Signal Path vs SpaceCraft Granular Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Signal Path
Record and analyze audio spectrums with a beautiful interface. Inspect detailed spectrums, adjust amplitude thresholds, and manage file sizes. Supports various I/Q data formats and FFT lengths.
- Record audio spectrums
- Inspect spectrums with two-finger drag
- Adjust amplitude thresholds
- Manage recording file size
- Open and save WAV files
- Supports raw I/Q data formats
- Multiple FFT lengths and window functions
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Signal Path is the most performant spectrum viewing app with beautiful user interface. You can record audio spectrums using microphone and replay them or open large recordings containing I/Q data. Inspect spectrums Spectrums can be selected using two finger drag gesture. Tapping on histogram reveals amplitude value of the selected frequency bin. Adjust thresholds Signal Path automatically expands amplitude threshold range when viewing spectrums. You can also set custom amplitude thresholds if needed. Keeping file size under control Signal Path can set a maximum file size for recording after which file is recreated. Can open wav files and save recorded audio as wav Supported interleaved raw I/Q data formats Float, int8, int16, int32, uInt8, uInt16, and uInt32 Fast Fourier transform lengths 256, 512, 1024, 2048, 4096, 8192 Window functions Rectangular, Blackman, Hamming, and Hann
SpaceCraft Granular Synth
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.
- 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
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With SpaceCraft (MIDI, MPE, AUv3, IAA) you can transform any sound into a playable musical instrument via Granular Synthesis. You can create textures, soundscapes and arpeggiated rhythms from sounds such as your voice, ambient noise or the high quality built-in audio samples. Tap the 'Input' button (top left) to record audio via your device's microphone or load a file from your device (access* to iCloud, Dropbox, Google Drive, Audioshare*** etc.). Experiment with turning everyday sounds into unusual instruments. Save your creations and corresponding samples via presets. Also, tap the 'rec' button (top right) to record your performance (maximum 20 minutes). This is used in standalone only as the AUv3 host can be used to record the output. Supports AUv3 and IAA (recommended to use in the effects slot to allow live input audio recording). * NOT COMPATIBLE with GarageBand as AUv3 (but can be loaded as Inter App Audio (IAA) or via an effects insert in the GarageBand sampler, with no MIDI capability) ** iOS11 and above provides equivalent folder access to the built-in iOS 'Files' app. Note that iOS10 and below has limited access to folders (no Audioshare folder access for iOS10 and below) *** Access to Audioshare files is done via the iOS files app
Screenshots
Verdict
The clearest difference is review sentiment: SpaceCraft Granular Synth at 86% against Signal Path's 17%. SpaceCraft Granular Synth also leads on rating (4.7 vs 3.0) and ratings volume (151 vs 2). Signal Path's advantage is price ($8.99 vs $9.99). On ads, in-app purchases, monetization model 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
Signal Path costs $8.99 and SpaceCraft Granular Synth $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SpaceCraft Granular Synth holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: SpaceCraft Granular Synth has 151 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of Signal Path's written reviews are positive against 86% of SpaceCraft Granular Synth's.
Signal Path ships an update every 2 months, SpaceCraft Granular Synth every 2 weeks. The most recent releases landed on October 5, 2026 and October 20, 2026 respectively.
| Parameter | Signal Path | SpaceCraft Granular Synth |
|---|---|---|
| Price | $8.99 — better | $9.99 |
| Rating | 3.0 (2 ratings) | 4.7 (151 ratings) — better |
| Positive reviews | 16.7% of reviews | 86.4% of reviews — better |
| Number of ratings | 2 | 151 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #175 — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.6 | 9.3 — better |
| Further details — not scored | ||
| Size | 4 MB | 103 MB |
| Age rating | 4+ | 4+ |
| Developer | Toomas Vahter | Mark Watt |
Customer experience
Signal Path
SpaceCraft Granular Synth
Bugs and requests
Signal Path
Not enough reviews yet to summarise bugs or requests.
SpaceCraft Granular Synth
Reported bugs
13 issues- 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
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- Live sampling mode latency and unintuitive behavior
- Red playhead sometimes extends beyond range selector
- Inconsistent audio input behavior in live sampling
- No audio output in DAW hosts on some iOS versions
- Crashes when multiple instances launched simultaneously
- File import failures on iOS 9 and 10
- Dropbox access limited to iCloud only on some devices
- Recording duration limitations on iPhone (1 minute vs advertised 20 minutes)
Requested features
20 requests- 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
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- Amplitude envelopes for each oscillator
- Panning and multi-channel routing options
- Sample name display in UI
- Ableton Link support
- Rest notes in sequencer via double-tap
- Ability to feed synth output to another synth in real-time
- More reverb length options
- CC automation recording in DAWs
- Bluetooth MIDI support
- Custom color scheme options
- Broader grain readout curve options
- Wider parameter control ranges
- True IAA instrument support (not just effect)
- Streamlined file import and management
- More included presets
In-app purchases
Signal Path
No in-app purchases
SpaceCraft Granular Synth
No in-app purchases
Questions
Is Signal Path free?
Is SpaceCraft Granular Synth free?
Which has better reviews, Signal Path or SpaceCraft Granular Synth?
Do Signal Path or SpaceCraft Granular Synth have ads?
Which is updated more often, Signal Path or SpaceCraft Granular Synth?
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