Available for work

4.8★avg rating

Hi, I'm Pankaj

I turn ambitious app ideas into products people keep on their home screen.

A product-minded senior developer with 9+ years across iOS, Flutter, and React Native. I care about the last 10% — the motion, the empty states, the way a list scrolls at 120fps — because that's what makes an app feel trustworthy. Work with me and you get a calm, senior pair of hands from first call to launch day.

iOS · Flutter · React NativeReplies within a dayIndia · works across time zones40+ apps & SDKs shipped

Start a project Book a call

9+years shipping

40+apps & SDKs launched

12M+app installs

4.8★avg. store rating

Selected work

Apps & SDKs I've shipped

A mix of cross-platform apps, native iOS work, and developer SDKs — across productivity, kids, health, IoT, and AI.

9:41●●● ▮

Today

Tuesday · 4 of 7 done

Submit App Store build

Dailoz

A calm productivity app with offline-first sync, natural-language capture, and a focus timer. 4.8★ across stores.

iOS · Android4.8★ · 120k installs

ProductivityOffline-first

9:41●●● ▮

For Maya

▶12:04 left

Screen time

Approved only24 min left

BrightTube Jr

A curated, parent-controlled video experience with screen-time limits, content allow-lists, and a playful, accessible UI.

iOS · AndroidEditor's pick

KidsStreaming

Phyllo.swift

import PhylloSDK

// connect a creator account
let phyllo = Phyllo(token)
phyllo.connect(host: .native) { result in
  switch result {
  case .success(let id):
    log("linked \(id)")
  case .failure(let e):
    handle(e)
  }
}

● connected · 184ms

Phyllo SDK Integration

Embedded the Phyllo identity & income-data SDK across native iOS and Android hosts, with a typed React Native bridge and connect-flow UI.

SDK · iOS · AndroidSub-200ms connect

98%batt

v2.4fw

OTA update available ›

PulseLink BLE

Bluetooth Low Energy companion app for a wearable sensor: pairing, OTA firmware updates, live telemetry charts, and background sync.

iOS · AndroidOTA + live telemetry

IoTBLE

9:41●●● ▮

Lumi

How do I structure offline sync?

Use a local write-ahead log and idempotent merges on the server. Want a code sketch?

Yes please ✦

Ask anything…🎙

Lumi AI

A streaming AI chat app with voice input, tool-calling, and on-device summarization. Built a token-streaming UI with graceful fallbacks.

iOS · AndroidStreaming + voice

AIChat

See all projects

Services

What I can build for you

End-to-end product development, or a focused engagement on the part you're stuck on.

iOS app development

Swift & SwiftUI apps that feel native to the platform — from concept to App Store.

Flutter app development

One codebase, both stores. Pixel-perfect Flutter apps with smooth 60fps motion.

React Native / Expo

Cross-platform apps with native modules, OTA updates, and a fast dev loop.

Backend integration

APIs, auth, realtime sync, and database design — wired cleanly into the app.

AI app development

LLM features, streaming chat, voice, and on-device inference done tastefully.

SDK development

Versioned, documented native & cross-platform SDKs with great DX.

Store launch support

App Store & Play Store submission, ASO, review fixes, and release pipelines.

Performance & polish

Profiling, animation tuning, and the last 10% that makes an app feel premium.

How I work

From idea to App Store

A simple, visible process. You always know what's happening, what's next, and what it costs — no black boxes.

Discover

We map the goal, users, and constraints. I audit any existing code, pin down scope, and give you an honest estimate — no surprises later.

Design

Flows, states, and the tricky edges get designed first. We agree on the look and the architecture before a line of feature code is written.

Build

Short, visible iterations. You get a running build every week, not a black box — so feedback lands while it's cheap to act on.

Harden

Performance passes, accessibility, crash and analytics wiring, automated builds. The last 10% that separates a demo from a product.

Ship & iterate

App Store / Play Store submission, release pipeline, and a post-launch loop to watch the numbers and tune what matters.

App Rescue

Slow, crashing, or stuck app? I'll rescue it.

Inherited a slow, crashing, or abandoned app? I take struggling codebases — jank, memory leaks, one-star reviews, rejected builds — and get them healthy, fast, and shippable again.

Performance auditProfile startup, scroll jank, and frame drops; fix the real bottlenecks, not guesses.

Crash triageWire up crash reporting, reproduce the top crashers, and drive crash-free sessions up.

Architecture cleanupUntangle state, kill dead code, and make the app safe to change again.

Bundle & memoryShrink app size and binary, plug memory leaks, and tame battery drain.

Store unblockingResolve rejections, privacy/labels issues, and get the build approved.

CI & releaseStabilize flaky builds and set up a one-tap, repeatable release pipeline.

Get a rescue audit See a turnaround

Typical turnaround · before → after

Cold start4.2s→1.1s

Crash-free users91.2%→99.6%

Avg. frame rate38fps→60fps

App Store rating3.4★→4.7★

Tech stack

Tools I reach for

Mobile

Swift
SwiftUI
Kotlin
Flutter
React Native
Expo

AI

OpenAI
Anthropic
Whisper
On-device ML
Vector DB

Backend

Node.js
TypeScript
Supabase
Firebase
PostgreSQL

Platform

BLE / IoT
HealthKit
Fastlane
GitHub Actions
Sentry

SwiftSwiftUIKotlinFlutterReact NativeExpoOpenAIAnthropicWhisperOn-device MLVector DBNode.jsTypeScriptSupabaseFirebasePostgreSQLBLE / IoTHealthKitFastlaneGitHub ActionsSentrySwiftSwiftUIKotlinFlutterReact NativeExpoOpenAIAnthropicWhisperOn-device MLVector DBNode.jsTypeScriptSupabaseFirebasePostgreSQLBLE / IoTHealthKitFastlaneGitHub ActionsSentry

Consistency

Always shipping

A year of commits, releases, and review fixes. I work in steady, dependable increments — not heroics — so projects land on time and stay healthy.

LessMore

Case studies

A closer look

How a few of these projects came together — the problem, the build, and the numbers.

9:41●●● ▮

Today

Tuesday · 4 of 7 done

Submit App Store build

Dailoz · 2024 · Lead mobile engineer

Rebuilding a tasks app for offline-first calm

How we cut sync conflicts to near-zero and lifted the store rating from 3.9 to 4.8.

import PhylloSDK

// connect a creator account
let phyllo = Phyllo(token)
phyllo.connect(host: .native) { result in
  switch result {
  case .success(let id):
    log("linked \(id)")
  case .failure(let e):
    handle(e)
  }
}