Something broken, an idea, or a question? Write to apps@ibacrea.com and a human will read it.
It helps enormously if you mention your device, the version of the operating system, and what you were doing when it went wrong.
Common questions
Where did my progress go? Progress is stored on the device only, so it does not travel between devices and is lost if the app is uninstalled.
How do I stop the anonymous usage data? Settings → Privacy → Share anonymous usage data.