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SPALGIN
EN/TR
INDEPENDENT SOFTWARE DEVELOPMENTFEVZİ EMRE KARAHAN

From idea
to project.
Start to finish.

Let’s work together

SPALGIN

KEEP EXPLORINGWEB / MOBILE / SYSTEMS

From the design
to the last line.

I build websites, mobile apps and software for your business.

I handle design, development and deployment. We can start a new project or build on a product you already have.

Tell me what you have in mind
01

Websites

I build company websites, portfolios and online stores, including page design, content structure, mobile layouts and deployment.

WEB / E-COMMERCE / INTERACTIVE
02

Mobile applications

I develop iOS and Android apps, including screen design, user accounts, backend connections, testing and app store preparation.

iOS / ANDROID / FLUTTER
03

Custom software

I build management dashboards, membership systems and tools for specific business tasks. I can connect them to existing software through APIs.

DASHBOARDS / API / SYSTEMS
04

Automation

I automate recurring tasks such as file processing, data transfers and content publishing, and build tools that connect the services you use.

WORKFLOWS / DATA / INTEGRATIONS

Projects in practice.

Dilci and Netle, SpiritPal, MindRooms. Each project page covers the features, screenshots and how the app was built.

And there’s more.

Mobile apps, games, client websites and automation tools.

01

Sıla Saraç

A website for dietitian Sıla Saraç. Visitors can browse her consultation services, read answers to common questions and find her contact details.

Web · ConsultingNext.js / React / Sanity / TypeScript
02

Yucas Gayrimenkul

A company website for Yucas Gayrimenkul, with information about property sales, rentals and investment services, plus contact details.

Web · Real estateNext.js / React / Responsive web
03

Mesai

A time and earnings tracker for freelancers. It records time spent on each project and calculates earnings from an hourly rate, with support for multiple currencies.

Mobile · Time trackingFlutter / Dart / SQLite / PDF
04

Piksel Cep

A pixel art drawing app for your phone. Draw with custom colour palettes, save your work in a gallery and export it as PNG images or sprites.

Mobile · Drawing toolFlutter / CustomPainter / SQLite / PNG
05

Cep Tarayıcı

An app for scanning paper documents with your phone and saving them as PDFs. Edit scanned pages and combine them into a single document.

Mobile · Document scanningFlutter / Swift / VisionKit / PDFKit
06

Bavul Hazır

A packing list app for travel. Create separate lists for each trip and traveller, check off packed items and set reminders. It also works offline.

Mobile · Travel planningFlutter / SQLite / Local notifications
07

Vurgu

A metronome for music practice. Set the tempo manually or tap it on the screen, then adjust the time signature and accents. No internet connection needed.

Mobile · MusicFlutter / Swift / AVAudioEngine
08

Renk Masası

A tool for creating and saving colour palettes. View HEX, RGB and HSL values, check text-to-background contrast and export palettes as PNG, CSS or JSON.

Mobile · Design toolFlutter / SQLite / WCAG / JSON / CSS
09

Number Flow

A puzzle about merging matching numbers on a 5×5 board to reach new tiles. Undo a move or earn space-clearing charges through merges. Your game and records stay on your device.

Mobile game · Number puzzleFlutter / Dart / SQLite
10

Orbit Links

Place coloured pieces around a ring and clear groups of three or more matching neighbours. Preview the next colour to plan your move and build consecutive matches for a higher score. Works offline.

Mobile game · Colour puzzleFlutter / CustomPainter / SQLite
11

Box Trail

A logic puzzle about pushing boxes onto marked goals. Get a hint, undo a wrong move or replay a level to improve your move count. Progress stays on your device.

Mobile game · Logic puzzleFlutter / Dart / SQLite
12

Mirror Light

Rotate mirrors to guide a beam toward its target. Follow the light, ask for a hint and try to solve each room with fewer turns. No internet connection needed.

Mobile game · Light puzzleFlutter / CustomPainter / SQLite
13

Video Pipeline

An automation tool for assembling short videos, timing subtitles and managing the upload queue. It uses FFmpeg for video processing, Whisper for transcription and the YouTube API for uploads.

Automation · MediaNode.js / FFmpeg / Whisper / YouTube API

No layers between us.
We work directly.

01

First, the problem.

We discuss what you need and who will use it. I prepare a proposal based on the features, timeline and budget.

02

Then, the system.

I prepare the screens and navigation. You review the designs and we discuss changes before development.

03

Build, in steps.

I share completed sections for you to try during development and make adjustments based on your feedback.

04

Into the real world.

I test the main features and screen sizes, fix issues and deploy the project. I also provide the information needed to use and maintain it.

Clear scope. Open communication. A proposal for your project.