Contacts
ReMuse Contacts icon

ReMuse Contacts

Your contacts, on your server.

Free iPhone · Mac
Coming to the App Store

Your address book belongs to you

Your contacts are more than a list of names and phone numbers. They’re a record of every relationship you’ve maintained, every colleague you’ve worked with, every person who matters to you. That record deserves to be somewhere you control.

ReMuse Contacts is a native iPhone and Mac app that syncs your address book to your own Nextcloud server using the open CardDAV standard. Your contacts are stored as standard vCard files — portable, readable, and entirely yours. We never see them.

A complete contacts experience

ReMuse Contacts supports the full range of contact fields you’d expect: names and phonetic names, phone numbers and email addresses, postal addresses and URLs, social profiles, instant messaging handles, relationships, birthday and anniversary, notes, contact photos, and groups.

Social profiles include LinkedIn, Instagram, GitHub, Mastodon, YouTube, and TikTok. Messaging handles include WhatsApp, Telegram, Signal, iMessage, and Discord. If a field matters to how you stay in touch with someone, it’s here.

On iPhone, tap a phone number to call or send a message. Tap an address to open it in Maps. Tap a URL to open it in the browser. Every field does something useful.

Native on iPhone and Mac

ReMuse Contacts is a genuine multiplatform app — not a scaled-up iPhone layout on the Mac, and not a shrunken desktop app on your phone. The Mac version uses a three-column NavigationSplitView with a sidebar, contact list, and detail panel. The iPhone version uses familiar swipe gestures and the platform’s native conventions throughout.

On Mac, phone-number actions gracefully adapt: what’s a tap-to-call on iPhone becomes a copy-to-clipboard action on macOS, where that’s actually useful.

Sync and import

Sync connects to your Nextcloud server using delta sync — only changed contacts download on each sync. The app discovers all address books on your Nextcloud and lets you choose which one to work with. Changes made offline queue locally and upload on the next sync.

Import contacts from .vcf files shared via Files or AirDrop, with duplicate detection so you don’t end up with two records for the same person. Export a single contact or your entire address book via the iOS share sheet as a standard vCard file.

Privacy and security

ReMuse Contacts uses Nextcloud’s Login Flow v2 — a secure browser-based authentication — so your real Nextcloud password never enters the app. Your app password is stored in the system Keychain under a fixed account key.

The app supports Face ID and Touch ID to lock it at rest, with a configurable inactivity timeout. There are no third-party SDKs, no analytics libraries, and no advertising frameworks anywhere in the binary. Every line of code, including the CardDAV and vCard implementations, was written by us.

The app also supports Handoff — viewing a contact on your iPhone and picking it up on your Mac, or vice versa, works exactly as you’d expect.

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