Comparison

SmartScales vs Guitarr Intervals

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

Head to head
About

SmartScales

This app transforms scale and arpeggio practice into an engaging experience with specially composed backing tracks. It closely aligns with the ABRSM syllabus, offering interactive scores, adjustable tempos, and a built-in metronome. Explore various music styles and practice with looping exercises for instruments like piano, violin, viola, cello, and double bass.

Highlights
  • Interactive scale and arpeggio practice
  • ABRSM syllabus alignment
  • Specially composed backing tracks
  • Adjustable tempo control
  • Looping exercises
  • Built-in metronome
  • Toggleable audio tracks
Features
Read full description

SmartScales makes practising scales and arpeggios interactive and fun! A collaboration between highly experienced music educators and leading music software developers, SmartScales ensures you’ll be making beautiful music thanks to specially-composed backing tracks in a broad range of styles. The graded exercise packs, available as in-app purchases, closely follow the syllabus of the ABRSM, the UK’s largest music education body and the world’s leading provider of music exams. Free content allows you to try exercises in each grade before buying. Content for Piano, Violin, Viola, Cello and Double Bass available today, more instruments coming soon! • Follows the complete ABRSM syllabus*, including all exercise variations • Choice of music styles for every exercise • Fully interactive score follows the music • Adjustable tempo as you build towards ABRSM's suggested playing speed • Loop the exercise so the music goes on while you play • Built-in metronome helps you keep in time • Toggle lead, backing and metronome tracks on and off • Music can be used as jam along tracks * The syllabus on which SmartScales is based is © by The Associated Board of the Royal Schools of Music and is reproduced by permission of the copyright owner.

About

Guitarr Intervals

Features
Read full description

Guitarr Intervals Ear training for intervals. Two notes sound, you name the leap between them. Nine drills, a library of all thirteen intervals, and the guitar neck. Ear Examiner — hear the leap, name it. Same or different — two leaps, one decision. Mix-ups — the pairs that get swapped: minor and major third, fourth and fifth, fifth and tritone. Which is larger — two leaps, pick the bigger one. Chain — three notes, two hops, name both. Inversion — hear the leap, then the way back. Fourth and fifth, third and sixth. Song hooks — which song starts like this? Guitar neck Find on the neck — hear the leap, tap it on the fretboard. Build it — the start is marked, land on the second note. Standard tuning, twelve frets, every position that fits. Library Unison to the octave. The short label (m3, P5, TT), the semitone count, both notes on a treble staff, and a button that plays it. Song hooks 27 songs as memory aids. Jaws for the minor second, Star Wars for the fourth, Twinkle Twinkle for the fifth, Somewhere Over the Rainbow for the octave. The real opening plays, not just two notes. Swap the song for any interval you like. Settings Four levels, from five intervals up to all thirteen. Playback ascending, descending, together, or mixed. Sharps or flats. Also A small home screen widget. XP shared with the other Guitarr apps. 28 languages. Guitarr Intervals Pro Examiner, the library and the fretboard are free. The other eight drills are free three times each, then Pro opens them: EUR 9.99 per year, or EUR 29.99 once for Lifetime. The yearly plan renews until you cancel in Settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://privacy.justbe.works

Screenshots

SmartScales4 screens
Guitarr Intervals4 screens

Verdict

The call

The clearest difference is update cadence: Guitarr Intervals at every 3 weeks against SmartScales's every 5 months. SmartScales's advantage is iOS requirement (15 vs 17.0). On price, 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

Both are free to download. SmartScales sells 17 one-off in-app purchases and Guitarr Intervals sells 2 in-app purchases, starting at $8.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SmartScales ships an update every 5 months, Guitarr Intervals every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
SmartScales versus Guitarr Intervals: the parameters behind the verdict, then further details
ParameterSmartScalesGuitarr Intervals
PriceFreeFree
Rating4.2 (38 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings38 — better—
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better17.0
Further details — not scored
Size13 MB31 MB
Age rating4+4+
DeveloperGreater Heights Media LtdJUSTBE WORKS LTDA

Bugs and requests

SmartScales

Reported bugs

10 issues
  • Cannot delete app from iPad
  • In-app purchase server connection issues
  • App crashes after purchase
  • App crashes after opening
  • Unable to locate in-app purchases
Show 5 more
  • App crashes after 1 second
  • App crashes on iPad
  • App doesn't load
  • App keeps re-downloading
  • Doesn't get past unpacking files screen

Requested features

22 requests
  • Add ABRSM clarinet options
  • Add ABRSM piano syllabus updates
  • Pro version for school use with all grades enabled
  • Search for key signature and browse octaves
  • Add MIDI support
Show 17 more
  • Add guitar as an instrument
  • Add brass instruments
  • Add wind instruments
  • Add band instruments
  • Add classical guitar
  • Add woodwind instruments (clarinet)
  • Add tuba
  • Add more instruments (orchestra)
  • Add tuner
  • Add drone (chord or single tone)
  • Include all three and four scale octaves
  • Offer alternative backing tracks (e.g., piano sound)
  • Check intonation and provide analysis
  • Highlight or change note head color
  • Add fingerings or display pitches
  • Create new rhythm patterns
  • More than 2 note slur option (3,4,6,8)

Guitarr Intervals

Not enough reviews yet to summarise bugs or requests.

In-app purchases

17 purchases

SmartScales

One-time17
  • Cello Grade 1$0.99
  • Violin Grade 1$0.99
  • Piano Grade 1$0.99
Show 14 more
  • Piano Grade 2$1.99
  • Double Bass Grade 3$1.99
  • Violin Grade 5$2.99
  • Viola Grade 5$2.99
  • Violin Grade 7$3.99
  • Cello Grades 1 to 4$4.99
  • Violin Grades 1 to 4$4.99
  • Piano Grades 1 to 4$4.99
  • Double Bass Grade 8$4.99
  • Cello Grades 5 to 8$9.99
  • Violin Grades 5 to 8$9.99
  • Cello Grades 1 to 8$12.99
  • Violin Grades 1 to 8$12.99
  • Viola Grades 1 to 8$12.99
2 purchases

Guitarr Intervals

Subscriptions1
  • Guitarr Intervals Pro Yearly$8.991 Year
One-time1
  • Guitarr Intervals Pro Lifetime$24.99

Questions

Is SmartScales free?
SmartScales is free to download, with in-app purchases available.
Is Guitarr Intervals free?
Guitarr Intervals is free to download, with in-app purchases available.
Do SmartScales or Guitarr Intervals have ads?
Neither SmartScales nor Guitarr Intervals shows ads.
Which is updated more often, SmartScales or Guitarr Intervals?
SmartScales ships an update every 5 months, and Guitarr Intervals every 3 weeks. Most recently, SmartScales was updated on October 29, 2026 and Guitarr Intervals on October 24, 2026.

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