UAFX Control vs Cortex Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UAFX Control
This app enhances the functionality of Universal Audio's stompbox effects pedals. Users can customize pedal features, manage presets, and access new functionalities through firmware updates. It offers improved Bluetooth connectivity for faster and more reliable connections.
- Customize pedal features
- Manage presets
- Bluetooth connectivity
- Firmware update support
- OX Stomp editor
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UAFX Control is the companion application for Universal Audio's line of stompbox effects pedals. You can use the app to customize pedal features and more. What's New in v3.0.5 • Fixed slider value and slider responsiveness issues What's New in v3.0.4 • OX Stomp editor and preset improvements • Other minor fixes and enhancements What's New in v3.0.2 • Minor bug fixes and improvements What's New in v3.0.1 • Bluetooth redesigned for faster connections and rock-solid reliability • Support for new features in UAFX firmware version 2.0 • (OX Stomp) Off-Axis mic states are now correctly displayed Note that UAFX firmware updates are only available using the UA Connect desktop application, available at: uaudio.com/uafx/start
Cortex Studio
This app uses AI to generate complete guitar presets for Neural DSP Quad Cortex users. Simply describe your desired sound, and it will provide amp models, effect chains, and specific settings. It also offers MIDI control and a personal preset library for quick recall.
- AI-generated guitar presets
- Customizable amp and effect settings
- Full signal chain creation
- MIDI control for preset recall
- Personal preset library
- Quad Cortex model compatibility
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Dialing in the perfect guitar tone takes years of expertise. Cortex Studio puts an AI audio engineer in your pocket. Built exclusively for Neural DSP Quad Cortex players, Cortex Studio turns a simple description into a complete, ready-to-build preset. Type "Slash GNR metal cranked through Marshall amps" or "David Gilmour Comfortably Numb solo" and the AI delivers every setting you need—instantly. Describe any sound: an artist, a song, a decade, a genre, or just a vibe. Cortex Studio generates: • The exact Quad Cortex amp model to use • Gain, bass, mid, treble, presence, and master settings • A full signal chain with every effect in the right order • Cabinet model, mic type, and mic position MIDI CONTROL • Connect your Quad Cortex via USB and send Program Change messages directly from the app. Build your tone on the QC, save it to My Presets, and recall it with one tap—no menu diving, no footswitch gymnastics. PRESET LIBRARY • Every AI-generated preset can be saved to your personal library. Browse your collection, and recall the preset on your Quad Cortex instantly. BUILT FOR THE QUAD CORTEX • Cortex Studio knows the entire Quad Cortex amp and effects library available to view under devices. Every recommendation uses only models and effects available on your device—nothing hypothetical, nothing unachievable. YOUR KEY, YOUR QUOTA • 25 free AI requests included—no sign-up, no credit card. For unlimited use, connect your own free Google Gemini API key in seconds (aistudio.google.com, no credit card required). Your key stays private in your device's Keychain and is never shared. PERFECT FOR • Quad Cortex owners who want to find tones faster • Players who know the sound in their head but not the settings • Live performers who need quick, reliable preset recall via MIDI • Studio players chasing specific artist or song tones NOTE • Cortex Studio is an independent app and is not affiliated with or endorsed by Neural DSP Technologies.
Screenshots
Verdict
The clearest difference is rating: Cortex Studio at 2.7 against UAFX Control's 2.1. Cortex Studio also leads on ads (none vs shown) and update cadence (daily vs every 3 weeks). UAFX Control's advantage is ratings volume (19 vs 3) and review sentiment (9% vs 0%). On price 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Cortex Studio holds the better App Store score, 2.7 against 2.1. That said, the two scores are not equally well evidenced: UAFX Control has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 9% of UAFX Control's written reviews are positive against 0% of Cortex Studio's, so the app with the better star average is not the one people write more warmly about.
UAFX Control ships an update every 3 weeks, Cortex Studio daily. The most recent releases landed on September 27, 2026 and August 31, 2026 respectively.
| Parameter | UAFX Control | Cortex Studio |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (19 ratings) | 2.7 (3 ratings) — better |
| Positive reviews | 8.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 19 — better | 3 |
| Update frequency | Every 3 weeks | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 60 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Universal Audio | Morgan Rai |
Customer experience
UAFX Control
Cortex Studio
Bugs and requests
UAFX Control
Reported bugs
4 issues- App crashes after firmware updates
- Pedals not detected or recognized by app
- Registration process often fails
- Bluetooth connection randomly drops
Requested features
4 requests- Ability to freely assign pedal buttons
- Option to view and edit preset settings
- MIDI support for preset changes
- Landscape mode support on iPad
Cortex Studio
Not enough reviews yet to summarise bugs or requests.
In-app purchases
UAFX Control
No in-app purchases
Cortex Studio
No in-app purchases
Questions
Is UAFX Control free?
Is Cortex Studio free?
Which has better reviews, UAFX Control or Cortex Studio?
Do UAFX Control or Cortex Studio have ads?
Which is updated more often, UAFX Control or Cortex Studio?
Other comparisons
