Comparison

Harp Guru vs JustinGuitar Note Trainer

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

Head to head
About

Harp Guru

This app provides interactive visualizations to help harmonica players understand instrument layouts, explore musical possibilities, and internalize patterns for confident improvisation. It guides users past discordant tones and supports various scales, tunings, and valving setups.

Highlights
  • Interactive harmonica layout visualizations
  • Explore musical possibilities and limitations
  • Internalize mental models for improvisation
  • Guide past discordant tones
  • Comprehensive scales and tunings list
  • Support for valving setups
Features
Read full description

Building a working knowledge of a harmonica's layout is a real challenge. New players struggle to make sense of basic patterns, and even experienced players can find themselves lost in higher registers or different keys. The Harp Guru gives you interactive visualisations to: - Help you understand how your harmonica is laid out - Show you the possibilities and limitations of each position - Show you the possibilities and limitations of each harmonica - Move your licks between registers with confidence - Guide you past the discordant tones during improvisations - Act as reference in all situations before you have a perfect mental model Then Harp Guru helps you internalise all of this in to a mental model so you can improvise and change key confidently with your eyes closed. There will always be another harmonica layout or position to learn though, and Harp Guru will be able to help, whatever combination you need to work on. Featuring a comprehensive list of scales & tunings, all with the option to add valving setups. Find complete list of features and instructions on how to get the most out of Harp Guru at https://www.youtube.com/channel/UC_uFG-i4MZeFE3JYoFv0R0A

About

JustinGuitar Note Trainer

Master the guitar fretboard quickly with daily exercises designed to build a deep understanding of note locations. This app helps you stop guessing and start knowing every note on your guitar, improving your playing.

Highlights
  • Learn fretboard notes fast
  • Daily 5-minute exercises
  • Build mental map of guitar neck
  • Stop guessing, start knowing notes
  • Smart repetition for weak spots
  • Practice anywhere on your phone
Features
Currently charting
Read full description

Most guitar players never properly learn the notes on the fretboard. We memorize shapes and guess—and it works for a while. But when we try to improve, we hit a wall. JustinGuitar Note Trainer helps us learn the fretboard fast, in just 5 minutes a day. No diagrams. No memorizing charts. Just simple exercises that build a real understanding of the guitar neck. We learn to find any note on the guitar fretboard, build a clear mental map across all strings, and stop guessing and actually know the notes. Short daily exercises perfect for busy schedules, smart repetition to reinforce weak spots, and practice anywhere with your phone. If we want to learn guitar notes properly, this is one of the most valuable skills we can build. Built by JustinGuitar.

Screenshots

Harp Guru4 screens
JustinGuitar Note Trainer4 screens

Verdict

The call

The clearest difference is rating: JustinGuitar Note Trainer at 4.4 against Harp Guru's 3.8. JustinGuitar Note Trainer also leads on update cadence (fortnightly vs every 6 weeks) and review sentiment (80% vs 67%). On price, ratings volume, ads and in-app purchases 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

Harp Guru costs $4.99 and JustinGuitar Note Trainer $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

JustinGuitar Note Trainer holds the better App Store score, 4.4 against 3.8. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 67% of Harp Guru's written reviews are positive against 80% of JustinGuitar Note Trainer's.

UpkeepUpdate frequency

Harp Guru ships an update every 6 weeks, JustinGuitar Note Trainer fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 7 level
Harp Guru versus JustinGuitar Note Trainer: the parameters behind the verdict, then further details
ParameterHarp GuruJustinGuitar Note Trainer
Price$4.99$4.99
Rating3.8 (6 ratings)4.4 (5 ratings) — better
Positive reviews66.7% of reviews80.0% of reviews — better
Number of ratings6 — better5
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#54 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size39 MB40 MB
Age rating4+4+
DeveloperJoseph SinfieldJustin Guitar

Customer experience

Harp Guru

All ratings6 ratings
Positive66.7%
Neutral16.7%
Negative16.7%
Written reviews9 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

JustinGuitar Note Trainer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

None

Harp Guru

No in-app purchases

None

JustinGuitar Note Trainer

No in-app purchases

Questions

Is Harp Guru free?
Harp Guru costs $4.99, with no in-app purchases.
Is JustinGuitar Note Trainer free?
JustinGuitar Note Trainer costs $4.99, with no in-app purchases.
Which has better reviews, Harp Guru or JustinGuitar Note Trainer?
JustinGuitar Note Trainer is rated higher. Harp Guru averages 3.8 out of 5 from 6 ratings, while JustinGuitar Note Trainer averages 4.4 from 5 ratings.
Do Harp Guru or JustinGuitar Note Trainer have ads?
Neither Harp Guru nor JustinGuitar Note Trainer shows ads.
Which is updated more often, Harp Guru or JustinGuitar Note Trainer?
Harp Guru ships an update every 6 weeks, and JustinGuitar Note Trainer fortnightly. Most recently, Harp Guru was updated on October 24, 2026 and JustinGuitar Note Trainer on October 25, 2026.

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