The 叮咚动态壁纸-热门动态壁纸精选 app is a free lifestyle app available on the iPhone platform. It offers a wide range of dynamic wallpapers that are updated daily with popular videos from the internet. With carefully curated categories, users can easily find the dynamic wallpapers they are looking for.

One of the key features of this app is the ability to convert videos, whether recorded or from the photo library, into dynamic wallpapers. However, it's important to note that the dynamic wallpapers can only be set as lock screen wallpapers. Once set, users need to press the screen to activate the dynamic effect. It's also worth mentioning that the dynamic wallpapers do not support sound playback and setting a dynamic wallpaper for the main screen will automatically convert it into a static wallpaper.

Please note that the app offers a subscription option called "Dynamic Wallpaper Annual Membership" priced at ￥168 per year. The subscription comes with a 7-day free trial period and will automatically renew after the trial ends. Users can manage their subscription and payment settings through their iTunes account.

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