I read through the comments, here are the "core" issues/features an app like that has to meet:

- 1. Fast startup - 2. Fast adding an extra note - 3. Editing - 4. Sync - 5. Crossplatform - 6. Easy to forward messages - 7. Stable/Trusted/(Encrypted?)

2, 4, and 5 are the main ones probably

- Telegram lacks 1 (fyi I use telegram) - WhatsApp lacks 1 and kinda 3 - Discord lacks 1 2 and 6 (I don't remember discord working well offline) - All other note apps lack 2, 4, and 5 (core features) and focus on markup instead.

Feature 1 - fast startup seems to be the only problem with existing messengers. The best solution would be a custom crossplatform telegram client or similar that piggybacks off existing trusted messengers for sync etc.