LH Rubbing vs UNO Synth Editor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LH Rubbing
This app is a polyphonic synthesizer for iPad, offering rich analog-style sounds. It features multiple oscillators, LFOs, and an ADSR envelope for sound shaping. A unique keyboard rubbing feature allows for direct vibrato control.
- Polyphonic analog-style synthesis
- Multiple waveform and noise oscillators
- Dual LFO modulation
- Multimode filter (low-pass, high-pass, band-pass)
- ADSR envelope generator
- Keyboard Rubbing vibrato control
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LH Rubbing is a polyphonic synthesizer app for iPad, delivering rich analog-style sounds. It features three waveform oscillators, one noise oscillator, two LFOs, and a multimode filter with three modes: low-pass, high-pass, and band-pass. Each waveform oscillator offers three waveforms: triangle, square, and sawtooth. The LFOs can modulate various parameters, including oscillator pitch, pulse width, filter cutoff frequency, filter resonance, and oscillator output mixing. The second LFO can modulate the frequency and amplitude of the first LFO. Pitch, filter cutoff frequency, and resonance can also be controlled by the ADSR envelope generator. The unique Keyboard Rubbing feature lets you create vibrato directly from the keyboard, controlling both its rate and depth.
UNO Synth Editor
This app provides advanced control for a specific analog synthesizer, allowing users to manage presets, shape sounds, and configure global and MIDI settings. It offers access to all synth engine elements and includes artist-created presets for inspiration.
- Preset management and transfer
- Full control over synth engine
- Sound shaping with envelopes and LFOs
- Arpeggiator and keyboard controls
- Global and MIDI settings configuration
- Artist preset library
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**New: Librarian feature & Artist Presets** UNO Synth Editor’s Presets tab lets you easily manage presets and transfer them between your Mac/PC/iOS device and UNO Synth. Browse, audition and search, arrange presets into custom categories, and easily add and re-order presets on UNO Synth itself. And bulk transfer makes it easy to quickly prepare the Synth for performances. UNO Synth Editor also now offers presets from VIP artists like Synthmania, HaQ AttaQ and more, covering a wealth of styles and genres to inspire your creativity. UNO Synth Editor is the companion app for IK’s UNO Synth. Easily access and control all the aspects of this powerful analog synthesizer from your iPhone or iPad while UNO Synth is connected. UNO Synth Editor gives you enhanced access to every element of the synth engine for massive sound-shaping potential. Adjust continuously variable waveshapes and pulse-width modulation, and use full access to the Attack, Decay, Sustain and Release controls of both the filter and amplitude envelopes for even more in-depth sound design. Arpeggiator and keyboard controls help you prep for live shows. Lastly, UNO Synth Editor gives you control over the hardware unit’s global and MIDI settings, making it easier to configure UNO Synth for more complex setups and rigs. Features: • Powerful editor for use with IK’s UNO Synth analog synthesizer • Full control over all features of the hardware unit • Instant access to full Attack, Decay, Sustain, and Release filter controls • Adjust settings for Live effects like Vibrato, Tremolo, and Wah • Full 88-key keyboard for easier programming of arpeggios and sequences • Pitch and mod wheels for more dynamic control of your playing • Advanced access to the on-board Arpeggiator • New librarian tab to sort & categorize presets & transfer between UNO and the app • Global and MIDI controls for faster setup of advanced configurations Requires UNO Synth with firmware version 1.1. Firmware updater can be downloaded from www.ikmultimedia.com/userarea after registration of the unit.
Screenshots
Verdict
The clearest difference is review sentiment: LH Rubbing at 77% against UNO Synth Editor's 33%. LH Rubbing also leads on rating (4.2 vs 3.8). UNO Synth Editor's advantage is update cadence (every 9 months vs every 43 months) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
LH Rubbing holds the better App Store score, 4.2 against 3.8. Both are backed by a comparable volume of ratings — 19 and 12 respectively. Written reviews point the same way: 77% of LH Rubbing's written reviews are positive against 33% of UNO Synth Editor's.
LH Rubbing ships an update every 43 months, UNO Synth Editor every 9 months. Both last shipped on November 13, 2026.
| Parameter | LH Rubbing | UNO Synth Editor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (19 ratings) — better | 3.8 (12 ratings) |
| Positive reviews | 76.9% of reviews — better | 33.3% of reviews |
| Number of ratings | 19 — better | 12 |
| Update frequency | Every 43 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15 | 9.3 — better |
| Further details — not scored | ||
| Size | 11 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 昊 刘 | IK Multimedia US, LLC |
Customer experience
LH Rubbing
UNO Synth Editor
In-app purchases
LH Rubbing
No in-app purchases
UNO Synth Editor
No in-app purchases








