Perch · Privacy Policy
We collect nothing.
Effective August 15, 2026 · SparrowTek LLC
Perch is watch-only software. It has no accounts, no sign-ups, no analytics, no advertising, and no tracking of any kind. We built it so there would be nothing to collect — this page exists to say exactly that, precisely.
What stays on your device
- The addresses you watch — STX addresses and .btc names you add are stored only in the app's local database on your device.
- Cached chain data — balances, stacking status, and payout history fetched for those addresses, kept locally so the dashboard opens instantly.
- Settings — alert preferences and your selected address.
None of it is sent to SparrowTek. We operate no servers for Perch and hold no user data. Standard iOS device backups (if you have them enabled) are governed by Apple, not us.
What leaves your device
- Public blockchain queries. To show a dashboard, Perch sends the addresses you chose to watch to public Stacks blockchain APIs (operated by Hiro Systems PBC) and fetches the public on-chain data for them. These requests carry no name, email, account, or advertising identifier — there is nothing of the sort in the app. The queries are subject to Hiro's terms and privacy practices.
- Nothing else. No analytics events, no crash-reporting SDKs, no third-party services of any kind are embedded in Perch.
Camera
If you scan a QR code to add an address, frames are processed on your device by Apple's scanner solely to read the code. No image is stored or transmitted.
Notifications
Alerts (cycle closing, unlock ahead, idle-STX nudge) are computed and scheduled entirely on your device. Perch has no push servers.
Widgets and Siri
Widgets and the "Bitcoin earned" Shortcut read a snapshot the app stores in its own App Group container on your device. That data never leaves it.
App Store and TestFlight
If you install Perch through the App Store or TestFlight and have chosen to share diagnostics with developers, Apple may provide us aggregated, de-identified crash reports and statistics under Apple's privacy policy. We receive nothing that identifies you.
What we never do
- No selling, sharing, or monetizing of data — we hold none to sell.
- No tracking across apps or websites; no advertising identifiers.
- No keys, seed phrases, or funds — Perch is watch-only and cannot ask for them.
Changes
If a future version of Perch ever changes any of the above, this page will change first, with a new effective date, before that version ships.
Contact
Questions? thomas@sparrowtek.com