Oolimo Guitar Chords
Guitar chords made clear
$9.99 · Designed for iPad
### Now includes Spanish too! ### The foundational resource and toolbox that demystifies every chord and makes learning a pleasure. Finally make sense of guitar chords!
Oolimo – The Guitar Chord Bible
Learn, understand and master guitar chords like never before.
Oolimo is the interactive learning and reference app that helps you finally make sense of chord symbols, chord names, and harmonic relationships on the guitar. Created by guitarist and developer Oliver Mochmann, Oolimo unites musical depth with clarity and usability—turning theory into something you can actually see, hear, and understand.
Why Oolimo is different?
The web is full of chord charts and tutorials—but few explain why chords work the way they do.
Oolimo fills this gap with a structured, unified, and accurate approach to chord theory. Think of it as a “foundational work” for guitar harmony—clear like a math framework, but engaging like a creative playground. Whether you’re a beginner or an experienced player, you’ll gain lasting insight instead of fragmented tips.
Main modules:
Chord Finder
Discover chords that really make musical sense. All shapes come from a manually curated database of usable voicings, transposed intelligently by an algorithm that knows real-world theory. Each chord adapts automatically to your selected key. Transfer shapes to the Analyzer with a single tap.
Chord Analyzer
Enter any fingering on the virtual fretboard and get the correct chord name instantly—no “unknown chord” messages. Supports standard and open tunings (chord analyzer only). Includes advanced notation options (slash chords, double accidentals, enharmonics) and shows all notes on the staff.
Chord Progressions
Explore, compare, and learn common and essential progressions with an innovative matrix that visualizes harmonic functions and relationships. Practice them in all keys and contexts.
Theory Lessons
22 interactive lessons including smart visalisations explain intervals, chord construction, voicings, slash chords, diatonic harmony, and every major chord type—from major, minor, and dominant 7 to altered, suspended, add, sixth, and diminished chords.
Quizzes
Test your knowledge and train your ear anywhere. The quizzes cover chord construction, intervals, harmonic context, chord types, voicings, tensions, and more—learning through play.
General features:
Interactive fretboard and chord diagrams with note and interval display
Playback of chords or single notes
Switchable between detailed or compact chord names
Day/night mode and left-handed mode
Languages: German, English, Spanish
2.0.1
Fixed issues when the app was installed on desktop devices or MacBooks (not actually intended, but partially possible). Two things were adjusted:
Optimized audio code. The samples now use .wav files instead of .mp3.
Fixed problems distinguishing between touchscreen and mouse/touchpad input.
2.0.0
Spanish added — selectable for all users (alongside English and German).
Fresh icons on the start screen
Refined texts, improved explanations
Bug fixes and performance optimizations
The developer, Oliver Mochmann, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Oliver Mochmann
- Size
- 10.8 MB
- Category
- Education
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPad
Requires iPadOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Mac
Requires macOS 12.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Classification
9+
- 9+
- Copyright
- © 2019 Oliver Mochmann
