dspMixFx vs DubFilter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
dspMixFx
This app provides latency-free monitoring and control of DSP features for compatible Yamaha audio interfaces on iOS devices. It enables access to effects like REV-X reverb and Guitar Amp Classics, enhancing your audio production workflow.
- Control DSP mixer and effects
- Latency-free monitoring
- REV-X reverb
- Sweet Spot Morphing Channel Strip
- Guitar Amp Classics
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Together with the UR-RT2, UR-RT4, UR242, UR44, UR28M and UR824 audio interfaces, the dspMixFx app allows you to utilize the benefits of Yamaha’s custom-designed SSP2 DSP chip directly on your iPad and iPhone. The dspMixFx app is free of charge, providing latency-free monitoring while running the highly acclaimed REV-X reverb, the Sweet Spot Morphing Channel Strip and Guitar Amp Classics with other iOS audio apps. Please note that this app is only a control application for Steinberg’s USB audio interfaces UR-RT2, UR-RT4, UR242, UR44, UR28M and UR824. Without a UR interface it can be used in demo mode only. Find more information about the UR audio interfaces at: http://www.steinberg.net/en/products/audio_interfaces/ur_series Find more information about the UR-RT audio interfaces at: http://www.steinberg.net/en/products/audio_interfaces/ur-rt_series Make sure to download and install the firmware update version 2.10 first for UR44, UR28M and UR824 to enable the UR interface to run together with the dspMixFx app. You can find the firmware update at: http://www.steinberg.net/en/support/downloads Key features • Control of all DSP features like DSP mixer and DSP effects • No-latency DSP-powered monitoring with the iPad and iPhone • Works with UR-RT2, UR-RT4, UR242, UR44, UR28M and UR824* * Units need to be switched to class compliant mode to run with the iPad via the iPad Camera Connection Kit, the Lightning to USB Camera Adapter or the Lightning to USB 3 Camera Adapter. In CC mode Loopback capability is disabled and only the analog inputs and outputs are available on UR28M and UR824.
DubFilter
This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.
- Dual low-pass/high-pass filter
- Resonance and Overlap parameter
- Stereo sample player with LFO
- Scrubbing capabilities
- Audiobus and Inter-App Audio support
- MIDI control and file management
- Preset morphing pad
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The Dub Filter is a dual low-pass/high-pass 24/48 dB filter, with resonance and the exclusive Overlap parameter! It contains a completely redesigned stereo sample player with LFO and scrubbing capabilities. Main Features: - Audiobus and Inter-App Audio support (sender and FX) - State Variable Filter (Low-Pass and High-Pass) with resonance and overlap - Built In Stereo Sampler with varispeed and scrubbing - Control Manager LFO for all the Parameters - Midibus, Virtual Midi and Network: 14 bit NRPN controllers - File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy - Snapshots Presets Morphing Pad - Post Fx Chain: Low-shelf Filter, High-shelf and Compressor
Screenshots
Verdict
The clearest difference is review sentiment: DubFilter at 73% against dspMixFx's 29%. DubFilter also leads on rating (4.7 vs 3.7) and ratings volume (71 vs 9). dspMixFx's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 17.0). On price, update cadence, ads 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
Both are free to download. DubFilter sells 1 one-off in-app purchase. dspMixFx asks for nothing beyond the download.
DubFilter holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: DubFilter has 71 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 29% of dspMixFx's written reviews are positive against 73% of DubFilter's.
dspMixFx ships an update every 11 months, DubFilter every 6 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.
| Parameter | dspMixFx | DubFilter |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (9 ratings) | 4.7 (71 ratings) — better |
| Positive reviews | 29.2% of reviews | 73.3% of reviews — better |
| Number of ratings | 9 | 71 — better |
| Update frequency | Every 11 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 53 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Steinberg Media Technologies GmbH | Amazing Noises |
Customer experience
dspMixFx
DubFilter
In-app purchases
dspMixFx
No in-app purchases
DubFilter
- Audio Unit Plugin Support$1.99







