Portfolio — iOS
Dmitry Sytsevich
iOS developer with 10+ years of experience. Building apps with care — fast, native, and considered down to the last detail.
— WORK
Four apps. Ten years. A lot of Swift.
The projects I keep returning to. Each one taught me something I couldn't have learned anywhere else.
PROJECT / 01
Focusly
A calm, distraction-free timer for deep work sessions.
The app I keep coming back to. A focus timer built entirely in SwiftUI with a Home Screen widget and Live Activity, synced across devices with CloudKit. No streaks to guilt you, no noise — just a quiet space to do the work that matters.
- DOWNLOADS
- 48K+
- RATING
- 4.8
- LAUNCHED
- 2024
- TEAM SIZE
- Solo
- Swift
- SwiftUI
- WidgetKit
- CloudKit
- Live Activities
PROJECT / 02
Ledgerly
Personal finance tracking with a fast, native feel.
My take on money without the clutter. Ledgerly tracks spending across accounts with a snappy UIKit interface, Core Data persistence, and native Swift Charts. Everything is on-device and private — no accounts to link, no data leaving your phone.
- MONTHLY USERS
- 9K
- LAUNCHED
- 2023
- PRIVACY
- On-device
- Swift
- UIKit
- Core Data
- Swift Charts
PROJECT / 03
Trailhead
Offline-first hiking companion with GPX route planning.
Built for the places with no signal. Trailhead caches map tiles for offline use, imports and plans GPX routes, and tracks live elevation with Combine-driven updates. A weekend project that turned into the app I use on every hike.
- DOWNLOADS
- 12K+
- LAUNCHED
- 2022
- WORKS
- Offline
- Swift
- MapKit
- Combine
- R.swift
PROJECT / 04
Notewell
A minimalist markdown notebook that syncs everywhere.
My first bet on The Composable Architecture, and the app that taught me the most. Notewell is a fast markdown editor with CloudKit sync and a testable, predictable state layer. Just you, your notes, and Markdown — nothing in the way.
- MONTHLY USERS
- 800
- LAUNCHED
- 2021
- ARCHITECTURE
- TCA
- Swift
- SwiftUI
- CloudKit
- TCA
About
10+ years
I'm an independent iOS developer who has spent the last decade shipping apps to the App Store — from solo side projects to products used by thousands every month.
I care about the craft: native performance, thoughtful interactions, and interfaces that feel effortless. Most of my work lives at the intersection of clean architecture and calm, purposeful design.
When I'm not writing Swift, I'm usually refining the small details that make an app feel considered.
- Swift
- SwiftUI
- UIKit
- Combine
- Core Data
- CloudKit
- WidgetKit
- MapKit
- The Composable Architecture
- App Store Optimization