Can you follow routes offline?

No. Awesome Maps is focused on viewing maps on Garmin devices. It can show a recent route “snail trail”, but does not (yet) allow routes to be uploaded and followed within Awesome Maps. It is not an equivalent to on-device TopoActive maps for offline use, dynamic routing and similar.

Do you need a mobile data connection?

On first load, yes. Mobile data is required to download the initial map data wherever the user is. That data is then cached for speed and to limit further data downloads until the zoom level or map type changes.

How much does Awesome Maps cost?

Awesome Maps is a freemium app. The trial version offers full functionality with monthly limits. Unlimited access is £3.49 per three months, or £4.99 with premium maps included, with annual discounts available. The same per-device licence covers both the glance/widget and the datafield app, doubling the monthly free limit if used together. Premium providers like Ordnance Survey require paid licensing, which is why not everything can be free.