SuKasa Privacy Policy

Effective date: 2026-05-09

SuKasa is an Apple Watch and iPhone app that controls TP-Link Kasa smart-home devices on your local Wi-Fi network. This page explains what data the app handles and what it doesn't.

In one sentence

SuKasa stores a small list of devices you add (label, IP, type) on your own device, sends commands directly to those devices over your home Wi-Fi, and shares nothing with anyone — not us, not third parties, not analytics services.

What SuKasa stores

The app keeps a small amount of data locally on your iPhone and Apple Watch only:

• Devices you add: a label you type (or one supplied by the device), the device's local IP address, the device kind (plug, dimmer, bulb, etc.), and, for power strips, each outlet's identifier and label as reported by the hardware.
• A scan-prefix preference: the last subnet prefix used by the network scan feature, if you used it.

This data is stored in standard iOS / watchOS preferences storage. It is not uploaded anywhere.

What SuKasa does over the network

• Sends control commands and queries (turn on/off, set brightness, read state) directly to your Kasa devices using their published local protocol on TCP port 9999. These messages stay on your home Wi-Fi.
• Forwards Watch app commands to the iPhone companion via Apple's WatchConnectivity framework. The iPhone then makes the local-network request on the Watch's behalf. WatchConnectivity is provided by Apple and routes traffic only between your paired devices.

The app does not contact any server we operate. There are no accounts, no sign-in, no telemetry, no analytics, and no third-party SDKs.

Permissions we ask for

• Local Network access (iOS and watchOS). Required to send commands to your Kasa devices. Used only for that purpose. The system will prompt you the first time the iPhone app makes a local-network request; you can revoke the permission at any time in Settings → Privacy & Security → Local Network.

What we don't do

• We don't collect, transmit, or sell your data.
• We don't track you across apps or websites.
• We don't use cookies, identifiers for advertising, or third-party analytics.
• We don't send your device list, IP addresses, or any usage information off your devices.

Children

SuKasa is not directed to children under 13 and does not knowingly collect information from anyone.

Changes to this policy

If this policy changes materially, an updated version will be posted at the same URL with a new effective date.

Contact

Questions about privacy in SuKasa? Open an issue on the project's GitHub repository.