Dev Jang

How this developer operates

• Carrier title StudyK: Learn Korean Daily holds 42% of the developer's installs
• Hit rate 0% of launches reach 100k installs (0 of 70 at least 30 days old)
• Release rhythm a new app every ~37 days on average
• Maintenance 8 of 72 apps updated in the last 90 days · last update 20 days ago

Same company, other accounts · 장재우

Developer names that share this developer's legal name, contact e-mail or website in the store.

All apps

App	Style	Rating	Installs	Released
StudyK: Learn Korean Daily	Education	★ 3.1	10,000+	Oct 4, 2019
Double Tap Screen Lock	Tools	—	10,000+	Feb 5, 2026
Battery Saver & App Sleep	Tools	—	10,000+	Apr 26, 2026
Screen Rotation Control	Tools	—	1,000+	Feb 8, 2026
Stock Count Quick	Business	—	100+	Jun 18, 2026
Reflex Rush: Reaction Speed	Tools	—	100+	Jan 15, 2024
Battery Charge Alarm	Tools	—	100+	May 30, 2026
ClipVault: Clipboard Notes	Tools	—	50+	Feb 20, 2026
App Blocker: Focus Timer	Productivity	—	50+	May 15, 2026
FolderPlay: Music by Folder	Productivity	—	50+	Dec 28, 2025
Permio: Permission Review	Tools	—	50+	Feb 14, 2026
AC BTU Calculator	Tools	—	50+	Jun 22, 2026
Rainbow Spiral Toy	Entertainment	—	50+	May 15, 2026
Sleepy: White Noise & Sleep	Music & Audio	—	10+	Nov 18, 2024
Picture Frame Calculator	Tools	—	10+	Jun 21, 2026
Flash - Minimal Flashlight	Tools	—	10+	Jan 7, 2026
Random Number Quick	Tools	—	10+	Jun 18, 2026
Tally Counter Quick	Tools	—	10+	Jun 18, 2026
TakeLedger: Shot List	Productivity	—	10+	Aug 3, 2026
RewindNote: Offline Notepad	Productivity	—	10+	Jul 13, 2026
Tile Calculator Quick	Tools	—	10+	Jun 21, 2026
Study Nook: Focus Timer	Productivity	—	10+	Jul 29, 2026
Interval Garden: Ear Training	Music & Audio	—	10+	Jul 29, 2026
Thread Pitch Quick	Tools	—	10+	Jun 22, 2026
ScreenScope: Pixel & Touch	Tools	—	10+	Jul 14, 2026
SeamStack: Screenshot Stitch	Tools	—	10+	Jul 16, 2026
Curtain Size Quick	House & Home	—	10+	Jun 22, 2026
ExifShield: Photo Privacy	Tools	—	10+	Jul 14, 2026
Plant Spacing Quick	Tools	—	10+	Jun 22, 2026
WordK: Korean Vocab Coach	Education	—	10+	Oct 3, 2025
MarqueeDeck: LED Banner	Tools	—	10+	Jul 16, 2026
Knitting Gauge Quick	Art & Design	—	10+	Jun 22, 2026
Fabric Yardage Quick	Art & Design	—	10+	Jun 22, 2026
Belt Length Quick	Tools	—	10+	Jun 22, 2026
ClipShelf	Productivity	—	10+	Jun 14, 2026
Math Mallow: Mental Math	Education	—	10+	Jul 29, 2026
CodepointDeck: Text Inspector	Tools	—	10+	Jul 16, 2026
Ohm Law Quick	Tools	—	10+	Jun 21, 2026
Work Hours Quick	Tools	—	10+	Jun 18, 2026
DoseCare: Pill Reminder	Health & Fitness	—	10+	Mar 11, 2026
PulseDry: Speaker Water Eject	Tools	—	10+	Jul 16, 2026
Dim Weight Quick	Tools	—	10+	Jun 22, 2026
Coffee Ratio Quick	Food & Drink	—	10+	Jun 21, 2026
Discount Calculator Quick	Tools	—	10+	Jun 18, 2026
Fraction Calculator Quick	Education	—	10+	Jun 18, 2026
Grocery List Quick	Shopping	—	5+	Jun 18, 2026
TypeProof: Typing Speed Test	Tools	—	5+	Jul 14, 2026
Laundry Care Quick	Tools	—	5+	Jun 22, 2026
Sutra Drop	Lifestyle	—	5+	May 27, 2026
Bracket Grove: Tournament	Sports	—	5+	Oct 4, 2026
Study Sprout: Homework	Education	—	5+	Jul 29, 2026
GridPop: Photo Collage	Photography	—	5+	Oct 1, 2026
Recipe Scale Quick	Food & Drink	—	1+	Jul 3, 2026
Home Upkeep Log	House & Home	—	1+	Jun 3, 2026
Clockwork Focus	Productivity	—	1+	May 23, 2026
Lawn Seed Quick	Tools	—	1+	Jun 22, 2026
Recipe Scale Quick	Food & Drink	—	1+	Jun 21, 2026
Pantry Stock Quick	Food & Drink	—	1+	Jun 18, 2026
유통기한 박스	House & Home	—	1+	May 19, 2026
Age Date Quick	Tools	—	1+	Jun 18, 2026
Warranty Date Quick	Productivity	—	1+	Jun 18, 2026
Home Maintenance Quick	House & Home	—	1+	Jun 17, 2026
Plant Watering Quick	Tools	—	1+	Jun 17, 2026
PDF Scanner - PaperLite	Productivity	—	1+	May 17, 2026
TOEIC Recall Voca	Education	—	1+	Aug 23, 2026
Tip Split Quick	Tools	—	1+	Jun 18, 2026
MemeWarp: 재미있는 사진 필터	Photography	—	1+	—
TastyPic: Food Photo Editor NEW	Photography	—	1+	Oct 21, 2026
SubmitFit	Tools	—	0+	Sep 19, 2026
QR Poster Quick	Tools	—	0+	Jun 18, 2026
Simple Watch Face 2	Health & Fitness	—	0+	Jan 27, 2023
Simple Watch Face	Art & Design	—	0+	Nov 3, 2022