Echo String is a cross between an electric harp and piano. Like many apps it takes a few minutes to wrap your head around the design, but once you have that “Ah HA!” moment, the fun really begins.
In fact, Echo String can be considered an instrument onto itself, with its own technique that needs to be developed over time. While it is easy to play chords and melodies, it is also very likely you will hit adjacent – unintended – notes as you play. Players with larger fingers will have this problem. The good news is that the layout makes it impossible to play a “wrong” note, and there is always some musicality to what is played, making it good for improvising.
The built-in record option doesn’t appear to have a click, and there is no count-in – but it appears that recording begins with the first note played. Below is a picture of the app in use. Here’s an example from a recent Signals with Shivasongster broadcast: