Amplifier/Effects vs MIDI Controller/Oscilloscope

This app transforms your iPhone into a powerful audio processing tool, recording hub, or portable amp, allowing you to amplify any connected audio input (for example USB-C guitar pedals, USB-C to 6" cables, bluetooth headphones, etc.) and route it to your preferred output device, including built-in speakers, external USB audio interfaces, AirPlay, and Bluetooth. (Please note: wireless inputs and outputs will introduce latency) Enhance your audio signal with a suite of built-in effects, including independent pre- and post-gain stages, noise gate, distortion, reverb, and delay. Fine-tune your audio with precision using the integrated 6-band equalizer, featuring customizable frequency band types and adjustable octave widths. The app also offers flexible signal chain management, enabling you to reorder effects (including the EQ) within both gain stages to achieve your desired processing flow. Finally, the app also offers a metronome and tuner functionality which can be used to practice and set up instruments. The metronome feature can be used without selecting an input. As with all my apps, this one is completely free to use, with no ads, no trackers, and no hidden costs.

A powerful all-in-one studio companion for hardware synthesizers, drum machines, and audio gear. Connect your USB MIDI devices and audio interfaces and start playing, sequencing, and analyzing instantly. KEYS — Multi-Touch Performance Keyboard • 3-octave velocity-sensitive piano with multi-finger support • Velocity from touch position — soft on top, loud at the bottom • Spring-loaded pitch bend wheel (14-bit precision) • Mod wheel (CC#1) for expressive control • Program change selector with quick recall • Octave shifting from -2 to +5 • Per-channel routing to different synths • Transpose mode — keyboard transposes the live sequence SEQ — 16-Channel Step Sequencer • 16 independent MIDI channels, up to 32 steps each • Mono mode for melody and bass lines • Poly mode with full piano roll editor • Swing control for groove (0-50%) • Live recording from your external keyboard • MIDI clock sync — auto-detects tempo from incoming clock • Per-channel destination routing — each track plays a different synth • Live transpose during playback • Adjustable note range and pattern length SCOPE — Real-Time Multi-Channel Oscilloscope • Up to 8 channels simultaneously from USB audio interfaces • 1-2-5 standard time/division (10 microseconds to 500 ms) • Configurable voltage/division with auto-scale • Rising and falling edge trigger with adjustable level • Auto and Normal trigger modes • Per-channel color, vertical offset, and on/off • Phosphor persistence with adjustable decay • Glow effect with intensity control • Three background themes — Classic, Space, Shockwave • Metal-accelerated rendering CONNECTIVITY • USB MIDI — plug in your hardware controllers and synths • USB audio interfaces — multi-channel input for the oscilloscope • Network MIDI / Bluetooth MIDI compatible • Companion iPhone app — record video while iPad captures audio over Wi-Fi (Bonjour) DESIGNED FOR PERFORMANCE • Sub-millisecond sequencer timing • Lock-free audio buffers for glitch-free capture • Optimized for iPad landscape — full immersive UI • Per-app settings for every channel, every parameter, persistent across sessions Whether you're sketching ideas in the studio, performing live, debugging a Eurorack patch, or learning synthesis, this app brings keyboard, sequencer, and oscilloscope into a single, fast, focused interface. No ads. No subscriptions. No accounts. Just plug in and play.