EffectDeck
Masahiro Sato Music iPhoneiPadiPod touch
EffectDeck is a free Music app for iPhone and iPad by Masahiro Sato. Rated 4.8/5 from 12 ratings. Requires iOS 27.0. Updated October 15, 2026.
- Rating
- 4.8
- 12 ratings
- Price
- Free
- on the App Store
- Size
- 16 MB
- Age 4+
- Updated
- Oct 15
- 2026 · v2026.10.16
Screenshots
About EffectDeck
EffectDeck puts an effect chain on the audio other apps are already playing, and the effects you can put in it are not limited to the ones it ships with. Pick EffectDeck as the output in Control Center, then open the app and build a chain. No virtual cable, no routing to set up, nothing to configure first. Start from over 100 of EffeTune's effects, running unmodified: the same DSP code EffeTune runs on the desktop and on the web. Add the AUv3 plug-ins already on your device and your own impulse responses. When the effect you want does not exist, write it as a JSFX script, and it goes into the chain like any other effect. WHAT YOU GET - Over 100 built-in effects: EQ, dynamics, saturation, modulation, reverb, delay, spatial, lo-fi and restoration - JSFX effects: import a script from Files, a link or the clipboard. Each gets its own sliders and, if it draws, its own display - AUv3 effect plug-ins installed on your iPhone or iPad - Convolution reverb with your own impulse responses, and AutoEQ profiles for the 15-band EQ - Analyzers you can drop into the chain: spectrum, spectrogram, oscilloscope, level and stereo meters - Presets from EffeTune, plus your own presets in folders - Share a chain or a JSFX script as a link, and open the links others send you - A two-column layout on iPad - Oversampling at 48, 96 or 192 kHz, with latency and CPU shown while it runs HOW IT WORKS iOS 27 lets an app present itself as an audio output device. EffectDeck appears in Control Center next to your speaker and headphones. Choose it, and the audio from the player you are using is handed over, processed, and played back on the same device. Apps that never report themselves as playing, most games among them, keep going straight to the speaker. The audio never leaves the device, and nothing is collected. If you are signed in to iCloud, your presets and chain follow you to your other devices. The effects are EffeTune by Yoshiyuki Kobayashi (MIT). This app is a separate project and is not affiliated with EffeTune. The name was changed at the upstream author's request.
Ratings & reviews
4.8
12 ratings
What’s new
Version 2026.10.16 · Updated October 15, 2026
New since 2026.10.08 Remote Control - Edit the effect chain of EffeTune 2.14 on a computer on the same network. Allow remote control in EffeTune's settings, then scan its QR code from Settings → Remote. IR Reverb can choose from the computer's IR Library. iPad - Cards with a graph switch between open and graph only when tapped, in two columns too. - Rotating keeps your place in the chain. Cards were misaligned after rotating until you scrolled. Dragging - A card you drag folds to its title until you drop it, so it is easy to move past other cards. - Dragging is smoother. Floating Meters - Spectrogram, waveform, spectrum, stereo and level meters of the chain input or output in a Picture in Picture window, over any app. Turn it on from the … menu → Floating Meters. Also new - EffeTune 2.14.0 (DSP 0.14.0): Analog Meter Custom mode, Oscilloscope up to 10 seconds (smooth scrolling with Trigger Mode Off), Note Spectrogram instrument colours, Highlight and onsets. - SFZ Note Player plays SFZ instruments you import from Files, keeps them in the SFZ Library, and plays a note when you touch its voice display. - Adaptive Prediction, Cassette Mode and the new Rhythm Analyzer layout (EffeTune 2.13.0). - IR Reverb shows the energy decay curve and RT60 of the loaded impulse response. - Settings → About → Reset All Data erases chains, presets, imported files and settings, including the iCloud copy. - Share this chain always makes an effectdeck.nemut.ai link that opens in EffectDeck. - Less work while idle: no 96/192 kHz resampling while bypassed, and the extension and the app wake only when audio arrives. Fixes - Remote Control: the Scan QR Code sheet closed immediately. Previous updates (2026.10.08): - Output Correction: assign one of your presets to each pair of headphones or speaker. It is applied after the chain and switches automatically when the output changes. - Third-party AUv3 plug-ins appear under Plugins, and Apple Audio Units show their own interface. - JSFX scripts run about 1.3 to 1.4 times faster on iPhone.
App privacy
The developer, Masahiro Sato, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
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