Available for new projects

Hi, I'm Paweł

I've been building mobile applications using React Native since 2018.

Pawel Karniej

About me

Hi, I'm Paweł. My career began in logistics, but in 2018 I decided to change direction, taught myself how to code, and started working as a mobile app developer. At first I freelanced for different companies, which gave me experience across many projects and industries.

Eventually I wanted more than just client work. I began experimenting with my own app ideas, releasing projects like Newsletterytics, a tool for Beehiiv creators, and AIVidly, a mobile AI video generator. Some apps were small niche products, others were bigger bets, but each one taught me something about development, growth, and marketing.

I enjoy the process of turning an idea into a product, finding users, and iterating based on what works. That passion led me to start Silpho, my app studio. Today, I focus on building my own portfolio of apps while also helping others launch their first products and get started in the mobile world.

Currently Working On

Building the next generation of AI-powered mobile applications

Silpho App Studio
App Studio

Silpho App Studio

App studio helping founders launch React Native MVPs in 4 weeks.

React NativeMVPStudio
View Project
Newsletterytics
Mobile App

Newsletterytics

Your Beehiiv newsletter statistics and analytics, on the go.

React NativeAnalyticsAPI Integration
View Project
Coldsmith
Mobile App

Coldsmith

Track your cold exposure sessions and build mental resilience.

React NativeHealthTracking
View Project
TeleprompterX
Mobile App

TeleprompterX

Keep scripts synced with a creator-first teleprompter experience.

iOSProductivityCreators
View Project
MoonLatte
Mobile App

MoonLatte

A minimalist caffeine tracker that stays entirely on-device.

iOSHealthPrivacy
View Project
VidNotes
Mobile App

VidNotes

Private-first video notes to capture ideas without tracking.

iOSNotesPrivacy
View Project
YapperX
Mobile App

YapperX

A lightweight companion for capturing quick thoughts, routines, and prompts wherever I am.

iOSProductivityMinimal
View Project
BeatAI
Mobile App

BeatAI

An AI-native music practice coach that listens, scores timing, and keeps musicians accountable.

React NativeAI/MLMusic
View Project
FIFTN
Mobile App

FIFTN

Focus timer + smart app blocker for deep work sessions. Learn more at FIFTN.app.

iOSProductivityFocus
View Project

Sold Apps

Products I built, successfully handed off, and now continue their journey with new owners.

Aividly: AI Generated Videos
Mobile App
Sold

Aividly: AI Generated Videos

Create short AI videos on your phone using cutting-edge AI models.

React NativeAI/MLVideo Processing
Visit App
Rhava
Mobile App
Sold

Rhava

Rhava evolved into Bibleily: Speak God Bible after the acquisition, helping people build daily scripture habits.

React NativeWellnessAccountability
Visit App

Retired Projects

Products I brought to life, learned from, and have since sunset

Countdown Nuts

Countdown Nuts

Smart management and tracking of your consumable items.

Themegen.xyz

Themegen.xyz

Create and customize dependency-free themes for React Native

The Fitmate App

The Fitmate App

Find your perfect workout partner and stay motivated.

Selfmade.dev

Selfmade.dev

My personal blog about programming and React Native development.

Technical Writing

Sharing knowledge about React Native development and mobile app best practices