You can check the list of available clients on https://nostr.how/en/clients

For apps focusing only on messages with your peers, I recently bump into https://www.nostrchat.io/ and [save it as PWA on your device](https://help.shore.com/en/how-do-i-save-the-pwa-on-my-smartphone) - where you'll NOT use your `nsec` to login but indeed only the `npub`


supratic

nostr

Is there any nostr client to replace Whatsapp and Telegram?

Is it possible to build that and even hash the messages so that they are readable only to own contacts/groups?