Privatefolio lets you track your assets across blockchains and exchanges.
Import your data and let the app do the rest — calculate your historical net worth, profits, losses, taxes and more.
How?
Privatefolio is a local-first app, there is no server you data needs to travel to, it all happens right into your browser.
It leverages three kinds of public APIs:
APIs for asset prices: Binance, Coinbase & DeFi-Llama — Redstone, Pyth coming soon.
APIs for asset metadata: Coingecko (such as logo images, websites, descriptions).
APIs for user data: Etherscan, Binance Account API.
It also makes use of IndexedDB, which allows for high amounts of data to be stored in the browser. How much? Chrome and Chromium-based browsers allow up to 80% of disk space, i.e. on a 500GB laptop a web app can use a maximum of 400GB.
Does it scale?
Using public APIs can be challenging, for example Coingecko's stingy free tier, nonetheless, with the use of a local cache (which works ok for metadata) we can get good user experience.
Fetching historical asset prices using Coinbase & Binance scales even if you have transacted hundreds of assets, for example, if you fetch the all daily candles of 100 assets for the past 6 years within the same minute, you would only use 10% of Binance's rate limit.
Fetching user data using Etherscan works great even for users with millions of transactions. Their public API allows up to 5 calls per second and 1 call can retrieve up to 10,000 records. Binance on the other hand is quite limiting and syncing an account can take many hours, but this is a challenge shared by all the portfolio trackers on the market.
Read more about rate limits on GitHub.
The answer is yes.
Why?
Back in November 2023 I was looking for other options beyond delta.app to use as a portfolio tracker, that is because:
I have to check 3 different apps to get an overview of my assets.
Delta reports my Binance balances inaccurately (it ignores Futures data).
I cannot create a pull request and extend Delta.
Other open-source alternatives like rotki.com lack good UI/UX.
In October 2023, the TradingView team has released a plugin system for their amazing open-source charting library called lightweight-charts. This library is what powers Privatefolio today and what made features like measuring an arbitrary net worth change possible:
What's next?
If there is enough interest from people to use this product I will continue hacking on it.
You can reach out via email at hello@danielconstantin.net, start a discussion on Discord, or message me on Twitter.
Please share any positive feedback, negative feedback, thoughts or ideas.
What would you like to see next?
Consider donating through Gitcoin
Privatefolio is participating in GG20. Donations will be matched using a quadratic funding mechanism, hence, small donations can have a big impact.
GG20 takes place from April 26 - May 7, 2024.
