Quantum Sequencer vs Wobulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quantum Sequencer
This app offers an interactive approach to music composition, focusing on detailed steps that can be arranged into looping sequences. It provides extensive control over note parameters and allows for real-time manipulation and experimentation.
- Interactive step-focused composition
- Detailed step notation (probability, ornamentation)
- Configurable sequence lengths and sub-sequences
- 16 general faders for parameter editing
- MIDI learnable faders
- Programmable loop actions
- Per-sequence MIDI FX, devices, and controllers
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Quantum is a performance midi sequencer which approaches music composition with an interactive creation processes - sometimes referred to as 'noodling'. Where pattern or piano-role sequencers are good for music forms (intro/verse/chorus etc) or grid entry, Quantum's approach is built around the idea of a step being the focus - think of the step as a single note or chord written on a music sheet then add a lot of extra notation (like probability of playing or ornamentation say). These highly detailed steps are then aligned into sequences (think melodies) that loop. You can have any length up to 64, but these can be further split into 4 sub-sequences that have their own set of sequencer parameters (like tempo, play direction, transpose etc). To enter step parameters such as note pitch, velocity, gated length etc, 16 general faders are available which allow you to draw, drag, select copy/paste, inc/dec & link together to edit values. These are also midi learnable (midi cc or nrpn) to allow you to use control surfaces or midi controllers. To aid you with faster control Quantum has loop actions which you can program in to carry out tasks when a sequence loops - e.g. transpose, randomise, start or load another sequence etc. With up to 24 sequences playing Quantum introduces a mixer page allowing you to blend midi velocities. Built on the MidiSequencer engine, midi FX, devices & Controllers are now possible per sequence. So why would Quantum be good for your setup? There are many midi enabled IOS & hardware synths that produce exotic timbres if you send them fast & varied midi controls that you just would not hear with keyboard playing or slow tempo tunes. Also, Quantum, embraces experimentation in melody creation and by copy/pasting allowing quick setup of arpeggios & counterpoint tunes that you can create & manipulate on the fly! note : This app sends midi information - you need to use it in conjunction with any midi enabled iOS synth app (e.g. Sunrizer) to hear sounds
Wobulator
This audio effect plugin provides a stereo chorus with a unique "wobble" feature for a less predictable modulation. It can be used standalone or within compatible music production applications.
- Stereo chorus/modulation effect
- Adjustable delay time (10-100ms)
- Variable modulation rate (0.01-2.00Hz)
- "Wobble" parameter for unpredictable modulation
- Adjustable dry/wet mix
- AUv3 compatible plugin
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Wobulator Modulator Plugin (AUv3) Wobulator is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic or GarageBand. Overview Wobulator is a stereo chorus / modulation effect with a wobbly twist! The chorus effect is typically achieved by modulating the time of a delayed version of the dry signal, and mixing the two. Typically, these delay times are very short, around 20ms. Wobulator includes a "Wobble" parameter that adds variation to both the rate and depth, which makes the modulation cycle less obvious to the listener. Parameters Active - Toggles the effect On or Off. Delay - Varies the base delay time between 10-100ms. Higher delay times can be used to create ADT (automatic double tracking) type effects. Rate - Sets the base modulation LFO frequency between 0.01 and 2.00Hz. Depth - Sets the amount of base delay modulation. For example, a 50ms Delay, with 50% Depth, will be modulated between 25 and 50ms. Wobble - Sets the amount of variation introduced by an internal wobulation matrix! At extreme settings the unpredictable nature of the resulting modulation can sound almost tape-like. When Wobble is set to zero, Wobulator behaves like a standard chorus effect. Mix - Sets the balance between the dry / input signal and the wet / processed sound. At 50%, the mix is an equal amount of dry and wet. At 100%, you hear the wet / processed sound only, which is good for wobbly tape effects! If the name sounds familiar, Wobulator is an updated version of the WOBULATER module developed for Voltage Modular by Waverley Instruments. For more info and support please visit: www.waverley-instruments.com/robjackson
Screenshots
Verdict
The clearest difference is update cadence: Wobulator at every 2 days against Quantum Sequencer's every 6 weeks. Wobulator also leads on rating (5.0 vs 4.6) and price ($1.99 vs $7.99). Quantum Sequencer's advantage is ratings volume (35 vs 6). On ads, in-app purchases, monetization model and device support 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
Quantum Sequencer costs $7.99 and Wobulator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Wobulator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Quantum Sequencer has 35 ratings behind it against 6, so its average is the more settled of the two.
Quantum Sequencer ships an update every 6 weeks, Wobulator every 2 days. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.
| Parameter | Quantum Sequencer | Wobulator |
|---|---|---|
| Price | $7.99 | $1.99 — better |
| Rating | 4.6 (35 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 68.8% of reviews | — |
| Number of ratings | 35 — better | 6 |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 191 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | anthony saunders | Rob Jackson |
Customer experience
Quantum Sequencer
Wobulator
In-app purchases
Quantum Sequencer
No in-app purchases
Wobulator
No in-app purchases









