Privacy Policy

Effective November 10, 2026

This policy covers the Spring Agent app for iPhone and iPad (“the app”), made by kezhenxu94 (“we”, “us”).

Your agent server

The app is a client for a Spring Agent server that you run yourself, or that your organization runs for you. When you sign in, you choose that server. From then on, the app sends it your messages, the files you attach, your settings, and the results of any tools on this phone that you allow your agent to use.

We do not operate your server and receive none of this. What the server does with your data — including which AI model providers it sends your conversations to — is decided by whoever operates it, and is governed by their policies.

You sign in through your server's own sign-in page. The app keeps the resulting access token in the iOS Keychain on your device.

Data on this phone

When a task needs this phone, your agent asks the app to use a tool, such as finding your location, reading or adding a calendar event or reminder, setting an alarm, reading or logging Health data, looking up a contact, finding a recent photo, or drafting a mail or message. The app:

• uses each kind of data only after iOS has asked for, and you have granted, permission for it;
• follows the choice you make for each tool in Settings › On this iPhone — allowed, ask each time, or off;
• sends the result only to your agent server, for the task that asked for it;
• never sends it to us or to anyone else.

You can turn off all of this in Settings › On this iPhone, and withdraw any permission in iOS Settings at any time.

Health data

Data from Apple Health is read or written only when your agent asks and you allow it, and is sent only to your own agent server for that request. It is never used for advertising or marketing, never sold, never shared with third parties by us, and never stored by the app in iCloud.

Connectors

Connectors are configured on your agent server. Any API keys or tokens you enter for a connector are sent to your server and stored there, not by us.

Sample agent

“Try it without a server” runs a built-in sample agent. In that mode nothing leaves your phone.

Purchases

Spring Agent Pro is sold through the App Store. Apple processes payment; we receive no payment details. The app checks whether you have Pro with Apple's StoreKit on your device. We may see aggregate, anonymous sales reports from Apple.

What we don't do

• We have no servers that receive data from the app.
• The app contains no analytics, advertising or crash-reporting SDKs.
• We don't track you across apps or websites, and don't sell or share data.

Children

The app is not directed at children under 13, and we do not knowingly collect data from them — or from anyone.

Changes

If this policy changes, the new version will be posted here with a new effective date.

Contact

Write to contact@kezhenxu94.me or open an issue on GitHub.