Perihelion Synth vs AU Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perihelion Synth
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Perihelion is an ambient drone synthesizer for creating vast, evolving soundscapes with minimal effort. PHILOSOPHY "Slow gravity, unstable cosmos" — huge pads that breathe and evolve on their own. Set and drift. SOUND ENGINE 8-voice polyphony with organic layering 4 sound macros: MASS, DRIFT, MOTION, SPACE Full ADSR envelope + CHAOS intensity SWELL macro for cinematic builds XY pad for real-time Tone × Energy control Rich effects: chorus, delay, reverb PLAY MODES One-finger chord voicings (Maj, min, sus, 6, Δ7, 7) 13 arp patterns: Alberti, Montuno, Pop Gallop, and more Drone mode with root, power, and triad options Scale quantization: Minor, Dorian, Phrygian, Pentatonic HOLD for sustained notes, chords, or arps 50 FACTORY PRESETS Solar Drones, Grav Pads, Dust & Wind, Sub Temples, Motion Keys, Void FX AUv3 AUDIO UNIT Works as a plugin in AUM, Cubasis, GarageBand, BeatMaker. Full MIDI and automation support. Bluetooth MIDI for external controllers. PERFECT FOR Ambient music production Film and game scoring Meditation and relaxation Sound design and textures Live performance No subscription. No ads. Just sound.
AU Studio
This app acts as a dedicated host for Audio Unit extensions, allowing musicians and developers to inspect, audition, and test installed audio plugins. It provides detailed information about each unit's capabilities and behavior without requiring a full digital audio workstation.
- Scan and catalog installed Audio Units
- Filter plugins by developer, type, and status
- Load AUv3 interfaces or use detailed inspector
- Inspect registry identity, MIDI support, and parameters
- Route CoreMIDI sources and audition audio effects
- Monitor runtime CPU and memory usage
- Built-in manual for guidance
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AU Studio is a focused Audio Unit host, not a DAW. Open the plug-ins you already own, hear them in seconds, and see exactly what they expose. Made for musicians, sound designers, and Audio Unit developers who need a fast, honest test bench. No session to build, no tracks to arm. Pick a unit from your catalog and its interface opens in a panel of its own, named and sized to the plug-in, with your host controls in a bar above it. Key features: - Scan the instruments, effects, music effects, generators, and MIDI processors already installed on your device: AUv3 on iPhone, iPad, and Apple Vision Pro, plus AUv2 on Mac. - Filter by developer, type, or search text, and hide Apple built-ins to focus on third-party gear. - Open a plug-in's own interface when it ships one, and fall back to a metadata view when it doesn't, with the full inspector always one tap away. - Inspect identity, four-character codes, version, sandbox and cached validation status, MIDI support, busses, parameters, presets, latency, and tail time. - Step through factory presets, then save your own working state without leaving the interface. - Play instruments from the floating MIDI keyboard: notes, pitch bend, mod wheel, auto, mono or poly voicing, a shiftable range, and one-tap panic for stuck notes. Your hardware controller lights up the on-screen keys as you play. - Run a guitar, a microphone, or any channel of your interface through a loaded effect. Pick the device, pick mono or stereo, pick the channels. - Load a track into the floating media player, scrub the waveform, loop a section, and play along with your live input at the same time. - Check a signal path in seconds with the built-in test tone. - Route external CoreMIDI sources in, and send generated MIDI back out to a CoreMIDI destination. - Test MIDI 2 units with automatic, MIDI 1, or MIDI 2 protocol selection: high-resolution notes, registered and per-note controllers, per-note pitch bend, discovered MIDI-CI Profiles, and a monitor showing raw or decoded MIDI going in and coming out. - Choose your output device on Mac, and set sample rate, buffer size, and which MIDI sources are enabled. - Keep host-process CPU and memory in view while you work. - Open unfamiliar plug-ins with less risk. AU Studio asks first when the system does not mark a unit sandbox-safe, and a peak limiter sits across the host output. - Read the built-in manual, fully searchable: discovery, routing, presets, hardware input, floating tools, troubleshooting, and developer notes. What AU Studio is: A focused host for discovering, opening, auditioning, and inspecting the Audio Units already on your device. It answers the practical questions: Is the unit visible? Does it load? Does it have an interface? What busses, parameters, presets, and MIDI capabilities does it expose? Does MIDI reach it? Does audio pass through it? What AU Studio is not: It is not a DAW. No multitrack recording, clip launching, timeline arrangement, piano-roll sequencing, MIDI learn, automation lanes, song export, or mastering tools. AU Studio ships no Audio Unit of its own — no instrument, no effect, no DSP engine. It hosts the units other apps provide and wraps them in host-owned routing, auditioning, and inspection. Discovery uses the system Audio Unit registry. If a provider app is not installed, not enabled, or not visible to the platform, AU Studio cannot invent it. Interface behavior, presets, parameter meaning, MIDI mapping, and DSP results belong to each Audio Unit.
Screenshots
Verdict
The clearest difference is iOS requirement: Perihelion Synth at 15.0 against AU Studio's 17.0. On price, ads, in-app purchases 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
Perihelion Synth costs $9.99 and AU Studio $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Perihelion Synth | AU Studio |
|---|---|---|
| Price | $9.99 | $9.99 |
| Rating | — | 4.5 (4 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | JOSIAH BUJANDA | Christian Thompson |
In-app purchases
Perihelion Synth
No in-app purchases
AU Studio
No in-app purchases
Questions
Is Perihelion Synth free?
Is AU Studio free?
Do Perihelion Synth or AU Studio have ads?
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