Threadalog is an embroidery thread catalog and organizer designed for iPhone users. It allows you to manage your threads and fabrics for various types of embroidery, such as cross-stitching. The app enables users to create shopping lists, search for threads using specific criteria like brand, color, or type, and identify similar colors efficiently.

With Threadalog's free features, users can keep track of DMC and Anchor solid cotton floss colors, receive low stash warnings, and filter their shopping lists based on required time frames. The basic version expands thread options, offers iCloud data backup, and enables color matching across different brands. Moreover, the pro version includes fabric search and management capabilities.

Please note that Threadalog Basic and Pro offer additional features through optional subscriptions. Users can manage their subscriptions and payment settings through the App Store. For accurate color matching, it's recommended to refer to actual thread samples as displayed colors may vary in real life.