SpaceTheremin vs DubFilter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpaceTheremin
Create unique soundscapes by touching and moving your screen to control pitch and cosmic delay effects. Explore various wave shapes and warp options to craft your sonic experience. This app offers a free version with limited multi-touch and a pro version for an ad-free, expanded experience.
- Touch and move screen for pitch control
- Cosmic delay sounds
- Multi-touch support (2 free, more in pro)
- Adjustable delay time and feedback
- Multiple wave shapes (Sine, Saw, Square, Triangle, Noise)
- Warp and Softness controls
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Spacey Theremin Instruments app. Touch&move screen, will change pitch and Cosmic Delay Sounds!! Multi-touch free:2, pro:more than 2 Pro Version is No ad. Shake phone, put menu at menu->setting Delay On/Off Time Feedback Wave Sine Saw Square Triangle Noise Warp On/Off Softness Volume
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 in-app purchases: SpaceTheremin at none against DubFilter's 1. SpaceTheremin also leads on review sentiment (100% vs 73%) and update cadence (every 2 months vs every 6 months). DubFilter's advantage is ratings volume (71 vs 4). On price, rating, 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. SpaceTheremin asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for SpaceTheremin against 4.7 for DubFilter. That said, the two scores are not equally well evidenced: DubFilter has 71 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 100% of SpaceTheremin's written reviews are positive against 73% of DubFilter's.
SpaceTheremin ships an update every 2 months, DubFilter every 6 months. The most recent releases landed on September 4, 2026 and September 22, 2026 respectively.
| Parameter | SpaceTheremin | DubFilter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | 4.7 (71 ratings) |
| Positive reviews | 100.0% of reviews — better | 73.3% of reviews |
| Number of ratings | 4 | 71 — better |
| Update frequency | Every 2 months — better | Every 6 months |
| 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 | 6.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | YUKIO ONOZUKA | Amazing Noises |
Customer experience
SpaceTheremin
DubFilter
In-app purchases
SpaceTheremin
No in-app purchases
DubFilter
- Audio Unit Plugin Support$1.99
Questions
Is SpaceTheremin free?
Is DubFilter free?
Which has better reviews, SpaceTheremin or DubFilter?
Do SpaceTheremin or DubFilter have ads?
Which is updated more often, SpaceTheremin or DubFilter?
Other comparisons
