MultitrackStudio for iPad

MultitrackStudio turns your iPad into a digital multitrack music recording studio. You can record, edit and mix audio and MIDI tracks. Both "one man band" recording, adding tracks one at a time, and live multitrack recording are supported.
Both audio and MIDI tracks can be edited. MIDI editing features include pianoroll, drum, score and pattern editors. Tempo and time signature can change throughout the song.
MultitrackStudio for iPad comes with many high quality audio effects including a guitar amp simulator. MIDI instruments include GM-compatible MultitrackStudio Instruments, SoundFont Player and Matrix Sampler. External (hardware) synths can be used as well.
AUv3 audio effects, instruments and MIDI effects are supported, so 3rd party apps can integrate into MultitrackStudio.
The straightforward user-interface has been designed with tape-based recording in mind. It's easy to use yet powerful.

Key features:
• Up to 16 audio/MIDI tracks, audio tracks can be mono or stereo.
• Editors: audio, pianoroll, drum, score, MIDI patterns, MIDI controllers, tempo/time signature and song.
• One effect return section.
• One master section.
• Three effect slots per mixer section (two for MIDI tracks).
• Audio Effects: Automated Fader, Chorus, Compressor, DeEsser, Echo, EQ, Flanger, Guitar Amp, Master Limiter, Noise Gate, Phaser, Reverb, Rotor, Saturator, Stereo Imager, Tremolo, Tuner and Vibrato.
• MIDI instruments: MultitrackStudio Instruments (General MIDI compatible), SoundFont Player, Matrix Sampler, up to four Virtual MIDI Apps and one CoreMIDI output device.
• MIDI Effects: Arpeggiator, Poly Modulator and Velocity Curve.
• Supports Audio Unit effects and instruments and MIDI effects (the latter require iOS 12).
• Supports Inter-App Audio effects and instruments.
• Supports Audiobus (acts as output in Audiobus app).
• Supports MPE, MIDI 2.0 and MIDI-CI (MIDI 2.0 requires iPadOS 14, MIDI-CI requires iPadOS 17).
• MIDI sources: onscreen keyboard (keyboard, fourths, guitar, bass, violin, matrix, chords and drum layouts) and one CoreMIDI input device. Supports Bluetooth LE MIDI.
• Supports Bluetooth audio output.
• Audio sample rate: 44.1 or 48 kHz.
• Imports .wav, .aif, .mp3, .mid, .midi2 and various other audio file types.
• Exports .wav and .mid files.
• Import/export audio/MIDI via Document Picker, Copy/paste, iTunes File Sharing, AudioShare or email.
• Imports/exports .zip file containing all files needed to open song, compatible with MultitrackStudio for Windows/macOS.
• Lyrics/chords prompter and editor.
• Also works with mouse/trackpad/keyboard (requires iPadOS 13.4).

The Pro Extension (available as in-app purchase) adds these features:
• Up to 64 tracks.
• Up to 3 extra Effect Slots. (*)
• Up to 3 extra Effect Returns. (*)
• Up to 8 Groups. (*)
• Multichannel audio playback. (*)
• Mixer and effect automation.
• Audio pitch shifting in track editors.
• Time stretching in track editors.
• Tempo editor can process audio tracks.
• Stretch and Stretch Accelerando in tempo editor.
• Multi MIDI Editor (edit multiple tracks in a single editor)..
• Convolutor effect with Vintage Reverbs.
• Load custom speaker IR in Guitar Amp.
• Sidechain input on Compressor and AU effects that support it.
• Dynamics effect, supports sidechaining.
• Multiband Compressor effect.
• Auto Wah effect.
• Phase Inverter effect.
• Transposer effect.
• Vocal Tuner effect.
• Sample rate conversion in Export Mix dialog.
• Create new song using current as template.
• Remote Control for transport ("MIDI Learn")
(*) Limited by iPad screen size. There's just one additional space on iPad smaller iPads. 10.5" iPads have two spaces, 12.9" iPads have three spaces.
An Effect Slot, an Effect Return and the Output Selector (for groups and multichannel playback) take one space each.