Tandem turns your iPhone or iPad into a powerful MIDI controller you can design in minutes—then actually trust on stage. Build custom layouts, map anything, save presets, and perform with motion, snapshots, and real-time collaboration. BUILD ANY CONTROLLER • Start from blueprints or a blank canvas and add knobs, faders, XY pads, drum pads, buttons/toggles, momentary buttons, endless encoders, transport, and motion (gyroscope). • Create compact performance rigs, full mixer pages, synth macro panels, or drum racks—then save them as reusable presets. FAST, CLEAN WORKFLOW • Smart snapping, responsive grids, spacing tools, and Focus Mode keep editing quick and performance precise. • Zoom into a single control for accurate takes and fast MIDI Learn. • Dashboard Hints + a replayable Tutorial Walkthrough help you level up as you go. LAYOUTS THAT START YOU AHEAD • Layout Maker includes curated templates (mixers, synth rigs, drum racks, dashboards). • Layout Assistant (iOS 26+ on eligible devices) can generate balanced layouts from plain-English prompts when Apple Intelligence is available. • Smart MIDI setup: new components can auto-assign to unused mappings so you stay in flow. STATE SNAPSHOTS + MORPHING (THE “WHY TANDEM” FEATURE) • Save up to 8 states of your entire layout (all control values). • Jump instantly—or use a Morph Driver to smoothly interpolate between states with a single slider/knob. RANDOMIZATION YOU CAN PLAY • Map “Randomize” to any button or pad. • Trigger smart randomization for happy accidents, sound design, and live performance moments. COLLABORATE IN REAL TIME • Tandem Mode lets you host or join a session so multiple devices can share and control the same layout together—great for bands, classrooms, and writing rooms. THEMES THAT PERFORM • Stage-ready, high-contrast themes plus an improved Theme Manager and redesigned Theme Maker. • Import/export themes and preset packages to share looks and workflows. CONNECTIVITY • USB-C, Bluetooth MIDI, and Wi-Fi options. • Background processing helps keep MIDI flowing while you work. WHY IT’S DIFFERENT Tandem isn’t just “a controller.” It’s a controller builder with performance features you usually only get from hardware: snapshots, morphing, randomization, and collaboration—wrapped in a fast layout workflow you’ll actually stick with. Design your ultimate MIDI controller, save your looks, morph whole layouts, and play anywhere—solo or together.