隐私政策
生效日期：2026-06-01 · 适用应用：Etyma（iOS）
1. 我们的核心立场
Etyma 是一款英语词根、词缀与词源学习应用。我们在设计之初就坚持「隐私优先」：
- 无账号、无登录、无注册——使用 Etyma 不需要提供任何身份信息。
- 完全离线运行——App 不会主动发起任何网络连接来收集或传输您的数据。
- 无第三方 SDK——没有分析（Analytics）、没有广告、没有崩溃上报、没有追踪，也不集成 Firebase、Sentry 或任何第三方服务。
- 开发者无法访问您的数据——我们没有服务器来接收您的数据，因此即便我们想，也无从获取。
2. 我们收集哪些数据
我们不收集任何个人数据。包括但不限于：姓名、邮箱、电话、位置、设备标识符、广告标识符、通讯录、相册、使用行为等——这些我们一概不收集。
3. 您的数据存储在哪里
您在使用 Etyma 过程中产生的所有数据，全部仅保存在您的本地设备上（通过设备内置的本地数据库存储），包括：
- 学习进度与掌握记录
- 收藏的单词、词根与合集
- 您撰写的笔记
- 错题本与复习记录
这些数据从不离开您的设备，也从不上传到任何服务器。卸载 App 将会删除这些本地数据，请您注意自行备份。
4. 内购与支付
Etyma 提供一次性「永久解锁」内购（商品标识：com.bytelink.etyma.lifetime）。该交易完全由 Apple 通过 App Store 与 StoreKit 处理。
- 我们不接触、不收集、也不存储您的任何支付信息（如银行卡号、Apple ID 等）。
- 购买凭证的校验在您的设备本地完成，或由 Apple 处理。
- 退款请求依据 Apple 的退款政策处理（通常为 7 天内可申请）。
5. 本地通知
若您开启每日学习提醒，相关通知由您的设备本地调度与发送，不经过任何服务器。您可随时在系统「设置」中关闭通知权限。
6. 发音功能
单词发音使用您设备内置的本地语音合成（AVSpeechSynthesizer）实现，不会将任何文本或语音上传到网络。
7. 儿童隐私
Etyma 不会面向任何年龄段的用户收集个人信息，自然也不会定向收集 13 岁以下儿童的信息，符合 COPPA 的精神。由于我们本就不收集任何数据，因此不存在儿童数据被收集的情形。
8. 关于未来的 iCloud 同步（前瞻性说明）
当前版本不含云同步功能。未来若我们加入 iCloud 同步，您的数据将仅存储在您自己的 iCloud 账户中，由 Apple 进行加密与管理。在这种情形下，开发者仍然无法访问您的数据。届时本政策将相应更新，并以此页发布。
9. 政策变更
我们可能会不时更新本隐私政策。任何变更都将发布在本页面，并更新顶部的「生效日期」。重大变更我们会尽可能在 App 内提示。
10. 联系我们
如对本隐私政策有任何疑问，请联系：
- 开发者：ByteLink
- 邮箱：[email protected]
Privacy Policy
Effective Date: 2026-06-01 · Applies to: Etyma (iOS)
1. Our Core Position
Etyma is an app for learning English roots, affixes, and etymology. It was built privacy-first from day one:
- No account, no login, no registration — using Etyma requires no identity information.
- Fully offline — the app does not initiate any network connection to collect or transmit your data.
- No third-party SDKs — no analytics, no ads, no crash reporting, no tracking, and no Firebase, Sentry, or any other third-party service.
- The developer cannot access your data — there is no server to receive it, so even if we wanted to, we could not.
2. What Data We Collect
We collect no personal data whatsoever. This includes, without limitation: name, email, phone number, location, device identifiers, advertising identifiers, contacts, photos, and usage behavior — none of it is collected.
3. Where Your Data Is Stored
All data generated while using Etyma is stored solely on your local device (in the device's built-in local database), including:
- Learning progress and mastery records
- Saved words, roots, and collections
- Notes you write
- Your mistake book and review records
This data never leaves your device and is never uploaded to any server. Uninstalling the app deletes this local data, so please back it up yourself if needed.
4. In-App Purchases & Payments
Etyma offers a one-time "Lifetime Unlock" in-app purchase (product identifier: com.bytelink.etyma.lifetime). This transaction is handled entirely by Apple through the App Store and StoreKit.
- We do not touch, collect, or store any of your payment information (such as card numbers or Apple ID).
- Purchase receipts are validated on your device or by Apple.
- Refund requests are governed by Apple's refund policy (typically available within 7 days).
5. Local Notifications
If you enable daily study reminders, those notifications are scheduled and delivered locally by your device and never pass through any server. You can disable notification permission at any time in system Settings.
6. Pronunciation
Word pronunciation uses your device's built-in on-device speech synthesis (AVSpeechSynthesizer). No text or audio is uploaded to the network.
7. Children's Privacy
Etyma does not collect personal information from users of any age, and therefore does not knowingly collect information from children under 13, consistent with the spirit of COPPA. Because we collect no data at all, no children's data is ever collected.
8. Future iCloud Sync (Forward-Looking Note)
The current version contains no cloud sync feature. If we add iCloud sync in the future, your data will be stored only in your own iCloud account, encrypted and managed by Apple. Even then, the developer will still have no access to your data. This policy will be updated accordingly and published on this page.
9. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Effective Date" above. For material changes we will try to notify you within the app.
10. Contact Us
If you have any questions about this Privacy Policy, please contact:
- Developer: ByteLink
- Email: [email protected]