Nick Popov

Senior React Native & full stack engineer. I build mobile apps end to end — and these are the ones I make on my own.

Product · live on the App Store and Google Play

Sideseen

Widgets for your own data.

Any value you can serve as JSON — AI subscription limits, server status, the temperature in your room — shows up in the app and in native home and lock screen widgets. An AI agent does the setup: it prepares a private source and hands over one setup link. No accounts and no backend: the phone reads the source directly over HTTPS, access keys stay in the Keychain / Android Keystore.

Download on theApp StoreGet it onGoogle Playsideseen.app →
Sideseen widgets on the iPhone Home ScreenSideseen widgets on the Lock ScreenSideseen values screen with rings, bars and chartsSideseen widget setup screen

Open source

bkey

Swift / SwiftUI · macOS

Native macOS touch-typing tutor: 45 structured lessons, per-key proficiency tracking that feeds your weakest keys back into practice, live keyboard, themes. Zero dependencies, SwiftData persistence, CI on GitHub Actions.

bkey lesson drill with live keyboardbkey per-key progress heatmap

sai

SwiftUI · Apollo GraphQL · FastAPI · PostgreSQL

Dog walking & pet care app, full stack: native iOS client with live GPS walk tracking and a transparent sheet UI whose header animates with the sheet position; GraphQL backend on FastAPI + Strawberry with Firebase auth and push jobs. Also rebuilt as a Kotlin Multiplatform prototype.

iOSBackendKMM

sai home screen with activity sheetsai home screen, sheet expanded

opdsreader

SwiftUI · Combine · Readium

Lightweight OPDS ebook catalog client: debounced search for books and authors, paginated lists with covers, recursive author shelves, download-link selection by media type (EPUB / FB2 / DjVu). Rebuilt on Kotlin Multiplatform with a Jetpack Compose UI.

iOSKMM

opdsreader book search resultsopdsreader book details

rn_jsi_gallery

React Native · Reanimated · Gesture Handler

React Native UI, animation and gesture showcase: a Wonderous-style timeline and a Craft-style calendar on Reanimated worklets. Videos in the README.

telegram-bot-music

Python · yt-dlp · ffmpeg · Docker

Allowlisted Telegram bot that turns a YouTube link into a player-safe 320 kbps MP3, validated with ffprobe; health-checked Docker image.

wattpad-translate

Swift · ML Kit · SwiftSoup

Wattpad chapters translated on-device with ML Kit; SwiftSoup scraper and a Share Extension via App Group.

MLKitReactNativeDemo

React Native · native iOS module

Offline translator: Google ML Kit in React Native through a native iOS module.