Privacy

Spyglass WiFi collects nothing. There is no server to send anything to, and no code in either app that would send it.

What is collected

Nothing. Not usage data, not crash reports, not an anonymous identifier, not a count of launches. Every answer on the App Store privacy questionnaire is no, which is why the privacy nutrition label on both listings is empty.

What the apps hold, and where

Both apps read your Wi-Fi connection and your local network in order to describe them to you. Everything they read stays inside the app's own sandbox container on your device:

Live readings

Signal, noise, speed, channel, addressing and the devices found on your network. Held in memory while the app is open.

History, on the Mac

A rolling seven days of signal, noise, speed, channel and crowding, so the app can tell you what changed. Roughly 3 MB a week, written to the app's container and never transmitted. There is an Erase button, and deleting the app deletes it.

Preferences

Window size and whether the Mac app starts at login. Stored in the app's own defaults.

What leaves your device

Ordinarily, nothing. There is exactly one exception, and it only happens if you ask for it:

The iPhone speed test

By default it times your own router, and no traffic leaves your building. If you turn on Router and internet, the app transfers test data to and from Cloudflare's speed test endpoint in order to measure your line. The server and the amount of data are named on screen next to the switch. Nothing about you is sent. It is the transfer itself being timed.

Permissions

Two are requested. Both can be refused, and refusing either leaves the app working and saying plainly what is hidden.

Location

Both apps may ask for it, and for one reason: Apple treats the set of access points around you as a way of locating you, so macOS and iOS both hide Wi-Fi network names from an app that has not been granted Location. Your location is never read, never stored and never sent. The app asks for the permission and then uses none of what it unlocks except the network name. Every other measurement works without it. The iPhone app does not ask at launch: the prompt appears only when you tap Show network name.

Local network

Required by Apple for an app to see other devices on your network. Without it the Devices list stays empty and says why.

Third parties in the apps

There are none. No analytics, no advertising, no crash reporting service, no SDKs. Neither app has an account system, so there is nothing to sign in to and nothing to leak. Apple distributes both apps and has its own relationship with you as an App Store customer, which Apple's privacy policy covers. From that, we see only Apple's aggregate download counts, never who you are.

This website

Everything above is about the apps. The website is a separate thing, and it is worth being exact about the difference, because the website does have two places where information leaves your browser.

Hosting

The site is static files served by Vercel. Like any web host, Vercel records the ordinary details of a request in order to serve it. There is no analytics script, no advertising, no cookie and no tracking pixel on any page here, and nothing is stored in your browser.

The support form

If you send the form on the support page, what you typed goes to Web3Forms, which forwards it as an email and is what makes a support address possible without publishing one for spammers to harvest. That means whatever you put in the fields: your message, and the name and address if you chose to give them. It is used to answer you and nothing else. It is not added to a mailing list, because there is no mailing list. Web3Forms has its own privacy policy covering the handover. If you would rather not involve them, everything the form would carry can be found in this policy instead, and no reply is required for you to use either app.

Children

The apps are suitable for any age and collect nothing from anyone, so there is nothing specific to say here beyond that.

Changes

If this policy ever changes, the version here changes with it and the date below moves. It would take an app update to make a change that mattered, and app updates are visible.

Contact

Questions about any of this go through the support page.

Last updated 5 September 2026.