# Jam Synth vs SpaceTheremin

The clearest difference is in-app purchases: SpaceTheremin at none against Jam Synth's 4. SpaceTheremin also leads on review sentiment (100% vs 84%) and iOS requirement (6.0 vs 12.0). Jam Synth's advantage is rating (5.0 vs 4.8) and ratings volume (28 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Jam Synth sells 4 one-off in-app purchases. SpaceTheremin asks for nothing beyond the download.

Jam Synth holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Jam Synth has 28 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 84% of Jam Synth's written reviews are positive against 100% of SpaceTheremin's, so the app with the better star average is not the one people write more warmly about.

Jam Synth ships an update every 4 months, SpaceTheremin every 2 months. The most recent releases landed on October 6, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Jam Synth | SpaceTheremin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (28 ratings)](https://appshunter.io/ios/app/jam-synth/id732618765/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/spacetheremin/id884417701/reviews) |
| Number of ratings | **28** | 4 |
| Positive reviews | 84.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 6 MB |
| Requires iOS | 12.0 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Derek Mesecar](https://appshunter.io/developer/505825864) | [YUKIO ONOZUKA](https://appshunter.io/developer/876684692) |

## What reviewers say

### Jam Synth

[App page](https://appshunter.io/ios/app/jam-synth/id732618765)

Transform your guitar into a synthesizer with this app. It accurately tracks pitch and amplitude to control digital oscillators, offering unique synth leads and effects. Go beyond MIDI with expressive, organic sounds and advanced modulation options.

**Highlights:** Monophonic guitar synthesizer, Pitch and amplitude tracking, Multiple oscillator wave shapes, Dynamic filter tracking, Advanced FX section (LFO, Delay, Harmonizer, etc.), MIDI output for external synths, High-accuracy pitch tuner

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intelligent Harmonizer | Free | one-time |
| Rotary Vibe | Free | one-time |
| Rainbows | Free | one-time |
| Time Stopper | Free | one-time |


### 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


## Frequently asked questions

### Is Jam Synth free?

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

### Is SpaceTheremin free?

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

### Which has better reviews, Jam Synth or SpaceTheremin?

Jam Synth is rated higher. Jam Synth averages 5.0 out of 5 from 28 ratings, while SpaceTheremin averages 4.8 from 4 ratings.

### Do Jam Synth or SpaceTheremin have ads?

Neither Jam Synth nor SpaceTheremin shows ads.

### Which is updated more often, Jam Synth or SpaceTheremin?

Jam Synth ships an update every 4 months, and SpaceTheremin every 2 months. Most recently, Jam Synth was updated on October 6, 2026 and SpaceTheremin on September 18, 2026.

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