# NLogSynth PRO vs Scales Lexicon

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.

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.

## The numbers

| Metric | NLogSynth PRO | Scales Lexicon |
| --- | --- | --- |
| Price | $8.99 | **$2.99** |
| Rating | [4.6 (33 ratings)](https://appshunter.io/ios/app/nlogsynth-pro/id393879841/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/scales-lexicon/id418528535/reviews)** |
| Number of ratings | **33** | 5 |
| Positive reviews | 83.1% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 24 months |
| Monetization | Paid | Paid |
| Size | 25 MB | 40 MB |
| Requires iOS | **13.0** | 26.5 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [tempo rubato](https://appshunter.io/developer/293530910) | [Patrick Q. Kelly](https://appshunter.io/developer/310068987) |

## What reviewers say

### NLogSynth PRO

[App page](https://appshunter.io/ios/app/nlogsynth-pro/id393879841)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Scales Lexicon

[App page](https://appshunter.io/ios/app/scales-lexicon/id418528535)

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.

**Highlights:** 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

**In-app purchases:** none


## Frequently asked questions

### Is NLogSynth PRO free?

NLogSynth PRO costs $8.99, with no in-app purchases.

### Is Scales Lexicon free?

Scales Lexicon costs $2.99, with no in-app purchases.

### Which has better reviews, NLogSynth PRO or Scales Lexicon?

Scales Lexicon is rated higher. NLogSynth PRO averages 4.6 out of 5 from 33 ratings, while Scales Lexicon averages 5.0 from 5 ratings.

### Do NLogSynth PRO or Scales Lexicon have ads?

Neither NLogSynth PRO nor Scales Lexicon shows ads.

### Which is updated more often, NLogSynth PRO or Scales Lexicon?

NLogSynth PRO ships an update every 2 months, and Scales Lexicon every 24 months. Most recently, NLogSynth PRO was updated on October 1, 2026 and Scales Lexicon on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*