ThinkBook is described as 'transforms your iOS device into an organizational marvel. Create notebooks and outlines that live and breathe under your fingertips. It has todos but it also lets you take notes, organize them into outlines, make projects from them and track your progress' and is an app in the Office & Productivity category. There are three alternatives to ThinkBook for iPad, iPhone, Mac, Windows and Apple Watch. The best alternative is ThinkComposer, which is both free and Open Source. Other great apps like ThinkBook are Drafts (Freemium) and ProjectBook (Paid).
Create deep visual documents, adaptable and multi-level diagrams, flowcharts, concept maps, mind maps and models. Users can: - Define their own types of nodes and connectors, to reuse nomenclature, symbols, details structure.
Drafts, where text starts. Quickly capture text and send it almost anywhere! Drafts lets you turn text into action – it’s a quick notebook, handy editor, and writing automation tool, all in one. Open it and write right away, and create.