, policy requirements and publishing steps
  • Assistance with publication steps and the production-access request
Service details

Help with app preparation, closed testing, policy review, and production-access requests. Google makes the final approval decision.

What will you receive?

  • Review of the app’s preparation and testing needs
  • Help with testing, policy requirements and publishing steps
  • Assistance with publication steps and the production-access request

Scope and cost are agreed after understanding your needs.

Request a service →
Request this service

Google Play Closed Testing

Help preparing your closed test, reviewing feedback and assessing readiness to apply for production access.

  • App requirement review and closed-track preparation
  • Test feedback review and identification of needed improvements
  • Readiness review and help with the production-access application
Service details

A service dedicated to closed testing in Google Play Console. I review your app and account requirements, then agree on the scope of preparation and follow-up.

Support includes preparing the testing track and release, organizing feedback and reviewing readiness to apply for production access. Tester arrangements, timing and cost are agreed after reviewing your app and Google’s current requirements.

Google makes the final approval decision. This service does not guarantee approval or bypass testing requirements.

What will you receive?

  • App requirement review and closed-track preparation
  • Test feedback review and identification of needed improvements
  • Readiness review and help with the production-access application

How the work progresses

  1. Review the app and account
  2. Define the scope and prepare the test
  3. Review feedback and readiness
Is production access guaranteed?

Google makes the decision. I help prepare the test and review requirements, without guaranteeing approval or replacing genuine testing.

Scope and cost are agreed after understanding your needs.

Request a service →
Request this service

From requirements to delivery.

Understand the idea

We discuss your needs, the people using the product, and the outcome you want.

Agree on scope

We define the features, deliverables, and milestones before development starts.

Build and review

I share progress for review and discuss how changes affect scope and timing.

Test and deliver

I review the code and test functionality, then deliver the agreed files and operating instructions.

  • Direct communication with me in Arabic or English.
  • Attention to interface details and a clear user experience.
  • Agreed scope, deliverables, and milestones before development.
  • Code review and functional testing, with support defined in our agreement.

Technologies & tools.

Java

A tool I have used; selected according to project requirements

  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A technology I have used for Android interfaces.
  • Personal projects and experiments.

React

A tool I have used; selected according to project requirements

  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • A technology I have used for Android UI development.
  • Personal projects and experiments.

MySQL

A tool I have used; selected according to project requirements

  • A tool I have used; selected according to project requirements
  • A tool I have used; selected according to project requirements
  • Professional experience with app advertising
  • One of the platforms I have used for website development.
  • App preparation, testing, and reviewing publication and policy requirements.
  • One of the AI tools I use in development, alongside code review and testing.
  • One of the AI tools I use in development, alongside code review and testing.
  • One of the AI tools I use in development, alongside code review and testing.
  • One of the AI tools I use in development, alongside code review and testing.
  • One of the AI tools I use in development, alongside code review and testing.

Frequently asked questions.

How do we get started?

Send your idea and the functionality you need. We will review scope, deliverables, and milestones to decide on the next step.

Can you develop an existing app or website?

Yes. We start by reviewing its current state, code, and requirements, then agree on feasible changes and scope.

How do you estimate cost and timing?

After understanding the requirements and details. Changes can affect scope and timing, so we discuss them before implementation. There is no single price or delivery time for every project.

Is Google Play approval guaranteed?

Google makes the final decision. I help with preparation, testing, and publication requirements for your app. More than one app I helped obtained production access after its first testing cycle, but this does not guarantee the same outcome in every case.

Do you use AI tools?

I use tools such as ChatGPT, Codex, Gemini, Antigravity, and Claude Code when appropriate, alongside code review and manual or automated testing according to the project.

What is included in delivery and support?

Source code, project files, and operating instructions are included within our agreement. The scope and duration of support are agreed according to the project’s needs.

What happens to my contact form details?

Your details are stored privately in the site’s management system to review and respond to your request. They are not displayed publicly.

Ready to Start Your Project?

App and web development, from interface to database.

Start a ConversationView Services
Available for new projects

Get in touch.

Send your project requirements or contact me directly.

I review your requirements, then get in touch to define the scope, deliverables and milestones before we agree to start.

Additional details (optional)

Your details are used to respond to your project enquiry.

LocationFrom Egypt · Arabic & English
Full Stack App & Web Developer