StoryStack: TBR Book Tracker positions itself as a comprehensive digital solution for readers seeking to organize their literary collections and reading habits. Developed by Astralab Studios, this iOS application addresses the common challenge of managing growing to-be-read piles while providing meaningful insights into reading patterns. The application's core functionality revolves around four intelligent organizational categories: TBR (To Be Read), Currently Reading, Finished, and Did Not Finish shelves. Users can add books through multiple methods including ISBN scanning, link pasting from major retailers, or manual search. The system supports unlimited custom tagging for specific use cases such as genre classification, book club selections, buddy reads, and annual reading challenges. Reading statistics and time tracking provide quantitative insights into reading habits. User experience demonstrates thoughtful design with intuitive navigation between shelves and seamless book addition workflows. The interface maintains visual clarity while handling extensive personal libraries. Real-world usage patterns show particular strength for users managing hybrid physical/digital collections through library services like Libby, with seamless integration between reading tracking and journaling capabilities including note-taking, quote preservation, and definition tracking. User feedback consistently highlights the application's effectiveness compared to broader social reading platforms. Emillionaire14 noted on June 5, 2025 that the app eliminates the need to 'mark random books as read just to meet goals' while praising the TBR organization. Similarly, 2poundsofpasta emphasized on June 2, 2025 the application's strength in 'tracking data' and organizing personal libraries alongside reading time monitoring. The application demonstrates notable strengths in its flexible organization system and detailed tracking capabilities, though some users might desire expanded social features or cross-platform availability beyond iOS. StoryStack proves most valuable for dedicated readers maintaining substantial personal libraries, participants in structured reading challenges, and those seeking detailed reading analytics beyond basic completion tracking.