Glitch Forced Unauthorized In-App Purchase

Extensive content is available, but it requires additional downloads and most calls are unlocked only via in-app purchase. The free app froze upon first use, then showed the following message: "Purchase Successful! ... Youve unlocked...". I made no attempt to make any purchase and I confirmed nothing, so any charge would be completely unauthorized. I immediately deleted the app, and I hope for their sake that they dont try to charge my account.

DIYhobbit about Bird Songs - Bird Call & Guide