# FretLogic: Play the Changes — Guitar Fretboard & Chord Tones

> Guitar Fretboard & Chord Tones (iPhone/iPad app by Full Stack Product LLC.)

- Source: https://appshunter.io/ios/app/fretlogic-play-the-changes/id6812564916 (this page in markdown: same URL + `.md`)
- Developer: [Full Stack Product LLC](https://appshunter.io/developer/1546116631)
- Category: Music
- Price: $19.99
- Age rating: 4+
- Requires: iOS 27.0 · 9 MB
- Languages: American English
- Released: 2026-10-09
- Data updated: 2026-10-12

## What is FretLogic?

FretLogic shows you what to play over any chord progression, so you can stop memorizing other people's music and start improvising your own.

Start with a chord progression and FretLogic automatically maps the fretboard to the key and scale.

Dial in the right level of note detail by quickly toggling between chord voicings, arpeggios, pentatonics, and full scales.

FretLogic highlights the chord tones so you can see which notes to target while building lead lines.

Every chord is explained in the context of the progression: why it works, and which chord tones to aim for as the next change arrives.

One-time purchase. Native versions for Mac, iPhone, and iPad, with all your progressions synced through iCloud.

OTHER FEATURES

- Metronome that automatically advances the chords as you practice
- Chord suggestions, including secondary dominants and borrowed chords, to give your progression more movement
- Selectively enable positions of the fretboard to help you focus. All positions are based on the CAGED shapes, so they double as practice references
- Triad highlighting across all string sets and inversions
- Drag chord voicings anywhere on the neck for an instant reference to play the progression in any position
- Build chord progressions with sections (verse, chorus, bridge)
- Paste chord charts that contain sections and lyrics, and FretLogic automatically pulls out the chords
- Mac keyboard shortcuts

WHY I BUILT THIS

I love the guitar, and I wanted to become more expressive with the instrument instead of being stuck in the rut of memorizing other people's music.

I found that fretboard fluency means integrating several concepts in real time: chord theory, keys, scales, finger positions, and basic music theory. All of it comes down to knowing what chords to play and which notes to target in those chords to build melodic phrases.

Give FretLogic the chords, and it puts all of that in front of you, focused on the progressions you're actually learning.

I truly appreciate your support.

## Is FretLogic safe?

Not enough ratings yet to assess FretLogic.

## Is FretLogic legit?

FretLogic: Play the Changes appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for FretLogic is 68 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-09

No release notes.

## More apps by Full Stack Product LLC

- [Base Builder](https://appshunter.io/ios/app/base-builder/id1546116629)

All apps by Full Stack Product LLC: https://appshunter.io/developer/1546116631

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-12.*