Randgrid have updated their app to version 0.8 with some fixes to the synth engine.
However, according the this thread at the noise IO site there’s more to come:
I have some news about Randgrid, an update will be released to Apple for approval this week.
It will include:
– multiple patterns
– file manager
– song sequencer
and many more features are planned or being developed as we speak.
I hope they add WAV export too of course, but perhaps we should let them get one big update out first.