Comparison

Guitar Scales Power vs Guitar Tuner EM

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

Head to head
About

Guitar Scales Power

Master guitar scales and modes with this comprehensive app. Features a built-in tuner, interactive scale visualizations, and practice loops to improve finger dexterity and improvisation skills. Supports various tunings and the CAGED system for fretboard mastery.

Highlights
  • Learn common guitar scales and modes
  • Accurate chromatic tuner with multiple tunings
  • Interactive scale position playback and loops
  • CAGED system chord shape display
  • Adjustable playback speed and count-in
  • Note highlighting for learning
Read full description

Guitar Scales Power will help guitar players at any level learn many of the most commonly used scales and modes. Stay in tune with the tuner and enhance your playing skills by mastering scale positions in any key. Practice playing with scale position loops to perfect the position and build muscle memory. Learning scales will boost your finger dexterity and ability to improvise. Start slowly and increase speed as you progress. Play scales by swiping across guitar strings; the direction of the swipe determines ascending or descending playback. Play scale position loops by tapping the play loop button. Tap on a note to play it. Scale positions correspond to the CAGED system, which consists of five patterns that cover the fretboard for each scale. The chord shape for each position is displayed to assist you in learning it in any key. The tuner offers a chromatic mode or the option to select from various tunings. The tuner and instruments use an adjustable reference frequency, set to 410 Hz - 470 Hz (default A = 440 Hz). FEATURES: • Easy-to-use scale reference with excellent sound quality. • Accurate chromatic tuner. • Display and playback of scale positions covering the fretboard. • Scale notes display letter, interval, and fingering. • Displays CAGED system chord shapes for scale positions. • Playback of scales - full position or one octave. • Adjustable scale playback speed (position and position loop). • Count-in option before scale playback. • Notes highlight as played to aid in learning. • Scale playback instruments: Guitar and Acoustic Guitar. • Adjustable reference frequency for tuner and playback. • Tap on a note to play it. • Guitar fretboard display (vertical or horizontal). • Right or left-handed guitar display. • Supports alternative tunings. • iPhone - zoom in/out to see the complete fretboard. • Universal app – use on iPhone, iPod touch, or iPad. • Everything included - no in-app purchases! INCLUDED SCALES: Pentatonic etc: Major Pentatonic, Minor Pentatonic, Blues and Major Blues Major Scale Modes: Ionian (Major), Dorian, Phrygian, Lydian, Mixolydian, Aeolian (Relative Minor) and Locrian Minor Scales: Harmonic Minor, Melodic Minor Ascending (Jazz Minor) and Relative Minor (Natural Minor or Aeolian Mode) Symmetrical Scales: Chromatic TUNINGS: Standard, Std. Half Step Down, Std. Full Step Down, Drop D and Open G

About

Guitar Tuner EM

This free app helps you tune your guitar perfectly with automatic string detection and various note naming schemes. It offers over 30 alternate tunings and provides chord fingerings for quick reference, making it ideal for both beginners and experienced players.

Highlights
  • Automatic string detection
  • Multiple note naming schemes
  • Adjustable tuning parameters
  • 30+ alternate guitar tunings
  • Chord fingerings and string tones
  • Hear tuning sounds
Features
Read full description

Features of the app: • Various note naming schemes: English (CDEFGAB), German (CDEFGAH), Latin (DoReMiFa...). • Adjustable reference note frequency (A440), algorithm sensitivity, and tolerance (in cents). • Easy to use for both beginners and experts. • Tune each string of your guitar. • Automatic detection of tuned strings. • Hear the actual tuning sound by clicking on the note name. • Use one of the 30+ built-in alternate guitar tunings (Open, Dropped, Double Dropped, Minors, Fourths...) Click on the note name to hear the actual string sound. This way you can tune your guitar by ear, switch back to automatic mode and then check how good your ears are. This guitar tuner app has very simple user graphics and smooth controls which makes this app really easy to use. There is no training required to start using this guitar tuning app. You can switch between multiple tuning modes. You can tune your guitar perfectly for all sound notes. Whether you want to tune your own guitar or help your friends tune their guitars, this guitar tuning app becomes really useful as it fits in your smartphone and is really easy to use. And it is free to download and use. Most common chords with fingerings and string tones as quick reference. This Guitar Tuner app is a perfect tool for both beginners and professional guitarists. The app is very easy to use and helps to tune your guitar with the same string sounds as the sound in the app. By making use of this tuner app, you can get awesome sound quality and an effective way to adjust strings according to your acoustic guitar.

Screenshots

Guitar Scales Power4 screens
Guitar Tuner EM4 screens

Verdict

The call

The clearest difference is review sentiment: Guitar Scales Power at 91% against Guitar Tuner EM's 40%. Guitar Scales Power also leads on rating (4.6 vs 3.5) and in-app purchases (none vs 1). Guitar Tuner EM's advantage is iOS requirement (12.0 vs 14.5). On price, update cadence, ads and monetization model 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

Both are free to download. Guitar Tuner EM sells 1 one-off in-app purchase. Guitar Scales Power asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Guitar Scales Power holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: Guitar Scales Power has 77 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 91% of Guitar Scales Power's written reviews are positive against 40% of Guitar Tuner EM's.

UpkeepUpdate frequency

Guitar Scales Power ships an update every 4 months, Guitar Tuner EM every 3 months. Both last shipped on September 8, 2026.

Scorecard5 real differences · 5 level
Guitar Scales Power versus Guitar Tuner EM: the parameters behind the verdict, then further details
ParameterGuitar Scales PowerGuitar Tuner EM
PriceFreeFree
Rating4.6 (77 ratings) — better3.5 (8 ratings)
Positive reviews91.0% of reviews — better40.0% of reviews
Number of ratings77 — better8
Update frequencyEvery 4 monthsEvery 3 months — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.512.0 — better
Further details — not scored
Size33 MB16 MB
Age rating4+4+
DeveloperThomas GuntermyrApps

Customer experience

Guitar Scales Power

All ratings77 ratings
Positive90.9%
Neutral3.9%
Negative5.2%
Written reviews111 reviews
Positive91.0%
Neutral1.8%
Negative7.2%

Guitar Tuner EM

All ratings8 ratings
Positive62.5%
Neutral0.0%
Negative37.5%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

Bugs and requests

Guitar Scales Power

Reported bugs

9 issues
  • App crashes frequently
  • App stuck in landscape mode
  • Cannot move view up and down fretboard
  • Ad bar covers fretboard
  • Fretboard in wrong direction (vertical)
Show 4 more
  • App not recognizing songs from Apple Music
  • Cannot hear sounds when touching frets
  • Login screen freezes
  • Incompatible with older devices

Requested features

12 requests
  • Add bass and other stringed instruments
  • Include a print function
  • Add more drop tunings
  • Add a metronome with play-along function
  • Add Arpeggios and natural minor scale
Show 7 more
  • Add modal scales on harmonic and melodic minor
  • Option to toggle extra info
  • Color code 3rd and 5th notes
  • Add practice sequences or custom entry
  • Allow transposing to new tuning
  • Flip fretboard horizontally
  • Dark mode option

Guitar Tuner EM

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Guitar Scales Power

No in-app purchases

1 purchases

Guitar Tuner EM

One-time1
  • Tuner Premium Upgrade$3.99

Questions

Is Guitar Scales Power free?
Guitar Scales Power is free to download, with no in-app purchases.
Is Guitar Tuner EM free?
Guitar Tuner EM is free to download, with in-app purchases available.
Which has better reviews, Guitar Scales Power or Guitar Tuner EM?
Guitar Scales Power is rated higher. Guitar Scales Power averages 4.6 out of 5 from 77 ratings, while Guitar Tuner EM averages 3.5 from 8 ratings.
Do Guitar Scales Power or Guitar Tuner EM have ads?
Both Guitar Scales Power and Guitar Tuner EM show ads.
Which is updated more often, Guitar Scales Power or Guitar Tuner EM?
Guitar Scales Power ships an update every 4 months, and Guitar Tuner EM every 3 months. Most recently, Guitar Scales Power was updated on September 8, 2026 and Guitar Tuner EM on September 8, 2026.

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