hello ivy is described as 'A beautiful, uncluttered all-in-one tool. Write, plan, take notes, capture ideas and get organized' and is a Note-taking Tool in the Office & Productivity category. There are more than 100 alternatives to hello ivy for a variety of platforms, including Windows, Mac, Android, iPhone and Online / Web-based. Most alternatives are Note-taking Tools and Todo List Managers. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Google Keep. Other great apps like hello ivy are Obsidian (Free Personal), Microsoft OneNote (Freemium), Simplenote (Free, Open Source) and CherryTree (Free, 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.