Otoo vs Resamplr

Otoo is a streamlined, one-screen groovebox designed for frictionless music production. Built around an innovative free-form step sequencer, Otoo breaks away from rigid grids, allowing you to place, drag, and stack notes freely across independent rows. Whether you are sketching out ideas using the native built-in engine and sampler or hosting your favorite third-party AUv3 plugins, Otoo delivers a distraction-free environment that prioritizes speed and musical flow. On iPhone, the interface dynamically scales to give your AUv3 instruments a near-fullscreen home, paired with a compact, highly responsive keyboard for immediate creation on the go. Otoo also includes Otoo MIDI, an AUv3 MIDI processor version of the app. It brings Otoo’s pattern-based sequencing into compatible AUv3 hosts, where playback follows the host timeline and instruments are routed as MIDI Out destinations instead of audio instruments. Distraction-Free Workflow • The single-screen layout keeps your sequence, arrangement and mixer visible at all times so you never have to dive into menus. • A free-form step sequencer lets you place, drag, and stack notes across any row without rigid instrument or track restrictions. • Step editing mode gives you precise control over note length, velocity, and timing subdivisions. • The gesture-driven mixer allows for quick volume adjustments, muting, and soloing directly from the main grid. • 4 rows on iPhone and 5 on iPad, with multiple instruments available in each row at different steps 
• 2-octave keyboard for playing and learning real notes Sounds and plug-ins 
• Up to 8 instruments per project
 • Built-in sounds and sampler
 • Use any installed AUv3 instruments in a large, near-fullscreen view with a compact keyboard 
• Up to 2 AUv3 effects per instrument
 • Sampler with instant key-by-key recording and chromatic mapping Patterns to full songs
 • Build songs from simple patterns
 • Draggable loop markers for quick arrangement changes Performance mode
 • Live sequencer and audio effects such as reverse, beat repeat, randomize, swing, triplet, tape, and more
 • Play the pattern like a keyboard by tapping steps directly Other features • Main output with built-in level protection • Automatic metronome when recording live into empty patterns • Export patterns or full songs as WAV or MP3 for easy sharing • Export performances as perfect loops • MIDI export • Supported time signatures: 4/4, 3/4, 4/4T and sequencer swing.

Resamplr is a fast, hardware-inspired sampler and beatmaking app for iPhone and iPad. Capture ideas quickly, shape them on a 4x4 pad workflow, and keep moving from sampling to sequencing to resampling without ever breaking flow. 2.0 turns Resamplr into a full workstation. Lay your beats and loops onto audio tracks with a proper timeline, record straight in through the mic or an audio interface, warp anything to tempo, and host your favourite AUv3 instruments and effects right inside the app. Load sounds from the built-in library, import your own files, or extract audio from video. Drop a loop in and it auto-warps to your project tempo at the right bar count — no manual correction. Record through the microphone or a connected audio interface with live input metering, threshold recording, and quick pad assignment. Chop samples non-destructively, build layered pads, tweak pitch, filters, envelopes, playback modes, and bus routing. Lock a pad's pitch independently of its speed with Sharp and Smooth timestretch modes, then sequence patterns with velocity, probability, ratchets, and live performance controls like 16 Levels and Roll. Scratch and perform on the deck, and when a pattern hits, resample it back to a pad and keep transforming it. Resamplr also includes flexible FX buses, output processing, song arrangement, project saving, skipback capture, a light/dark theme, and offline export for sequences, songs, audio tracks, or individual pads. Features: 4x4 pad sampler workflow built for fast beat making Audio tracks with a full timeline — record, arrange, loop, and trim clips Timestretch and keylock — independent pitch and tempo per pad, with Sharp and Smooth modes Auto-warp loops to tempo on import, at the right bar count Host third-party AUv3 instruments and effects Built-in sounds plus import from Files and video audio extraction Mic and audio interface recording with live meters and threshold capture Sample chopping, layering, trimming, and waveform editing Turntable-style deck for scratching and performance Pattern sequencing with velocity, probability, ratchets, and nudge Conditional trigs and polyrhythms / per-pad step lengths 16 Levels, Roll, resampling, and replay capture Bus FX, output processing, song mode, and WAV export Performance FX with automation per sequence and export Parameter locks per step, per sequence with export Effect automation MIDI in & out with fully custom mapping Audio Mixer to dial in your mix Play and sample from classic games Set Key, Scale and Chords per pad or project Deep Arpeggiaotor for samples and AUV3