Scales Lexicon vs Oud Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Scales Lexicon
This app provides a comprehensive library of musical scales with detailed notation and playback. It allows for transposition across various instruments and clefs, offering customizable rhythmic patterns and playback options. Users can generate printable PDF scores for practice and sharing.
- Over 100 musical scales
- Interactive notation and playback
- Transposition for multiple instruments
- Customizable rhythmic patterns
- PDF score generation
- Multiple octaves and playback modes
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Over 100 scales notated and played for you, including note names diatonic and melodic intervals. Transposition for instruments in Ab, Eb, Bb, F, C, G, D, A, and E. Play along! Create a pdf of the notation and piano key markings for sharing or printing. Listen and watch the notes and piano keys highlight as it plays. Notation in treble, alto, tenor or bass clef. See the scale notated correctly, with double sharps and flats as needed. For example, Gb minor has a B double flat, not an A. Concert key signatures are supported to the common seven sharps or flats. Transposing key signatures can contain twelve sharps or flats or if selected, use the preferred enharmonic equivalent. Have the scale played in a wide variety of ways. • Choose from 11 rhythmic patterns. • Choose 1, 2 or 3 octaves. • Loop continuously, or play just once through. • Select the space between each loop. • Choose if you want the scale played up, up and down, down, or down and up. • Includes an optional 2 or 4 beat count-off. Drive your own software or hardware synth via MIDI to hear what you want, or use the app's own acoustic piano. A quick and easy reference tool for practicing your instrument. Broaden your knowledge and technique. Included scales: • Common: Major Natural Minor Harmonic Minor Melodic Minor - Up & Down Whole-Half Diminished Half-Whole Diminished Whole-tone Chromatic • Modes: Ionian Dorian Phrygian Lydian Mixolydian Aeolian Locrian • Jazz: Major Pentatonic Minor Pentatonic Blues Blues Modified Blues Phrygian Blues Diminished Bebop Bebop Major Bebop Dominant Bebop Minor Bebop Minor 2 Harmonic Major Phrygian Dominant Lydian Dominant (Overtone) Lydian Augmented Augmented Half Diminished 1 Half Diminished 2 Diminished Whole Tone 6th Mode of Harmonic Minor Neapolitan Major Neapolitan Minor Harmonic Neapolitan Minor Prometheus • Hindustani Thaats: Bilawal Kalyan Khamaj Bhairav Poorvi Marwa Kafi Asavari Bhairavi Todi • World: Algerian Arabian Byzantine Hawaiian Hindu Hungarian or Egyptian Indian Indian Minor Jewish or Spanish Oriental Persian Romanian Bocovia Romanian Major Romanian Minor • China: Bi Yu Chaio Kung Youlan • Japan: Han-kumoi Hira-joshi Honchoshi Plagal Form Iwato Kokin-joshi, Miyakobushi Nohkan Ritsu Sakura Pentatonic Sansagari Taishikicho, Ryo • Composers: Prokofiev Scriabin Shostakovich Verdi Enigmatic Verdi Enigmatic - Up & Down • Messiaen Modes: Mode 1 - Whole Tone Mode 2 - Half-Whole Diminished Mode 3 Mode 3 Inverse Mode 4 Mode 4 Inverse Mode 5 Mode 5 Inverse Mode 6 Mode 6 Inverse Mode 7 Mode 7 Inverse Truncated Mode 2 Truncated Mode 3 Truncated Mode 3 Inverse Truncated Mode 5 Truncated Mode 5 Inverse Truncated Mode 6 Truncated Mode 6 Inverse
Oud Pro
Experience the authentic sound of the Turkish and Arabic oud on your iPhone. This app offers a realistic playing experience with studio-recorded sound effects, allowing you to play traditional Turkish and Arabic maqams. Enjoy an easy-to-use and high-quality virtual instrument.
- Realistic oud playing experience
- Studio-recorded sound effects
- Play Turkish and Arabic maqams
- Easy to use interface
- High-quality design
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Experience the feel of a real oud on your iPhone. Oud is a realistic virtual instrument designed for Turkish, Middle Eastern and maqam-based music, with precise microtonal control and expressive multi-touch performance. Its sound library is built from detailed, professionally recorded samples of a real oud, capturing the instrument’s natural tone, character and subtle nuances for a more authentic playing experience. Choose from preset maqams or fine-tune individual notes to create your own tuning system. Save your custom maqams and recall them instantly whenever you want to play. Key Features: High-quality detailed samples recorded from a real oud Natural and authentic oud tone Realistic oud-inspired playing experience Multi-touch performance Precise microtonal tuning Independent microtone control for each note Preset maqams including Rast, Hijaz, Ussak, Nihavent and more Create and save your own maqams Instant maqam selection Pitch Bend control Reverb control Performance-focused controls for quick access Authentic oud-inspired instrument interface Play traditional maqams or create your own microtonal setup. With a detailed sound library recorded from a real oud, the app delivers an expressive and natural instrument experience directly on your iPhone. Take your oud wherever you go.
Screenshots
Verdict
The clearest difference is rating: Scales Lexicon at 4.8 against Oud Pro's 3.0. Scales Lexicon also leads on review sentiment (86% vs 48%) and in-app purchases (none vs 1). Oud Pro's advantage is price ($0.99 vs $2.99) and iOS requirement (17.6 vs 26.5). On ratings volume, 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
Scales Lexicon costs $2.99 and Oud Pro $0.99 up front. Oud Pro sells 1 one-off in-app purchase. Scales Lexicon asks for nothing beyond the download.
Scales Lexicon holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 6 and 17 respectively. Written reviews point the same way: 86% of Scales Lexicon's written reviews are positive against 48% of Oud Pro's.
Scales Lexicon ships an update every 19 months, Oud Pro every 33 months. Both last shipped on November 1, 2026.
| Parameter | Scales Lexicon | Oud Pro |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.8 (6 ratings) — better | 3.0 (17 ratings) |
| Positive reviews | 85.7% of reviews — better | 47.6% of reviews |
| Number of ratings | 6 | 17 — better |
| Update frequency | Every 19 months — better | Every 33 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone | iPhone |
| Requires iOS | 26.5 | 17.6 — better |
| Further details — not scored | ||
| Size | 40 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrick Q. Kelly | volkan gumuslu |
Customer experience
Scales Lexicon
Oud Pro
In-app purchases
Scales Lexicon
No in-app purchases
Oud Pro
- 100 lissen credits$0.99









