Software developer · United Kingdom

PujanChapagain I build useful software for real people — web, Android, AI and real-time products.

My portfolio is built around working ideas, not decorative case studies. From team operations and diagnostics to expiry tracking, flood awareness and AI assistants, each product starts with a real problem and gets refined through hands-on testing.

Explore projects ↓Start a conversation ↗
10featured products
Web + Androidmulti-platform builds
AI + realtimepractical product focus
pujan.dev
const developer = {
  name: "Pujan Chapagain",
  focus: ["Android", "Web", "AI"],
  style: "build → test → improve",
  goal: "make useful things"
};
// shipping practical software
Currently building and improving real products
REAL-TIMETeam systems
MOBILEAndroid apps
INTELLIGENCEAI workflows
01 / SELECTED WORK
Flagship projects

Every app gets its own identity.

Ten products, each presented around the experience it is designed to create. Hover, scroll and explore — the motion is part of the story, not decoration for decoration’s sake.

FEATURED · WEB TOOL · ANDROID DIAGNOSTICS

APKDoctor

Free browser-based static analysis

Upload an APK or Android project ZIP to inspect common issues before releasing your app. APKDoctor reviews package structure, Android manifests, permissions, native libraries, Gradle configuration, possible secrets and release blockers. Checks run in your browser — your file stays on your device. Runtime installation and crash testing are not part of this browser scan.

01 APK & ZIP inspection
02 Manifest & permissions
03 Security & exposed secrets
04 Gradle & release checks
Open APKDoctor ↗
BROWSER-BASED
Actual APKDoctor website screenshot provided by the project owner
APK · PROJECT ZIP
10 · GAMING · NEPALI CARD CLUB

Tass House

Playable multiplayer web games

Bring your friends together for three familiar Nepali card games: 21-card Marriage with Tiplu and Maal, Jutpatti with matching pairs and jokers, and Call Break with bidding and spade trumps. Create a private room, share a six-character code and play on mobile or desktop.

01 Marriage · 21 cards
02 Jutpatti · pairs & jokers
03 Call Break · tricks & bids
04 Private multiplayer rooms
Play Tass House ↗
♛ TASS HOUSEACTUAL WEBSITE PREVIEW
CREAM & GOLD · MARRIAGE · JUTPATTI · CALL BREAK
01 · Team operations

Team Tracker

Interactive web build

A live operations workspace for busy teams: active staff, assigned tasks, completion status and location context in one control-room view instead of scattered updates.

01Live shift status
02Task flow
03Map context
04Role-based views
Open web app ↗Discuss project
CONTROL ROOM · LIVE
Online24 staff
Tasks08 active
Completed91%
Area check · Zone CASSIGNED
Support request · Level 1ACK
Routine inspectionDONE
02 · Diagnostics

FixCheck

In development

A no-nonsense diagnostic utility designed for the moment something stops working. It turns browser-visible network signals into a plain-language answer and a concrete next step.

01No login wall
02Network signals
03Plain explanations
04Actionable next step
Open web app ↗
FIXCHECK · DIAGNOSTIC ENGINE
Likely issueTarget service response
Internet connectionPASS
DNS resolverPASS
Target endpointCHECKING
03 · Android · Expiry tracking

DateMate

Android build

A smart expiry companion for groceries and household items. The core idea is simple: add items quickly, understand what needs attention first and get reminders before useful products become waste.

01Smart scan flow
02Expiry reminders
03Freshness dashboard
04Archive & restore
View real screens ↓
DateMate Android home dashboard
EXPIRING SOONMilk · 2 days
SMART SCANItem detected
REMINDERBefore it is too late
04 · Public safety · Nepal

FloodSafe Nepal

Active build

A Nepal-first flood awareness product built around local relevance: nearby river stations, visible data freshness, weather context, warning states and a map that prioritises the place the user actually cares about.

01River stations
02Local risk context
03Rain & weather
04Location-aware alerts
Open latest web app ↗View screens ↓
Nearby stationLatest river level
4.28 m
Local contextFresh reading · Area aware
Station feedLIVE
Rain contextSYNCED
05 · Personal AI · Finance

LifeOS AI

Complete web build

A personal organisation workspace that reduces day-to-day admin. Its finance area brings bills, payment activity and Gmail-assisted signals into one structured dashboard instead of spreading them across notes, inboxes and spreadsheets.

01Finance overview
02Upcoming bills
03Gmail-assisted capture
04Activity history
Project enquiry ↗
LifeOS
Upcoming billsOrganised
PaidUpdated
Inbox signalsStructured
ActivityClear history
06 · AI assistant · Android

Sathi AI

Active prototype

A Nepali-first personal AI assistant for Android with voice interaction, background-assistant ambitions and an education experience for Nepal Classes 8–12. The goal is fast, natural help without making the interface feel complicated.

01Nepali voice
02Roman Nepali input
03Education assistant
04Photo / text questions
Discuss Sathi AI ↗
VOICENepali-first
STUDYClasses 8–12
INPUTVoice · Text · Photo
02 / HOW I BUILD
Working method

Problem first. Polish after proof.

The visual finish matters, but only after the workflow makes sense. I build in short loops: understand the problem, ship something usable, test the weak points, then refine.

01 / DEFINE

Find the real friction

Start with the frustrating moment the user actually experiences, not a feature wishlist.

02 / BUILD

Make a working version

Get the flow into a usable product quickly enough to learn what is wrong.

03 / TEST

Break the weak points

Use real devices, awkward states and edge cases instead of testing only the happy path.

04 / REFINE

Make it feel obvious

Remove unnecessary steps, improve feedback and make the useful action easier to reach.

03 / ABOUT
The developer

Hands-on from idea to test.

I like software that makes a real task feel simpler.

Pujan Chapagain is an independent software developer from Jhapa, Nepal. He studied Computer Science at Hrit Academy and completed a Bachelor's degree in Computer Science at the University of Wolverhampton.

PJBUILTS is his personal developer brand and portfolio. He independently builds, tests and maintains web, Android, AI and real-time software products, including FloodSafe Nepal.

AndroidWeb appsRealtimeSupabaseAI workflowsUI/UXTesting
AVAILABLE FOR SOFTWARE & PRODUCT CONVERSATIONS

Have something useful to build?

For software, prototypes, product collaboration or project enquiries.

pujanchapagain.software@gmail.com ↗
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