Xequence AU | Keys vs sinusedo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Xequence AU | Keys
This app functions as a versatile MIDI keyboard controller within AUv3 hosts, offering expressive playing modes and customizable controllers. It's designed for music production enthusiasts to enhance their workflow with a responsive and resource-efficient interface.
- Scale-aware single or dual keyboard
- Adjustable key width and glide mode
- Velocity emulation
- Configurable MIDI CC touch ribbons
- Special controller modes (MPE-like)
- AU presets and state saving
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IMPORTANT: This app is targeted at music production enthusiasts and requires an AUv3 Audio Unit Host to run! It does not do ANYTHING on its own! Xequence AU | Keys is a comprehensive and expressive keyboard controller for use inside AU (Audio Unit) hosts like AUM, Cubasis, apeMatrix, etc. It features the same, widely acclaimed keyboard that users of Xequence, our advanced MIDI workstation, have grown to love. HIGHLIGHTS: - Fully scale-aware, very playable single or dual keyboard - Extremely fast and light on resources - Over 70 scales in 10 categories included - Freely adjustable key width - "Glide" mode for triggering keys by sliding between them - Velocity emulation (via vertical position on key) - Automatically adapts to nearly any plugin window size or aspect ratio - Unlimited instances - Full support for AU presets (and state saving / restoration) in the host - Configurable keyboard color and MIDI channel CONTROLLERS: - Any number of MIDI CCs (controllers) can be freely configured and shown as touch ribbons next to the keyboard - A number of standard controller numbers (such as 74 = Cutoff, 7 = Volume etc.) are included and can be set with a single tap SPECIAL CONTROLLER MODES: The following special modes can be set per controller and give an "MPE-like" feel while being compatible with non-MPE synths: - DEVICE ROTATION - controller moves according to device rotation - GATE - controller can be set to a default position, and then tapped anywhere to toggle it to that position and back (think "Trance gates" when used with eg. CC 7 / Volume) - KEY POSITION - controller moves when touching a keyboard key, depending on vertical position - KEY SLIDE - controller moves along when one or more fingers are moved vertically while holding any number of keys - The above modes can also be combined - Note that this is NOT MPE - controllers are always sent for all notes at once, not per individual note! Please report any issues via our website, we provide quick and comprehensive support!
sinusedo
This app is a versatile sinewave synthesizer available as a standalone application and AUv3 plugin. It offers two independent keyboards with extensive control over note parameters, polyphony, and modulation, supporting MIDI input for external control.
- Dual independent keyboards
- Microtonal tuning
- Ring modulator per voice
- Adjustable polyphony (up to 144 voices)
- MIDI input support
- Note deviation display (cents)
- Glide and velocity control
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'sinusedo' is a sinewave synthesizer in standalone and AUv3 formats. It features two independent keyboards with: • 4 – 72 keys (voices, steps) per octave, each with its own ring modulator • maximum polyphony equal to the number of voices; max polyphony is 144 voices • 1 – 4 octave range, covering the frequency range of about 8 – 4200 Hz • display with note number (from C), note name, frequency (in Hz), and deviation from 12-TET (in cents) • two sections per keyboard: upper for non-sustained notes, gliding, and velocity; lower for sustained notes and modulation rate • mute button to stop/start all sound • delete/panic button to erase all notes • glide button for smooth sweeps across keyboard frequency range • modulation on/off button • slider to set initial velocity and modulation levels • slider to change velocity and modulation rates for all notes on the keyboard proportionally and to show current velocity and mod rate levels • button to toggle keyboard visibility. sinusedo supports MIDI input from external sources to control each keyboard independently. Supported devices: iPad, iPhone
Screenshots
Verdict
The clearest difference is update cadence: sinusedo at weekly against Xequence AU | Keys's every 8 months. sinusedo also leads on review sentiment (100% vs 83%). Xequence AU | Keys's advantage is rating (4.9 vs 4.7) and price ($2.99 vs $3.99). On ratings volume, 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
Xequence AU | Keys costs $2.99 and sinusedo $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Xequence AU | Keys holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 19 and 7 respectively. Written reviews complicate that: 83% of Xequence AU | Keys's written reviews are positive against 100% of sinusedo's, so the app with the better star average is not the one people write more warmly about.
Xequence AU | Keys ships an update every 8 months, sinusedo weekly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Xequence AU | Keys | sinusedo |
|---|---|---|
| Price | $2.99 — better | $3.99 |
| Rating | 4.9 (19 ratings) — better | 4.7 (7 ratings) |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 19 — better | 7 |
| Update frequency | Every 8 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 14.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Ewering | Alexey Nadzharov |
Customer experience
Xequence AU | Keys
sinusedo
In-app purchases
Xequence AU | Keys
No in-app purchases
sinusedo
No in-app purchases









