Full-Stack & iOS Developer · Malaysia

Building software
people love to use.

I build web products with Next.js and TypeScript, and ship iOS apps in Swift. I have co-founded three companies and reached 15M+ downloads on the App Store.

Product-minded engineer focused on consumer apps, web products, and startup execution
Read my blog GitHub YouTube LinkedIn Twitter / X
15M+
App Downloads
15+
iOS Apps
3
Companies Co-founded
Mahmud Ahsan
15M+ downloads Across consumer iOS apps

Work

What I've been building

A few things that reflect how I work: build end to end, ship consistently, and stay close to users.

Current · Co-Founder

CheckWhatsgood

Built the platform from the ground up and lead engineering across product, backend, and frontend.

checkwhatsgood.com →
Next.js TypeScript Prisma PostgreSQL
Current · Founder

iOS Apps

I actively build, maintain, and improve iOS apps across productivity, language tools, and casual games.

Browse apps →
Swift App Store Consumer Apps
Writing

Technical Writing

I write practical articles on app development, web scraping, release workflows, and lessons from shipping software.

Read on thinkdiff.net →
Python iOS Web Dev
Other Projects

Uno Game Play

A web app for managing Uno sessions, scores, player order, and round flow.

→

iOS Apps

Apps on the App Store

A mix of language tools, productivity apps, and casual games shipped independently over the years.

Onedic
Onedic
Dictionary · Translator
 Word Search
Word Search
Puzzle Game
 Bangla Notes
Bangla Notes
Productivity
 Hangman
Hangman
Word Game
 Math Puzzle
Math Puzzle
Puzzle Game
 Find Da Pair
Find Da Pair
Memory Game
 Sudoku
Sudoku
Puzzle Game
 Njump
Njump
Arcade Game
Browse full app portfolio at ithinkdiff.net →

Writing

Technical articles

Notes from years of building apps, scraping data, shipping mobile releases, and debugging the messy parts.

01
How to Scrape Data From JavaScript-Based Websites Using Python, Selenium & Headless Chrome
thinkdiff.net · Python · Selenium
→ 02
How to Reverse Engineer an Android App
thinkdiff.net · Android
→ 03
iOS — How to Take Advantage of Multiple Schemes in Xcode
thinkdiff.net · iOS · Xcode
→ 04
How to Use Fastlane to Deploy iOS Apps Fast
thinkdiff.net · iOS · Fastlane
→ 05
How to Upload Files: Firebase Functions to Storage
thinkdiff.net · Firebase · Cloud
→ 06
How to Use Provider to Manage State in Flutter
thinkdiff.net · Flutter · Dart
→
All articles on thinkdiff.net →

Press

Featured in

A few places where my work and products have been covered.

Google AdMob
Indie developer growing a business with Google AdMob
Wilmington Biz Magazine
Young Startups: Get To The Good Stuff
Grepbeat
Check What's Good connects users to local business content