「刚好 · JustSize」是一款完全在设备本地运行的图片/视频压缩工具。你选择处理的照片、视频及其中的任何内容，不会被上传、存储或以任何形式传输到我们或任何第三方的服务器。压缩、格式转换、元数据编辑、目标大小预估等全部功能均在本机计算完成，App 运行时不需要联网。
我们不建立账号系统，不要求注册或登录，因此不会收集你的姓名、邮箱、设备标识符等个人身份信息用于识别用户。
| 权限 | 用途 |
|---|---|
| 照片与视频（读取） | 仅在你主动点击「选择照片或视频」时用于读取你选中的文件，以便在本地进行压缩处理。不会读取相册中其他未被选中的内容。 |
| 照片与视频（保存） | 用于将处理完成后的文件保存回你的相册（如果你选择「保存到相册」而非「保存副本」到文件）。 |
| 文件访问 | 通过系统自带的「文件」选择器导入/导出文件，App 本身不会获得对整个文件系统的访问权限。 |
你可以随时在「系统设置 → 隐私与安全性 → 照片」中调整或撤销授权。撤销权限不会影响你此前已经处理并保存好的文件。
「刚好」不集成任何第三方数据分析、广告或用户行为跟踪 SDK，不进行跨 App/网站的用户跟踪，App 内没有广告。根据我们随 App 一同提交的 Apple 隐私清单（Privacy Manifest）声明：
「刚好」采用一次性买断制解锁全部功能（无订阅），购买流程完全通过 Apple App Store / StoreKit 处理。我们不会接触、收集或存储你的支付卡号、账单地址等支付信息——这些信息始终由 Apple 保管，遵循 Apple 自己的隐私政策。恢复购买同样通过 Apple 提供的官方接口完成。
「刚好」不面向 13 周岁以下儿童设计，也不会有意收集任何用户（包括儿童）的个人数据——因为我们从一开始就不收集任何用户的个人数据。
由于「刚好」不会将你的任何数据上传或存储在服务器上，也就不存在需要我们代为保留或删除的用户数据。你处理文件产生的预设、偏好设置、处理历史记录等都只保存在你自己的设备本地；卸载 App 会清除这些本机数据。
无论你身处何地，包括受 GDPR（欧盟）、CCPA（加州）、PIPL（中国）等法规保护的地区，本政策的核心承诺始终一致：我们没有可供访问、更正、导出或删除的服务器端用户数据，因为我们从未收集过。如果你仍有任何疑问，欢迎通过下方联系方式与我们联系。
如果本政策发生实质性变更，我们会更新本页顶部的「最后更新」日期，并在 App 内相应位置同步展示最新内容。建议你在使用重大版本更新前查看本页面。
如对本隐私政策有任何疑问或建议，欢迎通过邮箱联系我们：beyondbyterminal@gmail.com，也可以在 App 内「设置 → 反馈与支持」中直接反馈，我们通常会在一个工作日内回复。
JustSize is a photo/video compression tool that runs entirely on your device. Any photo, video, or content within them that you choose to process is never uploaded, stored, or transmitted in any form to us or to any third party. Compression, format conversion, metadata editing, and size estimation are all computed locally — the app does not need an internet connection to function.
We do not have an account system and do not require sign-up or login, so we never collect your name, email address, device identifiers, or other personally identifying information to track you as a user.
| Permission | Purpose |
|---|---|
| Photos & Videos (Read) | Used only when you actively tap "Select Photo or Video," to read the specific file you chose for local processing. We never read anything else in your photo library. |
| Photos & Videos (Add) | Used to save the processed output back to your photo library, if you choose "Save to Photos" instead of exporting a copy as a file. |
| File Access | Files are imported/exported through the system's built-in Files picker; the app itself is never granted access to your entire file system. |
You can adjust or revoke these permissions anytime in Settings → Privacy & Security → Photos. Revoking access does not affect files you've already processed and saved.
JustSize does not integrate any third-party analytics, advertising, or tracking SDKs, does not track you across other apps or websites, and shows no ads. As declared in the Apple Privacy Manifest bundled with the app:
JustSize uses a one-time purchase to unlock all features (no subscription), processed entirely through the Apple App Store / StoreKit. We never see, collect, or store your card number, billing address, or other payment details — that information is held exclusively by Apple, under Apple's own privacy policy. Purchase restoration is also handled entirely through Apple's official APIs.
JustSize is not directed at children under 13, and we do not knowingly collect personal data from any user, including children — because we do not collect personal data from any user in the first place.
Since JustSize never uploads or stores any of your data on a server, there is no server-side user data for us to retain or delete. Presets, preferences, and processing history generated as you use the app are stored only locally on your own device; uninstalling the app clears this local data.
Regardless of where you are — including regions covered by GDPR (EU), CCPA (California), or PIPL (China) — the core commitment of this policy stays the same: there is no server-side user data to access, correct, export, or delete, because none was ever collected. If you still have questions, please reach out using the contact details below.
If we make material changes to this policy, we'll update the "Last updated" date at the top of this page and reflect the latest content in the corresponding section within the app. We recommend reviewing this page before using major app updates.
If you have any questions or suggestions about this privacy policy, please reach us at beyondbyterminal@gmail.com, or use Settings → Feedback & Support inside the app. We typically reply within one business day.