mongdaewon
Apps
Blog
Tools
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We build apps that help your daily life.
Apps
Ivy To Do
A simple daily to-do app based on the Ivy Lee Method. Start with your six most important tasks.
iPhone · Android
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WidPass
Keep all your QR codes and barcodes in one place, and use them right from the widget.
iPhone
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Deep Breath
A simple breathing app that helps you relax and focus.
iPhone · Android
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Where Is My Cursor
Highlight your mouse cursor with a halo, spotlight, and on-screen drawing - built for presentations and screen sharing.
Mac
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JoinCut
Pick the parts you want, or merge whole videos, with no quality loss.
iPhone · Android
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AudioJoin
Trim what you don't want and merge audio files into one.
iPhone · Android
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JoinSound
Join audio files into one, in the order you want.
iPhone · Android
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JoinPDF
Merge PDFs and photos into one PDF, page by page.
iPhone · Android
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RecNow
Record your screen with sound. No ads, no subscription.
Android
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Jumpbar
Type a keyword before your search and Safari jumps straight to that site's results.
iPhone
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Sulsul
A Korean crossword puzzle with large tiles and large text.
iPhone · Android
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Chukchuk Janggi
Korean chess (Janggi) with large pieces and large text.
iPhone · Android
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Blue Dot Defense
Build a maze of towers and stop the alien invasion before it reaches Earth.
iPhone · Android
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Can't Quit
Flashcards that bring each card back right before you forget it.
iPhone · Android
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Latest posts
All posts
Nov 12, 2026 · JoinSound
How to Extract Audio from a Video on iPhone
Nov 11, 2026 · JoinPDF
How to Make a PDF on iPhone From Photos (One or Many Pictures)
Nov 11, 2026 · JoinPDF
How to Combine PDF Files on iPhone (and Put Photos in the Same PDF)
Tools
iTool
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50+ free browser-based tools for PDF, images, and text. No install, no sign-up.
YouTube Transcript Helper
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Extract, translate, and export YouTube captions from a side panel.
Naver Blog Tool
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Real-time character count, stats, and text-to-speech for Naver Blog.
Oh My Table
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Detect any web table and export it to Excel, CSV, Markdown, or PNG.
iTool Mouser
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Right-drag to control tabs and pages. The path you draw and the action about to run are shown on screen.