UbikFocus is described as 'for iPhone/iPad is the perfect tool for your task management! Organize and track your tasks by projects, folders, contexts, persons or dates without adding any extra work' and is a Todo List Manager in the Office & Productivity category. There are more than 50 alternatives to UbikFocus for a variety of platforms, including Windows, Android, iPhone, iPad and Online / Web-based. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Microsoft OneNote. Other great apps like UbikFocus are Evernote (Freemium), CherryTree (Free, Open Source), NoteLedge (Freemium) and Cryptee (Freemium, Open Source).
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.
Notezilla is the leading sticky notes app for Windows, Android, iPhone/iPad and the web. Set reminders to sticky notes, Pin sticky notes, attach them to websites, docs & folders, sync between PCs and other devices, organize using folders and tags.