The string you provided appears to be a specific filename for an older version of the app for iOS. The name suggests it is an IPA file (iOS application archive) for the Pro version, specifically version 9.0 (or similar), designed to be compatible with 64-bit architecture and iOS 9.0 or later.
: It can be set to follow only one hand while the app automatically plays the other, or to automate complex left-hand pressing actions.
The "Pro" version of this app is highly regarded for its realistic simulation of the traditional Chinese zither. Notable features include:
: Indicates it is a Universal binary (working on both iPhone and iPad) optimized for 64-bit processors. IPA : The standard file format used for iOS applications.
: Supports Pluck, Glissando, Tremolo (Shake), and Overtones.
: This is likely a unique internal ID or build number associated with the developer's release.
: Allows for Pitch Slides, Vibrato (Small and Big), and "Dian Yin" (Tap Pitch) effects.