How private is this?

Current app version: 0.5 / launch

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For our launch version, your Addresso Book exists on just one browser on the device you started it on. That’s it. You will lose your Addresso Book irrecoverably if you clear your browser data or specifically clear data for my.addresso.com. Getting your Addresso Book sync’d across all your devices is a top priority for the next release. Not long now.

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The first paragraph on our Privacy Policy webpage reads …

Privacy isn't just a compliance checkbox for us. It's one of the fundamental reasons we exist and do what we do. Our dedication to making Addresso available as a local-first application is the biggest manifestation of this.

Local-first means:

You’re in sole control of all the data you add and manage in Addresso (or have shared control once collaborative Addresso Books are available)
Local storage and local networks are prioritised over servers in remote datacenters
Whether to ever sync with a remote server for whatever reason is entirely your choice
If you do sync with a remote server, your local storage remains the authoritative source
Whenever you sync with a remote server or maintain an Addresso Book with others (future feature), no information relating to your own wallets ever leaves your own devices.

Let’s look at that last one in more detail.

Addresso helps you store and organize wallet and smart contract addresses, and in light of wallet proliferation we know that increasingly includes help managing your very own.

At the same time it must remain impossible for anyone to correlate your wallet addresses, and the best way to guarantee that is to ensure such information NEVER leaves your own devices. Not possible. Not happening. No way. Never.

Combine this with our security approach (see How secure is this?) and the facts that we don’t know who you are, don’t have any contact details for you, and don’t try to learn anything other than understanding how well Addresso is meeting everyone’s needs, and it becomes difficult to think of any privacy expectation Addresso doesn’t meet.