Comparison

Fret Pro Guitar Notes Trainer vs Clef Trainer Grid

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fret Pro Guitar Notes Trainer

Master your guitar or bass fretboard with this fun and easy trainer. Using scientifically proven methods, it helps you memorize notes quickly through bite-sized practice sessions. Build muscle memory by playing on your actual instrument.

Highlights
  • Memorize guitar/bass notes
  • Spaced repetition learning
  • Practice on real instrument
  • Track progress
  • Bite-sized practice sessions
  • Supports multiple instruments
Features
Read full description

Every guitar/bass player knows that they *should* have the fretboard memorized, but they don't because it's tedious and boring. Fret Pro can do all the hard work for you! With just 10 minutes a day, you’ll have the fretboard memorized in no time. It's easy and fun! SPEAK THE LANGUAGE OF YOUR INSTRUMENT Having the notes on your guitar or bass fretboard memorized is the most important step toward becoming fluent in the language of your instrument. When you master the fretboard, you can spend less time thinking and more time enjoying playing music. PLAYER HIGHLIGHTS - "I’ve had lessons on-and-off for 10 years, but never did the work of really knowing the notes on the fretboard. I didn’t think it really mattered. But now, concepts I slightly understood before are falling into place, and I’m able to communicate with my teacher in the same language. Recommended." - "I’ve been struggling to memorize the notes on the fretboard for awhile now. This app really helped me get the practice I needed!" LEARN GUITAR FRETBOARD FAST Fret Pro is the fastest way to memorize the music notes on your guitar fretboard. Using scientifically-proven spaced-repetition techniques, Fret Pro helps you memorize each note in the most efficient way. Practice sessions are organized in bite-sized chunks so you can practice as much or as little as you want! BUILD REAL MUSCLE MEMORY Fret Pro is a different kind of fretboard trainer. You build muscle memory and fretboard vision by playing notes on your *real guitar or bass*. FREE FEATURES - Play notes on your real guitar or bass (or both). The natural notes on your first two strings are FREE. - Track progress toward fretboard mastery - Use your device's built-in microphone (an audio interface) - Have your device speak the notes for screen-free practice UPGRADE FEATURES - Unlock all notes on all strings - Focus practice on a specific string or strings - Focus practice on natural notes only or all notes SUPPORTED INSTRUMENTS - 6 string guitar - 7 string guitar - 8 string guitar - 4 string bass - 5 string bass - 6 string bass - Mandolin - Guitarlele/Ukitar - Want something else? Contact us at support@fretpro.app TIPS - The Fret Pro app works best with an acoustic guitar or bass, or an electric guitar or bass with amplifier. It will also work for an unamplified electric guitar and bass in very quiet environments. - The app listens for you to play the correct note, but that doesn't mean you can't make things more exciting. Try practicing different picking patterns, techniques, and rhythms. - Use your favorite effects and pedals like delay, reverb, or distortion! We'll still recognize if you play the right note… though pitch modulating effects probably won't work :) - Try to visualize a fretboard in your mind as you play each note. Can you play each note without looking at your fretboard? - Use the String Focus in settings to hone in on a specific string until you know it by heart. Memorizing the notes on your guitar or bass is a great way to take your playing to the next level. Supplement your current music practice or lessons with ten minutes per day and you'll be surprised at how fast you learn the notes. NOTE FROM THE DEVELOPER Hi! Fret Pro is an indie app made by one guy (me!), who is deeply passionate about music. It is my top priority to build an app that is actually *useful*. There is no nonsense and no tricks to steal your time or money. I actually want the Fret Pro app to be so good that you can STOP using it because it served its purpose (helping you memorize the notes) and you don't need it anymore! Got an idea to help make Fret Pro better? Send me a message at support@fretpro.app! The app is under active development and I’m constantly thinking of ways to make memorizing and visualizing the fretboard faster and easier. Thanks so much for your support, feedback, and reviews! Subject to Apple's standard license agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Clef Trainer Grid

Master sheet music reading across multiple clefs. Practice note input via touch, MIDI keyboard, or microphone. Features a unique grid input to ensure genuine learning, not just muscle memory.

Highlights
  • Treble, alto, and bass clef support
  • Major and minor key signature support
  • Accidental support
  • Adjustable ledger lines
  • Grid input for muscle memory prevention
  • MIDI keyboard and microphone input
  • Cheat Mode for real-time note names
Features
Currently charting
Read full description

Learn to read sheet music over various clefs! Practice reading and inputting notes using your finger, plugging a piano keyboard in, or virtually any other instrument using the microphone input mode. Take your skills outside of the app: Clef Trainer Grid also features a special grid input that scrambles button locations to prevent the building of a muscle memory. This ensures that you're actually learning the note letters, rather than just learning how to use an app! Still want to learn the piano keys? No worries! You can also switch a classic piano input at any time. Features also include: * Support for treble, alto, and bass clefs * Support for every major and minor key signature * Support for accidentals—Choose if you want to play outside of the key! * Adjustable number of ledger lines * Cheat Mode—View the names of the notes in real-time! * Dark Mode * Ghost Note —View miss-input notes on the staff

Screenshots

Fret Pro Guitar Notes Trainer4 screens
Clef Trainer Grid4 screens

Verdict

The call

The clearest difference is price: Fret Pro Guitar Notes Trainer at Free against Clef Trainer Grid's $2.99. Fret Pro Guitar Notes Trainer also leads on ratings volume (806 vs 12). Clef Trainer Grid's advantage is in-app purchases (none vs 11) and update cadence (daily vs weekly). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Fret Pro Guitar Notes Trainer is free to download; Clef Trainer Grid costs $2.99 up front. Fret Pro Guitar Notes Trainer sells 9 in-app purchases, starting at $5.99 per month. Clef Trainer Grid asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Clef Trainer Grid holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fret Pro Guitar Notes Trainer has 806 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 69% of Fret Pro Guitar Notes Trainer's written reviews are positive against 83% of Clef Trainer Grid's.

UpkeepUpdate frequency

Fret Pro Guitar Notes Trainer ships an update weekly, Clef Trainer Grid daily. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

Scorecard9 real differences · 2 level
Fret Pro Guitar Notes Trainer versus Clef Trainer Grid: the parameters behind the verdict, then further details
ParameterFret Pro Guitar Notes TrainerClef Trainer Grid
PriceFree — better$2.99
Rating4.8 (806 ratings)5.0 (12 ratings) — better
Positive reviews68.8% of reviews83.3% of reviews — better
Number of ratings806 — better12
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#168 — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size66 MB3 MB
Age rating4+4+
DeveloperFretboard Hacking LLCJohn Andersen

Customer experience

Fret Pro Guitar Notes Trainer

All ratings806 ratings
Positive94.3%
Neutral1.9%
Negative3.8%
Written reviews144 reviews
Positive68.8%
Neutral9.7%
Negative21.5%

Clef Trainer Grid

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral16.7%
Negative0.0%

Bugs and requests

Fret Pro Guitar Notes Trainer

Reported bugs

3 issues
  • Incorrect note recognition
  • Microphone issues after app relaunch
  • Inconsistent progress tracking

Requested features

5 requests
  • Add custom tunings
  • Allow selecting specific notes/areas to practice
  • Incorporate solfege and scale degrees
  • Provide progress tracking across devices
  • Add metronome functionality

Clef Trainer Grid

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Fret Pro Guitar Notes Trainer

Subscriptions6
  • Monthly7 Days trial2 variants$5.991 Month
  • Monthly + Family7 Days trial2 variants$9.991 Month
  • Yearly14 Days trial$29.991 Year
Show 3 more
  • Yearly7 Days trial$29.991 Year
  • Yearly + Family7 Days trial$49.991 Year
  • Yearly + Family14 Days trial$49.991 Year
One-time3
  • Unlock all notes$4.99
  • Lifetime$64.99
  • Lifetime + Family$79.99
None

Clef Trainer Grid

No in-app purchases

Questions

Is Fret Pro Guitar Notes Trainer free?
Fret Pro Guitar Notes Trainer is free to download, with in-app purchases available.
Is Clef Trainer Grid free?
Clef Trainer Grid costs $2.99, with no in-app purchases.
Which has better reviews, Fret Pro Guitar Notes Trainer or Clef Trainer Grid?
Clef Trainer Grid is rated higher. Fret Pro Guitar Notes Trainer averages 4.8 out of 5 from 806 ratings, while Clef Trainer Grid averages 5.0 from 12 ratings.
Do Fret Pro Guitar Notes Trainer or Clef Trainer Grid have ads?
Neither Fret Pro Guitar Notes Trainer nor Clef Trainer Grid shows ads.
Which is updated more often, Fret Pro Guitar Notes Trainer or Clef Trainer Grid?
Fret Pro Guitar Notes Trainer ships an update weekly, and Clef Trainer Grid daily. Most recently, Fret Pro Guitar Notes Trainer was updated on September 23, 2026 and Clef Trainer Grid on September 21, 2026.

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