Full of bugs!
While i appreciate a lot the guidebooks, this app is clearly not finished. I bought a london guide via in-app purchase for 4.99€ - the guide shows "purchased" but is NOT ACCESSIBLE even after re-download and re-login; plenty of cryptic error messages "failed" "network connection lost" while on wifi, no "restore purchases" function etc; Hopefully some future update will fix this, in the meantime don't waste your money!!!