If you have ever stopped mid-practice because you could not remember how to finger a chord, you know how disruptive that moment is. You want something fast, visual, and reliable — not a cluttered website or a thick reference book sitting across the room.
I built this app because I kept running into exactly that problem. I wanted a single place to look up a chord, hear what it actually sounds like, and move on with my practice session without any friction.
The app, originally named 기타 코드 도우미 in Korean, started as a personal tool for acoustic and electric guitar beginners. The core idea — a dead-simple chord reference you can actually use mid-session — should resonate with any guitarist at the hobby or beginner level, regardless of where you are in the world.
What It Does
- Colorful chord diagrams: Browse chords organized by category — Major, Minor, 7th, Major 7th, Minor 7th, Sus, and more. Each diagram shows fingering positions, base fret, and barre placement at a glance.
- Synthesized chord audio: Tap any chord to hear a natural-sounding playback generated with Karplus-Strong synthesis. No external audio files to download — it works instantly and keeps the app lightweight.
- Favorites tab: Save the chords you use most often and pull them up in a dedicated tab. Useful when you are running through a song’s chord progression before a practice session.
- Learning quizzes: Three quiz modes let you drill chords in different ways — identify a chord name from its diagram, pick the right diagram from a chord name, or recognize a chord by its sound. Each session runs ten questions, keeping things focused and short.
- Progress statistics: Track your accuracy by quiz mode and by chord category, see your best scores, and view a recent score trend graph. It makes it easy to spot which chord types you still need to work on.
There is also a YouTube integration on the chord detail screen, so you can search and watch real performance videos without leaving the app. Seeing a chord played in context — not just shown as a static diagram — makes a meaningful difference when you are first learning.
The app supports both Korean and English, and you can switch between them freely in settings. It is free to use and supported by small banner ads placed where they will not interrupt your practice or study flow.
Who This Is For
This app is aimed at anyone just picking up the guitar for the first time, or a casual player who wants a fast reference without committing to a full-featured (and expensive) music app. If you find chord charts in songbooks confusing, if you want to preview a song’s chords before you sit down to learn it, or if you simply learn better when there is a game-like element involved, this is built with you in mind. It is intentionally simple — there is no steep learning curve to the app itself.
Version 1.0 is available now on the App Store. If you are an iOS user who plays guitar at any level, give it a download and see if it earns a spot in your practice routine.
App Store에서 다운로드: 기타 코드 도우미
Official page: reactiveworks.dev/apps/6765823901
Update history: ahngo13.github.io
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