Drafted with AI from the Nemos app and its documentation. Details about other apps can change, so check their sites.
Keep's strength is speed. Sticky-note cards, labels, simple reminders, and it opens everywhere you have a browser. If you share lists with someone on Android, that counts for a lot, and Nemos cannot do it.
On an iPhone-only setup, Keep can feel like a visitor. Nemos uses the share sheet from any app, with previews for links including Instagram and TikTok. It reads text inside screenshots on your device, records voice with transcripts, and shows reminders on the Lock Screen. Your library stays in your own iCloud, not a Google account.
Keep's notes are small by design. Nemos is a larger app, and it holds PDFs, documents, places and routines, which also means more to learn.
You can get your Keep notes out with Google Takeout and bring text files into Nemos with the generic import, though labels may not carry over. When something else fits better: Apple Notes is the closest like-for-like move if all you use are quick notes and checklists.