Comparison

Harp Guru vs Locksley

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

Locksley

This app provides quick reference information for locksmiths, covering mortice lock identification, gearbox identification, high security cylinders, and hinge adjustment guides. It serves as a digital sidekick for professionals in the trade.

Highlights
  • Mortice lock identification
  • Gearbox identification
  • High security cylinder guides
  • Hinge adjustment guides
  • Quick reference information
Features
Read full description

Locksley is your personal locksmith sidekick, containing quick reference information for mortice lock identification, gearbox identification, high security cylinders, hinge adjustment guides and more. Terms of use: https://locksley.app/_terms.html

Screenshots

Harp Guru4 screens
Locksley4 screens

Verdict

The call

The clearest difference is price: Locksley at Free against Harp Guru's $4.99. Locksley also leads on rating (5.0 vs 3.8) and review sentiment (80% vs 67%). On ratings volume, ads, in-app purchases 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

Locksley is free to download; Harp Guru costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Locksley holds the better App Store score, 5.0 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 Locksley's.

UpkeepUpdate frequency

Harp Guru ships an update every 6 weeks, Locksley every 3 weeks. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
Harp Guru versus Locksley: the parameters behind the verdict, then further details
ParameterHarp GuruLocksley
Price$4.99Free — better
Rating3.8 (6 ratings)5.0 (5 ratings) — better
Positive reviews66.7% of reviews80.0% of reviews — better
Number of ratings6 — better5
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.414.0 — better
Further details — not scored
Size39 MB528 MB
Age rating4+4+
DeveloperJoseph SinfieldLocksley.app LLP

Customer experience

Harp Guru

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

Locksley

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

Harp Guru

No in-app purchases

None

Locksley

No in-app purchases

Questions

Is Harp Guru free?
Harp Guru costs $4.99, with no in-app purchases.
Is Locksley free?
Locksley is free to download, with no in-app purchases.
Which has better reviews, Harp Guru or Locksley?
Locksley is rated higher. Harp Guru averages 3.8 out of 5 from 6 ratings, while Locksley averages 5.0 from 5 ratings.
Do Harp Guru or Locksley have ads?
Neither Harp Guru nor Locksley shows ads.
Which is updated more often, Harp Guru or Locksley?
Harp Guru ships an update every 6 weeks, and Locksley every 3 weeks. Most recently, Harp Guru was updated on October 24, 2026 and Locksley on October 24, 2026.

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