Oolimo Guitar Chords2.2.3 - App Store

Oolimo is the interactive foundational reference for guitar chords - a learning and lookup app that explains chords clearly, supports songwriting, and inspires fresh sounds on the guitar.

- No subscription! Pay once - use it forever and receive updates.
- Current languages (included in every app): English, German, Spanish, French, Italian, Dutch, Danish, Norwegian, Swedish, Portuguese (Brazil), Portuguese (Portugal), Chinese (Simplified), Indonesian, Japanese.

Learn guitar chords and chord symbols as used by professional guitarists in modern pop, rock and jazz - including complex jazz chords.
Let the Chord Analyzer name chords you've discovered on the guitar and show you how they are built.

- Chord Finder, Chord Analyzer and music theory in one app.
- Learn and understand chords
- Read chord symbols confidently (including complex jazz chords)
- Analyze chords instead of guessing
- Apply music theory directly on the fretboard
Oolimo clears up nonsense chords and incorrectly or confusingly written chord symbols, and explains with clear logic how chord symbols (chord names) are written unambiguously and how to correctly interpret different notations. When musicians from all over the world play together, it's important that everyone speaks and understands the same language - and that the language is easy and clearly understandable.
- The Modules -

Chord Finder
Find musically meaningful chords instead of random guitar shapes. All fingerings come from a hand-curated database of playable voicings and are intelligently transposed by an algorithm. Every chord adapts automatically to the selected key. With a single tap you can send shapes directly to the Analyzer and explore inversions and different interpretations of the chord.

Chord Analyzer
Enter any guitar chord into the virtual fretboard and instantly get the correct chord name, including inversions. No "unknown chord" messages thanks to the intelligent recognition algorithm - even for complex chords, slash chords and inversions. The Chord Analyzer also supports alternative tunings (open tunings).

Chord Progressions
Explore and compare the most important chord progressions with an innovative matrix that visualizes harmonic functions and relationships.
Practice the most important progressions systematically in different keys and variations - and master them so well that you can rattle them off in rehearsal to the amazement of your bandmates.

Theory Lessons
22 interactive lessons with smart visualizations explain intervals, chord construction, voicings, slash chords, diatonic harmony and all major chord types - from first explorations on the fretboard, through major, minor and dominant 7th to altered, sus, add, 6th and diminished chords.

Quizzes
Use the quizzes to test and internalize your knowledge through play. The quiz tasks cover many topics: chord construction, intervals, harmonic context, chord types, voicings, tensions and much more.

Version History New languages: Indonesian and Japanese (in addition to English, German, Spanish, French, Italian, Dutch, Danish, Norwegian, Swedish, Portuguese (Brazil), Portuguese (Portugal) and Chinese (Simplified)) 2.2.3 Jun 30 – New languages: Chinese (Simplified)
– Bug fix: A few texts were not displayed due to an error 2.2.1 May 19 – New languages: In addition to English, German and Spanish, you can now also select French (FR), Italian (IT), Dutch (NL), Danish (DA), Norwegian (NO), Swedish (SV) and Portuguese (Brazil: PTB / Portugal: PTG). Languages can be added to or removed from the quick language selector (button with speech bubble and language code) via the "Languages" button on the home screen.
– Solfège syllables (Do Re Mi Fa Sol La Ti Do) in translations have been completely replaced by the letter system (C D E F G A B C).
– Improved help section.
– New function when playing chords / notes on the fretboard with the play button:
– Short tap: Very short interval between notes.
– Hold: Notes played individually with a longer interval.
– Audio playback now independent of the physical mute switch on iPhones.
– Correction of spelling, grammar, duplicate words and copy-paste duplicates in all texts.
– Correction of content errors and incorrect terminology in texts and quizzes. 2.2.0 Apr 25 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 2.0.1 11/08/2025 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 2.0.0 11/05/2025 Bugfixes 1.2.03 04/01/2024 Bugfixes, internal module updates 1.2.02 03/30/2024 Bugfixes 1.2.01 03/26/2024 Chord theory lessons have now been added to the Oolimo app, including the lessons for the various basic chordtypes. 1.2.0 03/21/2024 Important bugfix, solves problems that occurred with some older devices respectively older operating systems, resulting in incomplete loading of certain parts. 1.1.91 11/07/2022 Both in the Chord Finder and in the Chord Analyzer you can now find the Chord Summary Tool (archtecture of the actual chord and chord symbol in a graphical and clearly arranged way).
In the Chord Finder you'll find a description of the chord type as before under the chord summary, while in Chord Analyzer remarks and warnings will help to find the best interpretation / chord name.
Improved chord naming algorithm. 1.1.90 10/21/2022 New summary in the Chord Finder.
Revised chord database.
Chords are arranged in groups: MUST-KNOW chord shapes, OPEN CHORDS, MOVEABLE (whole shape can be transposed to another key by moving it up or down), open chords using a CAPODASTER
Revised application of parentheses in chord symbols.
V7(9,13) respectively maj7(9,13) chords now integrated in V13 respectively maj13 chords. Please descriptions for those chord types in the Chord Finder. 1.1.82 05/22/2022 Several new slash chords added to chord finder,
some bugfixes. 1.1.71 08/16/2021 Chord Progressions! Many of the most common and important chord progressions shown in several variations (and all keys of course). The chord matrix is a truly innovative tool to find chord progressions and visualizes the main chord types you can use for every possible root (scale degrees and notes in-between) in every single key.
Optimized navigation in the help section. The last reading position will be stored now.
Mute button on the start screen.
Many small fixes and improvements, edits and additions to the content 1.1.70 05/26/2021 The eagerly awaited update by all left-handed users! Left-hand mode, chord diagrams in quiz solutions complemented with full functionality (play button, notes/intervals switching) and other more subtle improvements. 1.1.60 05/05/2020 Open Tunings!!! The Oolimo Chord Analyzer now supports alternative tunings! The tuning manager (opens by a touch on the displayed tuning) allows you to choose from several preset tunings that can be modified at will. This is an eagerly awaited update for many users who requested this feature. 1.1.50 02/16/2020 Several bugfixes. Improvements in the chord analyzer algorithm. See a detailed listing under help > this version. 1.1.42 01/29/2020 Completes the new audio options in version 1.1.40 with wav audio files (now default audio format). In case of problems with audio playback you can change the audio format and method of audio processing (start screen > help > problems with audio playback?). 1.1.41 01/13/2020 - Modified audio processing. Several methods to choose from (help > problems with audio...) may help in case of problems with audio playback.
- Last chord and settings (chord name options, notes/intervals,...) are kept stored now.
- Selected key button or chord shape thumbnail are scrolling automatically to center position (as far as scrolling is possible).
- Question 2 in quiz "V7, m7 and maj7 chords": right answer was rated as incorrect and a wrong solution was shown. Fixed.
- Diminished chord (dim7/dim) in the chord analyzer: now correct indication of the diminished 7th as dim7 instead of 6 on fretboard. Correct/enharmonic notename with "super correct button" (allows bb,##,Cb,Fb,B#,E#).
- In the chord finder (on the fretboard) the diminished 7th is consequently and unmistakably indicated as dim7 instead of b7 (that may cause confusion with a minor 7th).
- and as always other small fixes, modifications and improvements that can't be mentioned in detail. 1.1.40 01/09/2020 This Version fixes a problem in the menu of the guitar chord quizzes that have recently been added to the well-established chord finder and chord analyzer. 1.1.3 09/07/2019 The Oolimo guitar chord quizzes have recently been added to the well-established chord finder and chord analyzer. This Version fixes a possible misbehavior that may have occurred after starting several quizzes and a missing answer in the quiz on slash-chords. 1.1.2 08/27/2019 This version adds the Oolimo guitar chord quizzes to the well-established chord finder and chord analyzer. The Quizzes are a genius way to improve and strengthen your guitar chord knowledge. If you don't feel comfortable to practice guitar in the subway or at work, just do a quiz ;-) 1.1.0 08/09/2019 1.0.2 05/17/2019