Fretzl 4+

The guitar language app‪.‬

Decbl LLC

    • 5.0 • 6 Ratings
    • Free
    • Offers In-App Purchases



Learn the language of guitar!

Designed for beginners and experienced guitar players who want to understand the instrument deeply, Fretzl guides you through the fundamentals and more on the fretboard. Learn from a structured series of in-depth courses in notes, intervals, chords, chord inversions, scales, and arpeggios.

Fretzl makes it easy:

• Go at your own pace by choosing a daily goal and building a streak!

• Unleash your soloing and comping creativity by discovering new chords, scales, and arpeggios

• Spaced repetition means we'll keep track of what you need to review and when so you don't forget

• Learn the theory with our intuitive and hands-on approach in lessons

• Build fundamental fretboard skills you can apply no matter what style or songs you want to play

• Break bad habits of memorizing tab numbers and really understand what you're playing with our intervals-based approach

• Train your ear so you can play anything you can hear

• Get ready for practice with a built-in tuner

How Fretzl Works

Fretzl uses fast modern study methods like spaced repetition to build up your understanding and strengthen your memory along your journey to guitar mastery. Skills are learned in a logical progression and you can take time to review your trouble areas. Whether you hope to play rock, jazz, classical, blues, or any other major guitar style, Fretzl will help you build intuition on the instrument. Give it a try and see how Fretzl can help you on your path.

Any questions, thoughts, or concerns? We'd love to hear from you at

Terms of Use:

What’s New

Version 1.0.4

Minor bug fixes

Ratings and Reviews

5.0 out of 5
6 Ratings

6 Ratings

kyle hargus ,

Amazing learning app

If you want to learn scales, chords, and the building blocks of music theory all in one this app makes it super easy and fun. I wish I had this when I started learning guitar, it’s a great way to learn how songs and solos are put together!

Snorfed ,

Great app

I like the app a lot. I’ve tried many guitar learning apps and the way this app gives feedback really worked with me. :)

GeorgeDuffy25 ,

Intuitive Design

Fretzl makes learning the guitar feel intuitive! Learned more in a day with Fretzl than months of YouTube videos.

App Privacy

The developer, Decbl LLC, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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