Scythe Synthesizer vs DubFilter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Scythe Synthesizer
Design new sounds with an intuitive interface on your iPad. This synthesizer offers a wide range of sonic possibilities, from classic analog tones to unique digital effects. Record and export your creations easily.
- Intuitive sound design interface
- Versatile oscillators (analog & digital)
- Audio clip recording and export
- Extensive modulation
- Wide range of effects
- MIDI support
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Scythe is a MIDI synthesizer for iPad and Mac built for fast, hands-on sound design. Shape analog and digital waveforms, explore deep modulation, save custom presets, and record and share clips without leaving the app. Scythe makes it easy to move from happy accidents to playable sounds fast. Features: • Fast, tactile sound design with the bend workflow • Analog and digital waveforms • Deep modulation and filter shaping • Delay, chorus, phaser, and bitcrusher effects • Factory presets plus your own saved presets • Record, copy, trim, and share audio clips • Core MIDI support as both controller and sound module • Designed for iPad, also available on Mac
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 price: DubFilter at Free against Scythe Synthesizer's $4.99. DubFilter also leads on iOS requirement (17.0 vs 26.0). Scythe Synthesizer's advantage is in-app purchases (none vs 1). On rating, review sentiment, ratings volume and update cadence 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
DubFilter is free to download; Scythe Synthesizer costs $4.99 up front. DubFilter sells 1 one-off in-app purchase. Scythe Synthesizer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Scythe Synthesizer against 4.7 for DubFilter. Both are backed by a comparable volume of ratings — 134 and 71 respectively. Written reviews are what separate them: 77% of Scythe Synthesizer's written reviews are positive against 73% of DubFilter's.
Scythe Synthesizer ships an update every 4 months, DubFilter every 6 months. Both last shipped on November 1, 2026.
| Parameter | Scythe Synthesizer | DubFilter |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.6 (134 ratings) | 4.7 (71 ratings) — better |
| Positive reviews | 77.3% of reviews — better | 73.3% of reviews |
| Number of ratings | 134 — better | 71 |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Miles Egan | Amazing Noises |
Customer experience
Scythe Synthesizer
DubFilter
Bugs and requests
Scythe Synthesizer
Reported bugs
11 issues- Doesn't load AUM after update, crashes
- Crackle on iPad Pro
- Unintended distortion, glitched artifacts on iPad Pro
- Confirming distortion on every patch on iPad Pro 11 inch
- Bad digital distortion on iPad Pro 11 inch
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- Weird delay on lower portion of keyboard keys
- Triggered keyboard sizing while playing with multiple fingers
- Presets don't save half the time
- Preset sounds nothing like when working on it
- Stopped sound output, dies permanently after switching apps
- Certain patches distort quite a bit after update
Requested features
14 requests- Ability to choose MIDI channel
- Controllable randomization range
- More presets
- Bend modulation to loop
- Bend to be tempo synced
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- Randomize effects section
- Backward compatibility with older iOS
- Ability to rename/save presets with custom names
- Key/note hold feature
- CoreMIDI support (historically)
- Preset sharing
- Continuum (scale) controller
- Bend feature to loop back into itself
- Bends to be voiced for each new key stroke
DubFilter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Scythe Synthesizer
No in-app purchases
DubFilter
- Audio Unit Plugin Support$1.99
