Crypto Tracker
date
Jul 28, 2025
type
Project
year
2025
slug
crypto-tracker
status
Published
tags
Blockchain
Website
PWA
summary
Track the current value of your crypto holdings across all chains
I made another little web tool, mostly for my own use: Crypto Tracker!
It’s a Progressive Web App (PWA) that allows users to track their cryptocurrency holdings by entering either specific amounts (”1.5 ETH”) or their public wallet addresses.
The app provides:
- Real-time value updates
- Converted value to your currency of choice
No private data is needed, not even for wallet tracking as all you need to track wallet contents is the public wallet addresses (and the app warns you not to enter secret keys or mnemonic seed phrases).
The entire app works just fine with all data being only stored in the local browser. There are options to ⬆️ Export to JSON and ⬇️ Import from JSON should you want to move your data or make a backup. There’s also an Export button on the Portfolio page that allows you to export the actual portfolio with current values as a PDF.
Responsive design makes this app work great on mobile devices and being a Progressive Web App it can be installed and even used offline.
For convenience I also added a way to sync a Portfolio across multiple devices. You can do this by creating an account, which syncs the data to the cloud. (I use Firebase Authentication for login and data goes into a Firebase Cloud Datastore)
Give it a go!
