AU Studio vs JenDie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
JenDie
This app faithfully emulates a classic 1970s Italian monophonic analog synthesizer for iPhone and iPad. It offers authentic vintage sound with modern touch controls, allowing for expressive leads, basses, and evolving textures. Use it standalone or as an AUv3 plugin in compatible hosts.
- Faithful Jen SX-1000 emulation
- Authentic & Clean sound modes
- Continuous waveform morphing
- Pulse width & PWM modulation
- 46 factory presets
- Full preset management
- Multi-touch keyboard
- MIDI support
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JenDie is inspired by the legendary Jen SX-1000 — the classic Italian monophonic analog synthesizer of the late 1970s — reimagined for your iPhone and iPad. Every oscillator, filter, and envelope has been carefully modeled to recreate the warm, gritty, unmistakable character of that vintage analog sound, now in a modern, touch-first instrument. Use JenDie as a standalone synth or as an Audio Unit (AUv3) plug-in inside GarageBand, AUM, Cubasis, Logic Pro for iPad, and any AUv3-compatible host. KEY FEATURES • Faithful Jen SX-1000 emulation — true-to-hardware VCO, VCF, and envelope behavior, including analog drift for an authentic, living tone. • Authentic & Clean modes — choose vintage character or a cleaner, more precise sound. • Continuous waveform morphing — sweep smoothly between waveforms instead of switching in steps, with automatable control for evolving leads and basses. • Pulse width & PWM — shape and modulate the pulse waveform for rich, animated timbres. • 46 factory presets — from classic vintage leads and basses to new morphing patches designed for automation. • Full preset management — save, organize, and recall your own sounds; presets are stored in the Files app for easy backup and sharing. • Multi-touch keyboard — playable on-screen keyboard with multi-finger support. • Pinch-to-zoom interface — zoom and pan the panel for precise control on any screen size. • MIDI support — play JenDie from any connected MIDI controller, with a built-in MIDI Panic control. • Optimized for iOS — efficient DSP designed to run smoothly on iPhone and iPad. WHO IT'S FOR Whether you're a synth enthusiast chasing that vintage monophonic sound, a producer who needs a characterful lead and bass machine, or a sound designer exploring evolving textures, JenDie delivers genuine analog attitude in a portable package. Download JenDie and bring a piece of analog synth history to your mobile studio.
Screenshots
Verdict
The clearest difference is review sentiment: JenDie at 100% against AU Studio's 50%. JenDie also leads on rating (5.0 vs 4.5) and price ($4.99 vs $9.99). On ratings volume, update cadence, ads and in-app purchases 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
AU Studio costs $9.99 and JenDie $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
JenDie holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 50% of AU Studio's written reviews are positive against 100% of JenDie's.
AU Studio ships an update monthly, JenDie every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | AU Studio | JenDie |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 4.5 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 2 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Thompson | Diego Capoccitti |
Customer experience
AU Studio
JenDie
In-app purchases
AU Studio
No in-app purchases
JenDie
No in-app purchases








