DC Electrical Calc
No account, no analytics, no advertising. Nothing you enter leaves the device. 没有账号、没有统计、没有广告，你输入的内容不会离开设备。
Effective September 17, 2026 · Applies to DC Electrical Calc for iPhone and iPad · Part of the AI123 privacy index 生效日期：2026 年 9 月 17 日 · 适用于 iPhone 与 iPad 上的 DC Electrical Calc · 出自 AI123 隐私索引
1. Who we are一、我们是谁
This policy is published by Shijiazhuang Dianhua Technology Co., Ltd. ("we"), registered in Shijiazhuang, Hebei, China. We are the developer of DC Electrical Calc. For any question about this policy, contact privacy@ai123.xyz. 本政策由石家庄点画科技有限公司（以下称"我们"，英文名 Shijiazhuang Dianhua Technology Co., Ltd.）发布，公司注册于中国河北省石家庄市。我们是 DC Electrical Calc 的开发者。如对本政策有任何疑问，请联系 privacy@ai123.xyz。
2. Information we do not collect二、我们不收集的信息
DC Electrical Calc does not collect, transmit or share any of the following: DC Electrical Calc 不会收集、传输或分享以下任何内容：
- Personal details — no name, email address, phone number or account is required or requested. 个人身份信息 —— 不需要也不索取姓名、邮箱、电话号码或任何账号。
- Location data位置数据
- Contacts, photos, camera, microphone or files通讯录、照片、相机、麦克风或文件
- The values you enter into the calculators你在计算器中输入的数值
- Advertising identifiers or any other device identifier used for tracking广告标识符，或任何用于追踪的设备标识符
- Usage analytics, crash reports or behavioural data使用统计、崩溃报告或行为数据
3. Information stored on your device三、存储在你设备上的信息
The app stores your recent inputs and preferences locally on your device so that you do not have to re-enter them. This data never leaves your device and is not visible to us. It is deleted when you delete the app. App 会在你的设备本地保存最近的输入和偏好设置，省去重复输入的麻烦。这些数据不会离开你的设备，我们也看不到，删除 App 时即被清除。
4. Network access四、网络访问
The app performs its calculations on your device. App 的计算全部在你的设备上完成。 It does not require a network connection to function and it does not send your inputs anywhere. 运行不需要网络连接，也不会把你的输入发送到任何地方。 It contains no advertising SDK. App 内不含广告 SDK。 It contains no third-party analytics library. App 内不含第三方统计库。
5. Purchases五、购买
If you buy the full version, the transaction is processed by Apple. We never receive your payment details, and we do not receive your name, email address or billing address. Apple's own privacy policy governs the information Apple processes. 如果你购买完整版，交易由 Apple 处理。我们不会收到你的支付信息，也不会收到你的姓名、邮箱或账单地址。Apple 处理的信息适用 Apple 自己的隐私政策。
6. Diagnostics六、诊断信息
If you have enabled "Share With App Developers" in your iOS settings, Apple may provide us with aggregate, anonymised crash reports. These contain no personal information and cannot be linked to you. You can turn this off at any time in Settings → Privacy & Security → Analytics & Improvements. 如果你在 iOS 设置中开启了"与 App 开发者共享"，Apple 可能会向我们提供汇总的匿名崩溃报告。其中不含个人信息，也无法关联到你。你可以随时在"设置 → 隐私与安全性 → 分析与改进"中关闭。
7. Children七、儿童
The app is a professional tool intended for adults. It is not directed at children and we do not knowingly collect information from children. 本 App 是面向成年人的专业工具，不面向儿童，我们也不会在知情情况下收集儿童的信息。
8. Your rights八、你的权利
Because we do not collect personal data, there is nothing for us to disclose, correct or delete on your behalf. Data stored on your device is removed when you delete the app. If you believe we hold information about you, write to privacy@ai123.xyz and we will respond. 由于我们不收集个人数据，因此没有可供我们披露、更正或删除的内容。设备上的数据在你删除 App 时即被清除。如果你认为我们持有你的信息，请发送邮件至 privacy@ai123.xyz，我们会答复。
9. Changes to this policy九、政策变更
If we change this policy, we will update the effective date above and, where the change is significant, note it in the app's release notes. Continued use of the app after a change means you accept the updated policy. 如果本政策发生变更，我们会更新上方的生效日期；若属重大变更，还会在 App 的更新说明中注明。变更后继续使用 App 即视为接受更新后的政策。