Privacy Policy for PerpWatch: Hyperliquid Tracker
Last updated: October 27, 2026
PerpWatch ("we", "our", or "the App") is an independent, third-party read-only
analytics tool for the Hyperliquid ecosystem. This policy explains what data is
handled when you use the App. If you have any questions, contact us at
wugongxing2019@gmail.com.
1. Summary
PerpWatch is a read-only tracker. It requires no account, no sign-up, no email
address, and no KYC. It never asks for your private key, seed phrase, or
exchange credentials, and it cannot trade, withdraw, deposit, or transfer funds.
We do not operate servers that profile your personal activity: the App reads
public blockchain and market data directly from Hyperliquid's public API
endpoints and displays it on your device. To deliver optional push
notifications, a minimal backend notification service (described in Section 5)
stores only the configuration needed to send those notifications.
2. Data we do not collect
- No account information: there is no registration, login, or profile.
- No wallet secrets: the App never requests or stores private keys, seed
phrases, passwords, or API secrets. Only a public wallet address (a string
starting with "0x") is stored, which is public blockchain information.
- No contacts, photos, microphone, camera, location, calendar, or health data.
- No advertising identifiers, and no advertising SDKs are bundled.
- We do not sell, rent, or share any personal data with third parties.
3. Data stored locally on your device
The following items are saved only on your own device using local storage
(AsyncStorage) so that the App works offline and remembers your preferences.
They are never uploaded to us or to any server, and they are deleted when you
uninstall the App or clear the App's cache:
- Tracked wallet addresses you add
- Watchlist entries
- Favorite tokens
- App preferences: display language (currently English; additional languages
will be added over time), network selection (Mainnet / Testnet), cached
market and chart data
4. Data processed automatically when requesting market data
To display prices, positions, fills, order books, charts and leaderboard data,
the App sends HTTPS and WebSocket requests directly to Hyperliquid's public API
endpoints (for example api.hyperliquid.xyz for Mainnet and the corresponding
testnet endpoint). These requests necessarily contain technical information
such as your IP address, device and OS version, App version and request
timestamps. This technical information is processed by Hyperliquid and its
infrastructure providers in order to return the requested public data. We do
not receive, store, or analyze it ourselves.
Because the App queries public wallet data, the wallet addresses you view may
be visible in network logs on the public API side, exactly as they would be
when you view the same addresses on a block explorer or any other market data
site.
5. Third-party services
- Hyperliquid public API (REST + WebSocket): used to fetch real-time prices,
order books, candles, wallet balances, positions, fills and a public
leaderboard. These requests carry technical data (such as your IP address and
device/App version) that Hyperliquid and its infrastructure providers process
to return public data; we do not receive, store, or analyze it.
- Push notifications (optional): If you enable price alerts or wallet-activity
alerts, the App registers with our backend notification service and uploads
the alert configuration required to deliver them. This includes a device
install identifier, your Expo push token, language and time-zone offset,
subscription tier, and your alert rules -- which may contain the public 0x
wallet addresses you choose to track and the price thresholds you set. This is
stored on our server solely so we can monitor the relevant on-chain activity
and push a notification when a rule triggers; it is never used for
advertising, analytics, or any other purpose. Turn notifications off in the
App to delete your device record from our server.
To deliver a notification to your device, its content (for example the coin,
the triggered price, the tracked wallet address, or the detected event) is
sent through Expo's push service (expo.host), a third party that forwards it
to Google FCM / Apple APNs. Expo and the platform push service process this
data solely to deliver the notification.
- Google Play: installs, updates and basic install attribution are handled by
Google Play in accordance with Google's privacy policy.
The App does not integrate any analytics, crash-reporting, attribution or
advertising SDK.
6. Read-only by design
PerpWatch is strictly read-only. Blockchain data is public by nature, so anyone
can view wallet activity, positions and trades recorded on-chain. PerpWatch
merely aggregates this public data into a single interface. The App has no
ability to sign transactions and cannot access, hold, or move your funds.
7. Data security
All network requests use HTTPS / WSS encryption. The optional notification
server stores only the minimal configuration described in Section 5; device
secrets are stored only as salted hashes and are never transmitted in plaintext.
Because no personal data is transmitted to us beyond that minimal configuration
and all other preferences remain on your device, the privacy risk to you is
minimal. You remain solely responsible for safeguarding your own private keys
and seed phrases; never enter them into this App or any other application.
8. Children's privacy
The App is intended for users aged 18 and over and is not directed at children.
We do not knowingly collect data from anyone under 18.
9. Changes to this policy
We may update this policy as features change. The updated version will always be
available at this URL, with the revised "Last updated" date shown above.
10. Disclaimer
PerpWatch is an independent third-party tool. It is not an official Hyperliquid
product and is not endorsed by, affiliated with, or supported by Hyperliquid.
11. Contact
If you have questions about this privacy policy or about data handling in the
App, please contact us at: wugongxing2019@gmail.com