Desktop + mobile reviewShow a utility in the context where it will be used, and distinguish explanatory controls from the download action.
A closer look
Canopy & Stars.
Keep exploring
A few more to get you thinking.
Desktop + mobile review
Desktop + mobile reviewUse recognizable devices to explain a multi-platform product, then provide direct routes to the relevant platform rather than one vague start action.
Desktop + mobile reviewDistinguish the visitor’s practical task from the organization’s fundraising task without making either compete with the heading.