AU Studio vs Streemur AU
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.
Streemur AU
Transform live internet radio into a creative tool for music production and sound design. Explore thousands of stations worldwide and integrate them into your favorite music apps or enjoy them on the road via CarPlay.
- Browse 50,000+ global radio stations
- AUv3 extension for music apps
- CarPlay support
- Search by country, genre, codec, language, bitrate
- Save favorites and presets
- MIDI controller and automation mapping
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Streemur AU is a live internet radio instrument for iPhone and iPad. Includes CarPlay support and an AUv3 extension for GarageBand, AUM, Loopy Pro, Logic Pro, and more. Browse radio stations from around the world, then bring live internet radio directly into your favorite music apps with the included AUv3 extension—or enjoy it on the road with CarPlay. Search for unexpected sounds, build ambient textures, transform live broadcasts, or explore global music and culture. Streemur AU transforms internet radio into a creative source for music production, sound design, and sonic experimentation. Features: • Browse more than 50,000 radio stations worldwide • CarPlay support for listening on the road • Included AUv3 extension for compatible host apps • Browse stations by country, genre, codec, language, and bitrate • Save favorites and presets for quick access • Map playback, volume, randomization, and other AUv3 parameters to hardware MIDI controllers and host automation • Use live radio as a source for effects, sound design, and experimentation • Universal app for iPhone and iPad From local broadcasts to distant stations across the globe, Streemur AU makes discovering new sounds part of the creative process.
Screenshots
Verdict
The clearest difference is review sentiment: Streemur AU at 100% against AU Studio's 50%. Streemur AU also leads on rating (5.0 vs 4.5) and update cadence (weekly vs monthly). AU Studio's advantage is price ($4.99 vs $6.99). On ratings volume, ads, in-app purchases and monetization model 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 $4.99 and Streemur AU $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Streemur AU holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 50% of AU Studio's written reviews are positive against 100% of Streemur AU's.
AU Studio ships an update monthly, Streemur AU weekly. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | AU Studio | Streemur AU |
|---|---|---|
| Price | $4.99 — better | $6.99 |
| Rating | 4.5 (4 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 3 |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, Apple Watch |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 7 MB | 39 MB |
| Age rating | 4+ | 12+ |
| Developer | Christian Thompson | Casey I.T. LLC |
Customer experience
AU Studio
Streemur AU
In-app purchases
AU Studio
No in-app purchases
Streemur AU
No in-app purchases









