macOS
Utility
MellowConvert
Fast, private batch conversion for images and PDFs — entirely on your Mac.
Independent app studio · Seoul
Small apps.
Thoughtfully made.
Nicechann Studio creates focused utilities, calm games, and everyday tools for Apple platforms.
Selected work
Apps & games
macOS
Utility
MellowCat
A lightweight system monitor with a responsive desktop cat companion.
iPhone
Photo
MellowSnap
Preset camera and photo editing for soft, natural everyday moments.
iPhone · iPad
Puzzle
MellowLines 2
Fill every cell with one continuous line across 1,000 handcrafted levels.
Apple platforms
Journal
NoteGarden
A gentle daily journal for capturing mood, photos, notes, and memories.
macOS
Productivity
StashDeck
Save, search, organize, and reuse clipboard text, links, images, files, and code.
iPhone · iPad · Mac
Productivity
PinDeck
Fast card-based notes with Quick Capture, widgets, tags, history, and iCloud sync.
Puzzle
Nonogram
Mellow Isle
A calm nonogram where every solved picture restores a pixel-art island.
Puzzle
Game
SudokuBurst
A strategic block puzzle on a Sudoku board with multiple challenge modes.
Puzzle
Brain training
NumberOrder
Read the rule and tap numbers in the correct order — simple, fast, focused.
iPhone · iPad · Mac
Productivity
MellowTask
Organize tasks by urgency and importance across your Apple devices.
iPhone
Diagnostics
StatusLab
See device status, run guided hardware checks, and keep recent results nearby.
Studio tool
App Assets
Resize App Store screenshots, app icons, Toss assets, and custom images directly in the browser. No upload required.
Open App AssetsAbout
Designed and built with focus.
Nicechann Studio is an independent software studio creating small, useful products for everyday life. Each project starts with a clear problem and aims to keep the experience simple.