Built a privacy-first, local-only crypto dashboard to replace my Excel sheets

[Arsouille]

Hi everyone,

I’ve been managing my crypto portfolio for a while, but I could never find the right tool.
Most trackers are either too bloated or, more importantly, they require me to upload my wallet addresses, exchange APIs, and balance data to their servers.
I’m not comfortable with that, so I decided to build my own solution from scratch.

I’ve developed a 100% privacy-focused dashboard where your sensitive data stays on your machine, not on servers.

How it works & Security:
•   Authentication: I use Supabase to handle user accounts (email/password). However, email verification is not enabled, meaning you can use a fake or burner email address if you prefer to remain completely anonymous.
•   Local-Only Storage: All the data you enter (portfolios, transaction types, cost basis) is stored exclusively in your browser’s localStorage or IndexedDB. No sensitive financial data regarding your positions is ever saved on Internet.
•   Real-Time Widgets: A modular dashboard to track up to 24 assets in real-time, complete with custom price threshold alerts.
•   Portfolio Segmentation: Categorize your assets by source (Cold Wallets, Ledger, Binance, etc.) and by type (Staking, Trading, Cold Storage) to get a clear view of your performance.
•   Blockchain Auto-Scan: The tool includes an auto-scan feature to pull balances directly from the blockchain for specific public addresses.

The project is still in its early stages, and I am currently looking for feedback from the community—whether it’s bug reports, UI/UX suggestions, or missing features that you feel are necessary for daily tracking.
If you'd like to test it out or take a look at the architecture, you can find the live project here: https://ourcryptowallet.vercel.app

I am a solo developer working on this as a passion project. Any constructive criticism or feedback is highly appreciated!

Thanks for your help

[SFR10]

The project is still in its early stages, and I am currently looking for feedback from the community—whether it’s bug reports, UI/UX suggestions, or missing features that you feel are necessary for daily tracking.

If this is in its infancy, I'm very impressed ^{[e.g., I like how interval updates are quite short (I hope there aren't any limits when our portfolio grows)]}... I quickly went over its features and believe you've covered everything.
^{- The only UI/UX suggestion that I give is that it'd be nice if the breakdown pie chart isn't pushed down when more rows are added.}

[noorman0]

The interface is very intuitive. I can think of a few things that could make it better (suggestions):
- Users can open price charts and trading tools as full-screen pop-ups (and it allows for local analysis history saving).
- Crypto news is placed outside the coin monitor box; I think having running text above the box is quite nice.

However, it would be a fantastic project if it were developed more seriously and had its own domain.

[hugeblack]

For a solo developer, this seems great; it's better than those "free" services full of ads or spam emails.

Are you planning to add ways to receive notifications?

I didn't understand the part about:

fetch the balance of each public address you enter, directly from free, public blockchain explorers (no API key).

Would it make a difference if it's via API or not? And since you're focusing on privacy, it would be better to offer the option of connecting your full node or via Tor.