# SpaceCraft Granular Synth vs Surface Builder

The clearest difference is price: SpaceCraft Granular Synth at $9.99 against Surface Builder's $14.99. SpaceCraft Granular Synth also leads on ratings volume (151 vs 15) and iOS requirement (9.3 vs 13). On rating, review sentiment, update cadence and ads there is nothing between them.

SpaceCraft Granular Synth costs $9.99 and Surface Builder $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for SpaceCraft Granular Synth against 4.7 for Surface Builder. That said, the two scores are not equally well evidenced: SpaceCraft Granular Synth has 151 ratings behind it against 15, so its average is the more settled of the two. Written reviews are what separate them: 87% of SpaceCraft Granular Synth's written reviews are positive against 80% of Surface Builder's.

SpaceCraft Granular Synth ships an update every 2 weeks, Surface Builder every 3 weeks. The most recent releases landed on September 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SpaceCraft Granular Synth | Surface Builder |
| --- | --- | --- |
| Price | **$9.99** | $14.99 |
| Rating | [4.7 (151 ratings)](https://appshunter.io/ios/app/spacecraft-granular-synth/id1391256308/reviews) | [4.7 (15 ratings)](https://appshunter.io/ios/app/surface-builder/id6449735778/reviews) |
| Number of ratings | **151** | 15 |
| Positive reviews | **87.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Paid | Paid |
| Size | 103 MB | 32 MB |
| Requires iOS | **9.3** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Watt](https://appshunter.io/developer/1391256307) | [4Pockets.com](https://appshunter.io/developer/370131860) |

## What reviewers say

### SpaceCraft Granular Synth

[App page](https://appshunter.io/ios/app/spacecraft-granular-synth/id1391256308)

Transform any sound into a playable musical instrument using granular synthesis. Create unique textures, soundscapes, and rhythms from your voice, ambient noise, or built-in samples. Record audio, load files, and save your sonic creations.

**Highlights:** Granular synthesis engine, Record audio via microphone, Load audio files from storage, Create textures and soundscapes, Arpeggiated rhythm generation, Save and recall presets, MIDI and MPE support

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

**In-app purchases:** none

**What reviewers like**

- 🎨 Intuitive and beautiful user interface design
- 🎵 Exceptional sound quality and musical output
- 👐 Excellent XY pad control system for expressive playing
- 💰 Extremely affordable price point
- 🎹 Easy to use for beginners and professionals alike

**What reviewers complain about**

- 🔇 No background audio playback capability
- 💾 Cannot save presets or project states
- 🎚️ Limited LFO options and control range
- 🎛️ Small control windows make precise adjustments difficult
- ⚙️ Limited reverb and filter customization options

**Reported bugs**

- App crashes when loading files from nested Dropbox folders
- Audio glitches and heavy crackling on older iPad models
- Unexpected background audio drone when app not in use
- AudioShare compatibility issues across different iOS versions
- App resets to factory settings on reopening

**Requested features**

- Background audio playback support
- Preset and project state saving functionality
- Faster and more flexible LFO with additional waveforms
- Wider grain selection windows for precise control
- Built-in delay effect


### Surface Builder

[App page](https://appshunter.io/ios/app/surface-builder/id6449735778)

Create custom MIDI control surfaces for audio applications. Design interfaces with buttons, knobs, and faders to send and receive MIDI data, control audio clips, and customize appearance. Supports AUv3 plugins and standalone use.

**Highlights:** Customizable MIDI control surfaces, AUv3 plugin and standalone modes, Send/receive MIDI data (notes, controllers, pitch bend), Audio clip playback control, Multi-scene interface design, Drag and drop interface customization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpaceCraft Granular Synth free?

SpaceCraft Granular Synth costs $9.99, with no in-app purchases.

### Is Surface Builder free?

Surface Builder costs $14.99, with no in-app purchases.

### Which has better reviews, SpaceCraft Granular Synth or Surface Builder?

SpaceCraft Granular Synth and Surface Builder are both rated 4.7 out of 5 on the App Store, from 151 and 15 ratings respectively.

### Do SpaceCraft Granular Synth or Surface Builder have ads?

Neither SpaceCraft Granular Synth nor Surface Builder shows ads.

### Which is updated more often, SpaceCraft Granular Synth or Surface Builder?

SpaceCraft Granular Synth ships an update every 2 weeks, and Surface Builder every 3 weeks. Most recently, SpaceCraft Granular Synth was updated on September 29, 2026 and Surface Builder on September 22, 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.*