Signal now has 310 active users who use the service to schedule and recycle their tweets.
The great thing about that is paid users are growing work it. We're at a ~<11% conversion rate from free to paid; for every 11 active user, we have converted a paid user.
The other great thing about it is that it's all organic. I haven't even added a new feature or made any major code changes in at least the last month.