Crypto Portfolio Tracker · Private by Design
Your Crypto Portfolio.
Private Encrypted 100% YoursStill checking every wallet separately? One place for all your crypto — set up in minutes. Export as an encrypted file. No account. Nothing stored on our end.
How it works
From wallet to portfolio in seconds.
- Give your wallet a name
- Paste a public address or xpub key
- Chain auto-detected — xpub tracks all derived addresses
- Add as many wallets as you want
$0
- All wallets in one clean overview
- Live prices across all 8 chains
- Total portfolio value at a glance
- No account, no login — always instant
Want to save your portfolio or use it on another device?
Export it as an encrypted file — one click, fully protected.
- Set a password you'll remember
- Download your
.jsonfile - AES-256 encrypted — only you can open it
- Save it anywhere: cloud, USB, local disk
Coming back or switching devices? Import your .json file,
enter your password — your entire portfolio is right back.
- Drop your
.jsonfile into the app - Enter your password
- All wallets restored instantly
- Make changes anytime, export again when done
Features
Built for privacy.
Built for everyone.
Every feature designed around one principle: your data belongs to you.
Encrypted Data Export
Your portfolio data never touches our servers – ever. Export everything as a password-protected, AES-encrypted file. You hold the key. We hold nothing.
No Account. No KYC. No Trace.
Add any wallet address or xpub key and start tracking in seconds. No email, no phone number, no identity verification. 21 Stealth never knows who you are – by design.
8 Chains, One Dashboard
Bitcoin, Ethereum, Solana, Litecoin, Dogecoin, TRON, USDT and USDC – all your balances in one view. Cold wallets alongside hot wallets.
Open Source & Self-Hostable
Don't trust us? Don't have to. 21 Stealth is fully open source. Inspect the code, run your own instance, or contribute.
Historical Portfolio Analysis
See how your holdings performed over 2000 days. Historical prices for all supported assets, rendered as a clean interactive chart.
Real-Time Data, No API Key
Live crypto prices for all 8 supported assets, updated every 5 minutes via CoinGecko. No configuration needed.
About
We built the tracker we wanted
to use ourselves.
Most crypto portfolio trackers ask for an account, an email, or worse – identity documents – just to show you your own wallet balances. That never made sense to us.
21 Stealth is different. We built it for crypto holders of all kinds: traders who move between chains, long-term holders with cold wallets, and anyone who simply wants to know what their portfolio is worth – without handing over personal data.
We store nothing on our servers. Your data belongs to you: exportable, encrypted, and fully portable.
21 Stealth is open source, live, and free to use.
Why 21 Stealth
No competitor offers this.
22 reasons why 21 Stealth is in a class of its own — private, portable, and built for real crypto holders.
Complete Documentation of All Holdings
All coins, all wallets, all chains — tracked centrally and structured. No coin ever gets forgotten.
All Crypto Holdings at a Glance
Total value in real-time, broken down by asset, chain and wallet — without switching between apps.
Automatic Balance Fetch via Public Address or xPub
Enter a wallet address or xPub key once — balances fetched directly from the blockchain, all derived HD addresses included. No manual updates.
Multi-Chain in a Single App
BTC, ETH, SOL and more chains simultaneously — no separate tool per blockchain needed.
Historical Performance & P&L Overview
How has the portfolio developed? Track when you bought what and see value growth — without a cloud service.
Easy Access to All Stored Addresses
Cold wallets are physically hard to reach — but the public address is always available. No digging for the hardware wallet.
Monitor Cold Wallets Without Physical Access
Check your cold wallet balance anytime — even if it's locked in a safe or held by a trusted person.
Send to Cold Wallets Without Physical Access
Receive address saved — just copy and transfer directly from an exchange to your cold wallet.
Estate Planning & Digital Inheritance
The encrypted file can be deposited with a notary or in a safe. Heirs find all wallets neatly structured — without any credentials being exposed.
Emergency Access for Trusted Persons
The AES-encrypted file can be given to a trusted person. Only accessible with a password — securely shared, but never open.
Zero-Knowledge — No Server Ever Sees Your Data
Everything runs in the browser. No API, no backend, no logs. It is technically impossible for us to see anything.
AES-Encrypted, Password-Protected File Export
Export your portfolio as an encrypted file and import it on any device — private cloud, USB stick or secure backup.
No Account, No KYC, No Email
No registration, no identity verification. Just open and start — completely anonymous.
Open Source — Anyone Can Audit the Code
Full transparency. The community confirms: nothing is stored or sent. Trust through code, not promises.
No Tracking, No Ads, No Analytics
No Google Analytics, no Hotjar, no third-party scripts. What happens in the browser stays in the browser.
No Installation Required — Installable as PWA
Open the URL and you're done — no setup, no app store, no server. Want a native feel? Install 21 Stealth as a PWA directly from your browser on any device. Rotki, Wealthfolio & others all require a full desktop installation.
Cross-Device via Encrypted File
Store your file on iCloud, Nextcloud, USB or Google Drive — importable on any device. No cloud subscription, no sync service needed.
Mobile App in Addition to the Web App
iOS & Android — same file, same password. Your portfolio always with you, even on the go.
Platform-Independent: Windows, Mac, Linux, Android, iOS
Crypto Pro is Apple-only. Rotki is desktop-only. 21 Stealth runs everywhere — only a browser needed.
QR Code Display for Wallet Addresses
Display saved receive addresses as a QR code — handy for quick transfers without copy-paste errors.
Tax Export Without Cloud Access
Export your transaction list as a CSV for your tax advisor — generated locally, nothing leaves the browser.
Purchase Prices & Dates Documentable
Track when which coin was bought at what price — the basis for P&L calculation and holding periods (e.g. the 1-year rule in AT/DE).
FAQ
Frequently Asked Questions
Do I need to create an account to use 21 Stealth?
No. 21 Stealth requires no account, no email address, and no personal information of any kind. Enter your wallet address and start tracking immediately.
Does 21 Stealth store my data?
No. We do not store any user data on our servers – not your wallet addresses, not your portfolio history, not your device information. Your data lives exclusively on your own device.
Can I track cold wallets?
21 Stealth only requires a public wallet address – no private keys, no seed phrases. Safe to use with Ledger, Trezor, or any paper wallet.
Is 21 Stealth free?
Yes, 21 Stealth is completely free to use.
Is 21 Stealth open source?
Yes. The full source code is publicly available on GitHub. You can inspect it, self-host your own instance, or contribute.
Which cryptocurrencies does 21 Stealth support?
Bitcoin (BTC), Ethereum (ETH), Solana (SOL), Litecoin (LTC), Dogecoin (DOGE), TRON (TRX), Tether (USDT), and USD Coin (USDC).
What blockchains are supported?
Bitcoin, Ethereum, Solana, Litecoin, Dogecoin, TRON, and ERC-20/TRC-20 tokens (USDT, USDC).
What is an xpub key and why would I use it?
An xpub (extended public key) is a master public key from an HD wallet (e.g. Ledger, Trezor). Instead of adding individual Bitcoin addresses one by one, you can paste your xpub once — 21 Stealth will automatically track all addresses derived from it. xpub keys are fully supported by 21 Stealth.
Can I track my exchange balances (Binance, Coinbase, Kraken…)?
No — and this is intentional. Connecting to exchanges requires API keys with read access to your account, which means 21 Stealth would need to handle sensitive credentials and make requests on your behalf. That would break our core promise: zero server-side data. For exchange holdings, we recommend manually adding the wallet addresses you use to withdraw to cold storage. Manual entry for exchange balances is on our roadmap.
What is the encrypted export feature?
21 Stealth allows you to export your entire portfolio configuration as an AES-encrypted, password-protected file. This means your data is portable and secure: import it on another device or keep it as a backup – only you can open it with your password.
Can I store my export file in the cloud?
Yes — and we recommend it. Save your encrypted .json file to Google Drive, iCloud, Dropbox, or any cloud storage you use. Because the file is AES-256 encrypted, it is completely safe to store online: without your password, it is unreadable to anyone. This way your portfolio is available on all your devices at any time.