Cronicular uses Apple's Standard Licensed Application End User License Agreement, which is the default for all apps distributed via the App Store unless the developer provides a custom EULA.
The full text is here: Apple's Standard EULA.
In summary, the agreement is between you and Crucible (the licensor), governs your right to use Cronicular on Apple devices you control, prohibits reverse-engineering, and limits Crucible's liability to the purchase price you paid (which may be £0 if you use the free tier).
Legal queries: support@cronicular.com