# SpaceTheremin vs DubFilter

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.

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 18, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | SpaceTheremin | DubFilter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/spacetheremin/id884417701/reviews)** | [4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews) |
| Number of ratings | 4 | **71** |
| Positive reviews | **100.0% of reviews** | 73.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 12 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YUKIO ONOZUKA](https://appshunter.io/developer/876684692) | [Amazing Noises](https://appshunter.io/developer/903336421) |

## What reviewers say

### SpaceTheremin

[App page](https://appshunter.io/ios/app/spacetheremin/id884417701)

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.

**Highlights:** 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

**In-app purchases:** none


### DubFilter

[App page](https://appshunter.io/ios/app/dubfilter/id979648058)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Unit Plugin Support | $1.99 | one-time |


## Frequently asked questions

### Is SpaceTheremin free?

SpaceTheremin is free to download, with no in-app purchases.

### Is DubFilter free?

DubFilter is free to download, with in-app purchases available.

### Which has better reviews, SpaceTheremin or DubFilter?

SpaceTheremin is rated higher. SpaceTheremin averages 4.8 out of 5 from 4 ratings, while DubFilter averages 4.7 from 71 ratings.

### Do SpaceTheremin or DubFilter have ads?

Neither SpaceTheremin nor DubFilter shows ads.

### Which is updated more often, SpaceTheremin or DubFilter?

SpaceTheremin ships an update every 2 months, and DubFilter every 6 months. Most recently, SpaceTheremin was updated on September 18, 2026 and DubFilter on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*