I Built an Android App Without Writing a Single Line of Code (Using AI Agents)

Gökhan AYTEKİN — Thu, 05 Mar 2026 13:31:15 +0000

I Built an Android App Without Writing a Single Line of Code

AI tools are changing how we build software.

Recently, I experimented with a different development approach: building
an application using AI agents instead of writing the code myself.

The result was a fully working Android application with a Spring Boot
backend.

The project is called Sub Tracker.

What is Sub Tracker?

Sub Tracker is a mobile application that helps users manage and track
their recurring subscriptions and regular payments.

It allows users to:

track active subscriptions
receive reminders before payment dates
manage recurring expenses
access premium features through in-app purchases

The application is currently in Google Play Closed Testing.

AI-Assisted Development

One of the main goals of this project was to explore AI-driven software
development.

Instead of writing most of the code manually, I used AI agents to
generate and iterate on the implementation.

Tools used in the development process:

Gemini
Claude
Antigravity (agent orchestration)
Google Stitch for UI design

My role was mainly to:

define the problem and requirements
guide the AI agents
review and iterate on the generated code
design the overall architecture

This experience showed me something interesting:

AI is not ending software development. It is changing how developers
work.

Developers are gradually becoming system designers and orchestrators
rather than just people who write code.

Tech Stack

Mobile

Kotlin
Android SDK
Jetpack Compose
Material Design 3

Networking

Retrofit
OkHttp
Kotlin Coroutines
Flow

Dependency Injection

Hilt (Dagger-Hilt)

Monetization

Google Play Billing
AdMob

Backend

Java
Spring Boot
REST API
MongoDB

Architecture

The mobile application follows the MVVM architecture and is inspired by
Clean Architecture principles.

Layers:

UI Layer – Jetpack Compose screens
ViewModel Layer – UI state and logic
Data Layer – Repository and API services

The application communicates with a Spring Boot backend via REST APIs.

Monetization

The application includes two monetization strategies:

AdMob advertisements
In-app purchases using Google Play Billing

Project Repositories

Android Application

https://github.com/gokhanaytekinn/sd-android

Backend

https://github.com/gokhanaytekinn/sd-backend

Current Status

The application is currently in Google Play Closed Testing.

The testing phase focuses on:

application stability
monetization flows
backend performance
user experience

Final Thoughts

This project was an experiment to see how far AI-assisted development
can go.

One thing became very clear to me:

AI is not replacing developers.

Instead, it is transforming the role of developers into something closer
to:

system architects
AI orchestrators
product thinkers

And honestly, this is just the beginning.

DEV Community: Gökhan AYTEKİN

I Built an Android App Without Writing a Single Line of Code (Using AI Agents)