# Theremin Synth vs Tandem MIDI Canvas

The clearest difference is price: Theremin Synth at $2.99 against Tandem MIDI Canvas's $14.99. Theremin Synth also leads on iOS requirement (12.1 vs 17.0). Tandem MIDI Canvas's advantage is rating (5.0 vs 3.2) and review sentiment (100% vs 64%). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Theremin Synth costs $2.99 and Tandem MIDI Canvas $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tandem MIDI Canvas holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews point the same way: 64% of Theremin Synth's written reviews are positive against 100% of Tandem MIDI Canvas's.

Theremin Synth ships an update every 2 months, Tandem MIDI Canvas every 5 weeks. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Theremin Synth | Tandem MIDI Canvas |
| --- | --- | --- |
| Price | **$2.99** | $14.99 |
| Rating | [3.2 (6 ratings)](https://appshunter.io/ios/app/theremin-synth-record-and-loop/id1104816326/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tandem-midi-canvas/id6747936331/reviews)** |
| Number of ratings | **6** | 3 |
| Positive reviews | 63.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 1 MB | 24 MB |
| Requires iOS | **12.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Luke Phillips](https://appshunter.io/developer/1104816325) | [Mitchell Cohen](https://appshunter.io/developer/1811479646) |

## What reviewers say

### Theremin Synth

[App page](https://appshunter.io/ios/app/theremin-synth-record-and-loop/id1104816326)

Create unique soundscapes with this multitouch synthesizer. Record, loop, and overdub your creations, then export them as WAV files to share. Experiment with various waveforms and effects for endless sonic possibilities.

**Highlights:** Multitouch synthesis, Record, loop, and overdub, Adjustable delay, feedback, and scuzz effects, Four waveform options, Export recordings as WAV files, Offline functionality

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

**In-app purchases:** none


### Tandem MIDI Canvas

[App page](https://appshunter.io/ios/app/tandem-midi-canvas/id6747936331)

Design and build custom MIDI controllers on your iPhone or iPad. Save presets, perform with motion and snapshots, and collaborate in real-time with others. Features smart snapping, layout templates, and morphing between states.

**Highlights:** Build custom MIDI controller layouts, Save and recall presets, Perform with motion and snapshots, Real-time collaboration, Smart MIDI setup, Morphing between states

**Features:** SharePlay

**In-app purchases:** none


## Frequently asked questions

### Is Theremin Synth free?

Theremin Synth costs $2.99, with no in-app purchases.

### Is Tandem MIDI Canvas free?

Tandem MIDI Canvas costs $14.99, with no in-app purchases.

### Which has better reviews, Theremin Synth or Tandem MIDI Canvas?

Tandem MIDI Canvas is rated higher. Theremin Synth averages 3.2 out of 5 from 6 ratings, while Tandem MIDI Canvas averages 5.0 from 3 ratings.

### Do Theremin Synth or Tandem MIDI Canvas have ads?

Neither Theremin Synth nor Tandem MIDI Canvas shows ads.

### Which is updated more often, Theremin Synth or Tandem MIDI Canvas?

Theremin Synth ships an update every 2 months, and Tandem MIDI Canvas every 5 weeks. Most recently, Theremin Synth was updated on October 16, 2026 and Tandem MIDI Canvas on October 10, 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.*