# Guitar Codex — Chords, scales & 140 lessons > Guitar learning and reference tool with tuner, metronome, and extensive chord/scale libraries. (iPhone/iPad app by CampCheck Interactive LLC.) - Source: https://appshunter.io/ios/app/guitar-codex/id6800162755 (this page in markdown: same URL + `.md`) - Developer: [CampCheck Interactive LLC](https://appshunter.io/developer/6800162757) - Category: Music, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 38 MB - Languages: American English - Released: 2026-08-25 - Data updated: 2026-09-12 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/guitar-codex/id6800162755/reviews.md ## What is Guitar Codex? Guitar Codex is the app you reach for every time you pick up a guitar. Tune up, check a chord, run a scale, or sit down for a proper lesson. It works for total beginners and for players twenty years in. THE TOOLS - Chromatic tuner with a smooth needle and presets for Standard, Drop D, Open G, DADGAD, and more. Reference pitch is adjustable from 432 to 445 Hz. - Metronome with tap tempo, time signatures, and a visual beat indicator. - An interactive circle of fifths: tap any key and see its seven chords, its key signature, and its relative key. THE LIBRARIES Every chord, scale, arpeggio, and triad renders on the same big, high-contrast fretboard diagram, with each note color-coded by its job in the shape: root, 3rd, 5th, and so on. You learn why a shape works, not just where your fingers go. - Chords: every common type and voicing, with CAGED positions up the whole neck - Scales: five boxes per scale, a full-neck view, and advice on when to use each one - Triads: three string sets, three inversions each, all on one page - Arpeggios: chord tones mapped across the neck for every quality THE COURSE 140 lessons in 12 modules take you from holding the guitar for the first time through chords, scales, theory, the CAGED system, progressions, modes, songwriting, technique, genre studies, and fretboard and ear mastery. Lessons teach with diagrams and real songs, and every one ends with a short Try It exercise you can do with the guitar in your hands. All of Module 1 is free. PAY ONCE, OWN IT FOREVER Guitar Codex has no subscription and never will. The free version includes the full tuner, the metronome, and a real taste of everything else. Two optional one-time purchases unlock the rest: Pro, the complete reference toolkit, and Complete, which adds all 140 lessons plus every lesson added in the future. Buy it once and it is yours for good. ## Key features - Chromatic tuner with multiple presets - Metronome with tap tempo - Interactive circle of fifths - Extensive chord and scale libraries - 140 structured lessons - Fretboard diagrams with color-coded notes ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Guitar Codex Pro | $9.99 | one-time | | Guitar Codex Complete | $19.99 | one-time | | Pro to Complete Upgrade | $9.99 | one-time | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/guitar-codex/id6800162755/reviews.md ### 5/5 — So helpful! *2026-08-29* I have been looking for an app that could give me everything I needed in one place. I even find myself using the features I didn’t think I would, like the metronome. I really appreciate the intuitive layouts for all the chord variations up and down the neck. ### 5/5 — Everything you need in one place *2026-08-29* I’m always going online and either watching YouTube or looking for chords for a song to learn, and these days, the sites don’t have the actual tabs for the chords. Now I can just use this app to figure out the exact fingering for any song I need. Plus, since I was never formally trained, I can learn some fundamentals while I’m here. Been helpful for me! ## Frequently asked questions about Guitar Codex ### What is Guitar Codex? Guitar Codex is a music app designed to help guitarists learn and practice. It offers tools like a tuner, metronome, and extensive libraries of chords and scales, alongside a structured 140-lesson course. ### Is Guitar Codex free to use? Yes, Guitar Codex is free to download and use. The free version includes the full tuner, metronome, and a sample of other features. Additional content and features are available via one-time in-app purchases. ### What are the in-app purchase options for Guitar Codex? Guitar Codex offers two one-time purchases: 'Pro' unlocks the complete reference toolkit, and 'Complete' unlocks all 140 lessons and future lesson additions. These are pay-once, own-forever options. ### What musical concepts does Guitar Codex teach? The 140 lessons cover a wide range of topics including holding the guitar, chords, scales, music theory, the CAGED system, progressions, modes, songwriting, technique, genre studies, and fretboard and ear mastery. ### What devices does Guitar Codex support? Guitar Codex is available on iPhone, iPad, and iPod touch, making it accessible for a wide range of Apple users. ### How often is Guitar Codex updated? The app was last updated on August 28, 2026, indicating recent development and support. Future lessons are also promised to be added to the 'Complete' purchase. ### What is the age rating for Guitar Codex? Guitar Codex has an age rating of 4+, making it suitable for users of all ages interested in learning guitar. ### Does Guitar Codex have ads? No, Guitar Codex does not contain advertisements. The app is designed to be ad-free, with monetization solely through optional one-time in-app purchases. ## Version history (last 3 releases) ### 1.0.2 — 2026-08-28 - App Icon Update ### 1.0.1 — 2026-08-27 Sharper fretboards and smarter chords in this one: - The neck map now stays pinned while you scroll chord positions, with the active position highlighted - Corrected maj7 CAGED voicings - every shape now sounds the full 1-3-5-7 - Fretboard diagrams re-centered with cleaner fret labels - no more clipped notes - Fixed position markers not responding to taps on some devices ### 1.0 — 2026-08-26 No release notes. --- *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 2026-09-12.*