NLogSynth PRO vs Scales Lexicon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NLogSynth PRO
This app is a professional virtual analog synthesizer for iOS, offering a low-latency sound engine with extensive editing capabilities. It supports various inter-app audio and MIDI protocols, allowing for integration with DAWs and external controllers. Create and export custom sounds and recordings with studio-quality audio.
- Virtual analog low-latency sound engine
- Extensive sound editing with over 150 parameters
- Support for AudioUnit v3, AudioBus 3, Inter-App Audio
- Full MIDI implementation and Core MIDI compatibility
- Studio quality 44.1 kHz Stereo CD quality audio
- 224 factory sounds and user banks
- Multi-effect section with delay, chorus, reverb, and more
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Professional Virtual Analogue Synthesizer supporting AudioUnit v3, AudioBus 3, Inter-App Audio and Core MIDI compatible apps & interfaces. Versatile iOS synth with professional grade virtual analogue low latency sound engine: - Play it from on-screen keyboard - Use MIDI keyboards & controllers via MIDI interfaces - Connect to your digital audio workstation via MIDI interfaces - Play NLogSynth from other iOS apps using virtual Core MIDI - Synchronize NLog via MIDI Clock to other apps or devices - Make audio or MIDI recordings on the run and share your files - Export patches & recordings Supports external MIDI input and output via CoreMIDI compatible interfaces and class compliant USB MIDI interfaces. Full MIDI implementation including velocity control, pitch bend, sustain pedal, modulation wheel, program & bank change, polyphonic after touch, channel pressure and assignable midi controller & MIDI Sync receiving mode. ::: Follow @nlogmusic at Twitter! ::: ::: Featured in How to Make a Noise: iPad Synthesizers Edition (http://noisesculpture.com/ipad) the most widely read synthesizer book ::: - 224 IMPRESSIVE FACTORY SOUNDS - including fresh new sound set by the producer 7 Skies - ENDLESS options for SOUND EDITING - Over 150 parameters - 3 user banks with 96 slots - STUDIO QUALITY sounds - Professional 44.1 kHz Stereo CD quality - 32bit floating point engine - Highly efficient algorithms - STAGE safe KEYBOARD implementation - SLIDING & LOCK option - Double manual option - POLY, MONO & LEGATO modes - Velocity control - Different key sizes - Fully customizable EXPRESSION CONTROL - Realistic PITCH BEND and MOD WHEEL implementation - X/Y dimensional controller - 4 customizable PERFORMANCE knobs - Keyboard with VERTICAL modulation control - Incredible FAT & RICH: - New filter implementation for SMOOTH and JUICY control with 7 FILTER types - UNISONO mode for up to 4 parallel sounds with detune, delay and panning control === SOUND editing features === - 4 Oscillators with 20 waveforms: - classic analogue SIN, SAWTOOTH, TRIANGLE and SQUARE - 16 additional carefully designed wavetables - True PWM pulse-width modulation - Frequency mod - Ring mod - Noise generator - 2 Filter with 7 filter types - Low, High & Band Passes - Finest sweeps & smoothest cutoff tuning - Carefully resonating - 12 & 24dB option for steepness - 4 ADSR Envelope generators - Velocity controlled attack time - Slope control - 4 Modulation LFOs - Sample & hold - Fade in delay - Modulation Matrix - 4 Modulation slots each modulating 3 destinations - Multi-effect section - Stereo delay with x-feed & filter - chorus - flanger - phaser - distortion - reverb - parametric EQ
Scales Lexicon
This app provides a comprehensive library of musical scales with notation and audio playback. It offers transposition for various instruments and clefs, customizable rhythmic patterns, and the ability to export notation as PDFs. Practice scales with visual feedback on highlighted notes and piano keys.
- Over 100 musical scales
- Audio playback with visual note highlighting
- Transposition for multiple instruments and clefs
- Customizable rhythmic patterns and octaves
- PDF export of notation
- Forward and backward scale playback
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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 forward and backward (up and down), or just forward. • 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
Verdict
The clearest difference is rating: Scales Lexicon at 5.0 against NLogSynth PRO's 4.6. Scales Lexicon also leads on price ($2.99 vs $8.99). NLogSynth PRO's advantage is update cadence (every 2 months vs every 24 months) and ratings volume (33 vs 5). On review sentiment, ads, in-app purchases 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
NLogSynth PRO costs $8.99 and Scales Lexicon $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Scales Lexicon holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: NLogSynth PRO has 33 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 83% of NLogSynth PRO's written reviews are positive against 86% of Scales Lexicon's.
NLogSynth PRO ships an update every 2 months, Scales Lexicon every 24 months. The most recent releases landed on October 1, 2026 and October 23, 2026 respectively.
| Parameter | NLogSynth PRO | Scales Lexicon |
|---|---|---|
| Price | $8.99 | $2.99 — better |
| Rating | 4.6 (33 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 83.1% of reviews | 85.7% of reviews — better |
| Number of ratings | 33 — better | 5 |
| Update frequency | Every 2 months — better | Every 24 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPad |
| Requires iOS | 13.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 25 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | tempo rubato | Patrick Q. Kelly |
Customer experience
NLogSynth PRO
Scales Lexicon
In-app purchases
NLogSynth PRO
No in-app purchases
Scales Lexicon
No in-app purchases
Questions
Is NLogSynth PRO free?
Is Scales Lexicon free?
Which has better reviews, NLogSynth PRO or Scales Lexicon?
Do NLogSynth PRO or Scales Lexicon have ads?
Which is updated more often, NLogSynth PRO or Scales Lexicon?
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