Short, because there is not much to agree to.
A licence to use FigDex on devices you own. The free version identifies ten figures and holds twenty-five; the one-time purchase lifts those limits. There is no subscription and nothing renews.
The app matches a photograph against a catalogue and tells you how confident it is. It can be wrong, and it is built to say so rather than to sound certain. Check anything that matters before you buy or sell on the strength of it.
Common, Uncommon, Rare and Legendary are computed from catalogue data by a rule printed inside the app. They describe how hard a figure is to come by. They are not a valuation, and nothing in this app is advice about what anything is worth.
LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize or endorse this app. FigDex is not affiliated with the LEGO Group.
Catalogue data is sourced from Rebrickable and used under their terms, with attribution given in the app and here.
The app is provided as it is. Refunds are handled by Apple under the App Store's own terms.