This may help:
Menu > Numbers > About Numbers > License Agreement
Ask a lawyer for advice.
Also have a look here:
Unsolicited Ideas policy Legal - Unsolicited Idea Submission Policy - Apple
Apple or any of its employees do not accept or consider unsolicited ideas, including ideas for new advertising campaigns, new promotions, new or improved products or technologies, product enhancements, processes, materials, marketing plans or new product names. Please do not submit any unsolicited ideas, original creative artwork, suggestions or other works (“submissions”) in any form to Apple or any of its employees.