FDCTool is a one-click video and picture editing app available on iPhone. It offers a wide range of editing functions for both videos and images. With this app, users can easily add or remove watermarks from their videos and images. The app also provides other video editing features such as video MD5 modification, video mirroring, video reverse playback, video speed change, video filters, and video cropping. For image editing, it offers functions like image watermarking, image text recognition, image mosaic, and image cropping.

FDCTool is a free app, but it does offer an option to upgrade to a membership to remove advertisements and access additional services. The membership subscription is priced at 6 yuan per month, with a free trial available. Users can cancel the subscription at any time in their account settings.

Please note that the Terms of Service and Privacy Agreement for FDCTool can be found at the following links: