Get in touch.
Bug report, a question before buying, or something else — email goes straight to the person who builds these, not a support queue.
director@easyliving.film
Mention which app you're writing about if it's specific to one — it gets you a faster, more useful answer.
Looking for something else first?
The FAQ covers the most common questions — accounts, pricing, privacy, refunds. Each app's own page also links to its specific privacy policy and support page.