WriterDuet vs BIFF

A simple and intuitive interface lets you dive into writing instantly on the go or as you lay in bed and stare at your phone screen (check out dark editor if that's you). While we've focused on ease of use for mobile, we also haven't restricted you from taking advantage of all of the power that WriterDuet has to offer on other platforms. So go wild! Industry-standard, secure, and intuitive screenwriting software. Features: • Real-time collaboration between users and devices • Smart line types and one-touch icons • Auto-save • Card outliner • Export from any point in history • Offline mode • Filter by line type or with custom tags • Scene & Location, Character Reports • Automatic statistics • Revision Drafts and Auto-Snapshots Testimonials: "WriterDuet is the most intuitive, most user-friendly scriptwriting software I’ve ever used.” – Ed Solomon (Men in Black, Bill & Ted’s Excellent Adventure) “WriterDuet helped me escape Final Draft. Being web-based gives me the flexibility to write anywhere on any system. And I never have to worry about crashes and lost hours of work ever again. ... I recommend it to every other screenwriter I meet.” – Christopher Ford (SpiderMan: Homecoming, Robot & Frank) “The app saves my whole thought process for me. On top of that, these guys are iterating the app so fast, they're running circles around the industry leader. WriterDuet definitely feels like the future.” – Andy Bobrow (Community, Malcolm in the Middle, Last Man On Earth) "WriterDuet combines instinct and user-friendliness for a unique and exhilarating way for writers to collaborate, whether in real-time or in non-synchronized work. It has features that are vital for teamwork in scriptwriting. It's a meticulously-created gem, and a must-have for collaborations" - Jim Uhls (Fight Club) “Do yourself a favor and use WriterDuet.” – Alisha Brophy & Scott Miles (Nicholl Fellowship 2014 winners, White Girl Problems)

BIFF is a behavior-aware planner with receipts. The free plan lets you schedule up to 5 task blocks per day. BIFF Plus is an auto-renewable subscription that unlocks unlimited daily task blocks when five is not enough. BIFF tracks the gap between what you planned and what you actually did, then adapts future scheduling around your real patterns. The live scoring path stays deterministic and inspectable, so recommendations can explain themselves instead of feeling random. BIFF is not a generic calendar. It notices overloaded days, fake morning plans, repeat misses, and the slots you keep ignoring. It keeps score, surfaces the pattern, and lets you edit everything manually. Free BIFF includes: • planning up to 5 task blocks per day • manual tasks, recurring tasks, and work schedule setup • task instances with done, snooze, skip, and reschedule tracking • planner and receipts views with behavior-aware recommendations • explanation text and score breakdowns for optimizer moves • weekly recap and behavior stats built from actual task history BIFF Plus includes: • unlimited daily task blocks • Apple-managed purchase, cancellation, and restore BIFF does not use an LLM in the live scheduling loop. Scheduling remains deterministic. Future model work is still shadow-only, and the current product logic is heuristic-first and fully explainable. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://biff-site.vercel.app/privacy