LH Rubbing vs Oscidia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LH Rubbing
This virtual analog synthesizer app for iPad offers a rich, analog sound. It features multiple oscillators, filters, and LFOs for extensive sound shaping. Control pitch, cutoff, and resonance with an ADSR envelope and add vibrato with keyboard interaction.
- Polyphony synthesizer
- Three wave oscillators
- One noise oscillator
- Two LFOs
- Three type embedded filter
- ADSR envelope generator
- Keyboard vibrato control
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LH Rubbing is a polyphony synthesizer app for iPad running on iOS 9.3 or later. It sounds very analog. There are three wave oscillators, one noise oscillator, two LFOs and one three type embedded filter (low-pass, hi-pass and bandpass). Each wave oscillator can generate three kinds of waveform which are triangle, square and saw wave. LFO can be attached to different modul for different modulation or control such as OSC Pitch, PW, Filter Cutoff Frequency, Filter Resonance and OSC Output Mixing. The frequency and amplitude of the 1st LFO can be modified by the 2nd LFO. Pitch, Filter Cutoff Frequency and Resonance can be controlled by the ADSR envelope generator. The Keyboard Rubbing brings up vibrato while control the vibrato rate and depth.
Oscidia
This powerful synthesizer app allows iOS users to create a vast array of sounds using multiple oscillators, wavetable synthesis, and advanced modulation options. It features a versatile sequencer with independent arpeggiators and built-in effects for complex sound design.
- 3 Oscillators Per Voice
- Wavetable & Additive Synthesis
- Morphing & Warping Wavetables
- 5 Morphable Filter Types
- 3 Independent Arpeggiators
- Mod Matrix
- Internal Effects Suite
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Oscidia is an AUv3 plugin for iOS which can be loaded into your favorite DAW allowing you to use it as a sound source for any MIDI source. Its wide range of features and oscillator types allow it to produce a vast variety of sounds. In particular, the inclusion of WaveTable greatly expands the traditional wave types and brings a wealth of modulation options. Oscidia has 3 oscillators per voice, and each oscillator can be a different wavetable – all working and morphing together to create some incredibly amazing sounds. Oscidia includes SINE, SAW, SQUARE, TRIANGLE, SUPERSAW, SUPERSQUARE, WAVETABLE and ADDITIVE wave types. You can import and export compatible wavetables using drag and drop directly to the WaveTable manager. Wavetables support morphing and warping (phase distortion), all controlled by the Mod Matrix routing. The SINE and TRIANGLE wave types both support several wave folding modes which allow dramatic real-time morphing too. Oscidia also supports 5 filter types which support 12/24dB modes and morphable LP/BP/HP filter modes which can be automated from the Mod Matrix or via the Sequencer. The sequencer itself is very unique and allows up to 3 simultaneous ARPs to play at the same time. Each ARP can directly control the 3 oscillator levels independently per step, as well as the pitch, filter morph, cutoff frequency, probability, gate, note repeat and ties. This allows for some really complex rhythms to be created that are not tied to pitch. Oscidia Features: • 3 Oscillators Per Voice. • Support for Wavetable and Additive synthesis. • WaveTable supports Morph and Warp (Phase Distortion) features. • 4 LFOs Per Voice. • 5 Filter types with 12/24-bit slopes and morphable LP/BP/HP. • 4 ADSR (Attack, Decay, Sustain, Release ) or FEG (Fluid Envelope Generators). • Wave Folding is available for basic waveforms such as SINE and TRIANGLE. • OSC Sync. • XMod & Ring Mod (on osc1 & osc2). • Additive Synthesis for glass, metallic and bell like tones. • Build in Sequencer (with 3 independent ARPs). • Mod Matrix. • MPE Mode. • Internal Effects - reverb, delay, chorus, Haas, and Phaser effects. • Drag and Drop for import and export presets and wavetables. • Build in Help Manual.
Screenshots
Verdict
The clearest difference is price: LH Rubbing at Free against Oscidia's $14.99. LH Rubbing also leads on iOS requirement (9.3 vs 13). Oscidia's advantage is rating (5.0 vs 4.2) and update cadence (monthly vs every 26 months). On 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
LH Rubbing is free to download; Oscidia costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Oscidia holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 19 and 11 respectively. Written reviews point the same way: 77% of LH Rubbing's written reviews are positive against 88% of Oscidia's.
LH Rubbing ships an update every 26 months, Oscidia monthly. The most recent releases landed on June 6, 2026 and September 21, 2026 respectively.
| Parameter | LH Rubbing | Oscidia |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 4.2 (19 ratings) | 5.0 (11 ratings) — better |
| Positive reviews | 76.9% of reviews | 87.5% of reviews — better |
| Number of ratings | 19 — better | 11 |
| Update frequency | Every 26 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.3 — better | 13 |
| Further details — not scored | ||
| Size | 12 MB | 168 MB |
| Age rating | 4+ | 4+ |
| Developer | 昊 刘 | 4Pockets.com |
Customer experience
LH Rubbing
Oscidia
In-app purchases
LH Rubbing
No in-app purchases
Oscidia
No in-app purchases









