FretTools: Guitar Toolkit
Gear Inventory, Tuner, Chords
Only for iPhone
Free · In‑App Purchases
iPhone
FretTools
Gear Tracker. Diagnostic Tuner. Chord Library.
GEAR TRACKER
Your gear documented and accessible when it matters.
• Track guitars, basses, amps, pedals, and more
• Store serial numbers, specs, purchase details, values, and notes
• Attach photos to each item
• Record string changes with brand, model, gauge, and date
• Log maintenance, repairs, setups, and modifications
• Export a formatted PDF with with gear details for insurance or resale.
DIAGNOSTIC TUNER - FREE. ALWAYS.
Tune accurately and get useful feedback about string condition and intonation.
Responsive tuning for guitar, bass, ukulele, banjo, mandolin, violin, and more.
• Real-time note and cents display
• Strobe-inspired ring for clear sharp/flat feedback
• Instrument-specific tuning presets
• Harmonic Lanes for detailed pitch analysis
String Diagnostics:
• String Health evaluates tuning stability and harmonic agreement
• Intonation analysis helps reveal possible setup inconsistencies
• Save diagnostic history to a selected instrument
• Compare readings across the life of the current string set
• Start a new session when you log a string change
String Diagnostics provide guidance and do not replace a full instrument inspection or professional setup.
CHORD LIBRARY
Find chords quickly across multiple guitar tunings, ukulele, and mandolin.
• 2,500+ chords with 3,200+ voicings
• Clean diagrams with finger positions
• Open chords, barre chords, inversions, and alternate voicings
• Slash chords with alternate bass notes
• Browse by root, chord type, category, or key
• Diatonic chords grouped by harmonic function
• Play full chord strums
• Tap individual notes to hear them in isolation
WHY FRETTOOLS
• Three practical tools in one app
• Works offline
• No account required to get started
• Clean, focused interface
• Built for working musicians and hobbyists alike
FREE → PRO
The Diagnostic Tuner is unlimited and always free.
Upgrade to Pro for:
Gear
• Unlimited gear items
• Up to 8 photos per item
• Maintenance and string-change tracking
• PDF export
Chords
• Additional voicings and inversions
• Slash chords
• Full key-based browsing
Additional
• Removes ads
THE BOTTOM LINE
Track your gear. Tune and diagnose your strings. Find the chords you need.
Privacy Policy: https://frettools.com/privacy
Terms & EULA: https://frettools.com/terms
This update focuses on a smoother, more accurate tuning experience.
• Faster, more confident tuning with improved note lock and re-strike detection
• Clearer visual feedback while you tune, including brighter note letters when you're on target
• Refined first-time setup so new players get to the tuner faster
• Improved translations across all supported languages
• Bug fixes and performance improvements
Thanks for playing with FretTools. Keep those strings in tune!
The developer, webLuthier, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- webLuthier, LLC
- Size
- 68.9 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later.
- iPhone
- Languages
English and 4 more
- English, Italian, Portuguese, Spanish, Swedish
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Lifetime Pro $49.99
- Monthly Pro $2.99
- Yearly Pro $17.99
- Copyright
- Copyright © 2026 webLuthier, LLC.