Strng is a string synthesizer app for iPhone that is inspired by the karplus-strong algorithm. Unlike traditional synthesizers that use samples, Strng generates plucked string-like sounds using a physical modeling approach. The synthesis engine starts with a short burst of noise, which is then guided by a tuned delay buffer and string tension filter.

One of the standout features of Strng is its 16-voice polyphony, allowing you to create complex and layered string sounds. The app provides multiple ways to control the synthesizer, including an in-app 25-key chromatic keyboard and the ability to connect your preferred MIDI controller through USB or Wi-Fi.

In addition to its powerful synthesis capabilities, Strng offers two post-effects to further shape your sound. The first is a ping-pong stereo delay, which adds depth and spaciousness to your sounds. The second is a two-channel resonant filter controlled by two LFOs, allowing for dynamic filtering and modulation possibilities.

Strng seamlessly integrates with other music apps through Audiobus, Inter-App Audio, and AUv3. It also supports Core MIDI, Bluetooth MIDI, and limited MPE (MIDI Polyphonic Expression) for enhanced MIDI control. With its intuitive interface, factory presets, and the ability to save and load your own settings, Strng is a versatile tool for musicians and sound designers alike.