Last updated: September 5, 2026 · Covers versions 1.0, 1.1 and the version 1.2 update described below. Report sharing starts in 1.1; JSON backup/import and CSV export are 1.2 features. The App Store page shows the version currently available in your region.
The developer does not collect your audio or measurement records. ShutterMeter has no account system, analytics or advertising. Audio analysis runs on your iPhone. The app does not automatically upload measurement data. You can choose to share a text report or, in version 1.2, export an archive file.
When you start a measurement, the app requests microphone permission and records a few seconds of audio. It processes that audio in memory to identify shutter sound events. The app does not save the recording as an audio file or include it in shared reports. You can change microphone permission in iPhone Settings.
Camera measurement is disabled in versions 1.0, 1.1 and 1.2. This mode does not capture camera frames in these releases.
Camera names, notes and saved measurement results are stored in the app's private Application Support directory. The app does not send these local records to the developer. Your device backup may include this file, depending on your Apple backup settings. You can delete individual measurements in the app. From version 1.1, deleting a camera moves its measurement records to Unfiled so that the results remain available; it does not erase those records. Deleting the app removes its local data, including any exported files saved inside its own Documents folder. Existing device backups follow your Apple backup settings. Independent copies saved outside this app's folder, such as in iCloud Drive, and copies already shared are not deleted with the app. Manage those copies separately in their destinations.
From version 1.1, Share health report opens the system share sheet. The text report contains the camera name, report date, tested-speed coverage and summarized measurement deviations. It does not contain the audio recording. The app sends the report to the destination you select, such as another app or a person. That destination's privacy practices apply to the copy you share. You can cancel the share sheet without sending a report.
Export full backup creates a JSON file containing camera profiles and saved measurements. This includes identifiers, camera names and notes, creation and measurement dates, nominal and estimated shutter durations, signal grades and any saved confidence-interval value. The file also records its format version and export date. It does not include audio recordings, purchase receipts or free-measurement counts.
Export CSV records creates a table of measurements with their identifiers, camera names and notes, measurement timestamps in UTC, timing values in seconds, deviation, signal grades and any saved confidence-interval value. A CSV export does not restore an archive; JSON backups are the supported import format.
In version 1.2, tapping an export creates a Documents/Exports folder. The native Files dialog lets you save locally to On My iPhone → this app's folder → Exports, or choose iCloud Drive or another file provider. The app folder may be named ShutterMeter or 快门测速仪, depending on language. File sharing makes the app's Documents folder accessible in Files; the private store at Application Support/ShutterMeter/store.json, purchase receipts and free-measurement counts are not exposed there. Saving to a cloud location can transfer the exported file off your phone under that provider's settings and privacy policy.
Import backup opens the native file picker and reads the file you select to prepare a preview. Confirm merge adds new items to the local archive; matching identifiers retain their local values. Canceling the preview does not import the file. The app does not automatically synchronize archives.
JSON backup files and CSV exports are limited to 10 MB each. An import is also limited to a merged archive of 1,000 cameras, 50,000 measurements and 10 MB, with 1 KB reserved within that limit for the backup format header. Invalid or oversized imports do not replace the existing archive. Importing a backup does not grant purchase rights or change your free-measurement count.
Saved records can therefore leave the device through an export you choose, a report share or a system device backup. Storage in the app's local sandbox does not prevent those transfers. Files saved under On My iPhone → this app's folder remain in the app's sandbox and are deleted when you delete ShutterMeter. Keep important backups in iCloud Drive or another location outside this app folder. Those independent external copies remain until you delete them in their destination, subject to that provider's settings.
Apple processes the one-time unlock through the App Store. ShutterMeter uses StoreKit to retrieve product details and verify purchase entitlements. Buying and restoring purchases require an App Store connection. The app does not receive your card or payment account details. Apple's privacy policy governs the data Apple handles for these transactions.
If a release changes how the app handles data, this policy and any affected App Store privacy information will be updated. If you email support, the developer receives the email address, message and attachments you choose to send and uses them to respond to your request. Contact: szpwqq@gmail.com.
更新日期：2026 年 9 月 5 日。适用于 iPhone 版 1.0、1.1 及下述 1.2 更新。报告分享从 1.1 开始提供，JSON 备份与导入、CSV 导出为 1.2 功能。当前可用版本以 App Store 显示为准。
开发者不收集你的录音或测量记录。App 没有账号系统、统计分析或广告，不会自动上传测量数据。
开始测量时，App 请求麦克风权限，录制数秒声音并在内存中分析。录音不保存为音频文件，也不包含在分享报告中。你可以在 iPhone 系统设置中关闭麦克风权限。1.0、1.1 和 1.2 的摄像头测量模式均未开放，不会通过此模式采集画面。
相机名称、备注和测量结果保存在 App 私有的 Application Support 目录中，App 不会将这些本地记录发送给开发者。系统设备备份可能包含这些记录，取决于你的 Apple 备份设置。你可以在 App 中删除单条测量。从 1.1 开始，删除相机会将其记录移入“未归档”，不会同时删除测量。卸载 App 会删除它在该设备上的本地数据，包括保存在自身 Documents 文件夹中的导出文件。已有系统备份仍按你的 Apple 备份设置管理。另存在本 App 文件夹以外（例如 iCloud 云盘）的独立副本，以及已分享的副本，不随本 App 卸载删除；这些副本需在各自目的地单独管理。
从 1.1 开始，点击“分享健康报告”会打开系统分享菜单。文字报告包含相机名称、生成日期、已测档位覆盖率和偏差统计，不含录音。只有你选择分享目的地后，报告才会交给对应应用或收件人；分享副本适用目的地的隐私规则。取消分享不会发送报告。
“导出完整备份”会生成 JSON 文件，包含全部相机资料和已保存的测量，包括内部标识符、相机名称与备注、创建及测量日期、标称与估算时长、信号等级，以及记录中已有的置信区间值。文件还包含格式版本和导出日期；不包含录音、购买凭证或免费测量次数。
“导出 CSV 记录”提供测量表格，包含标识符、相机名称与备注、UTC 测量时间、以秒表示的时长、偏差、信号等级及已有的置信区间值。CSV 用于表格查看，恢复档案请使用 JSON 备份。
1.2 中点击导出时，App 会创建 Documents/Exports 文件夹。系统“文件”对话框允许保存到“我的 iPhone → 本 App 文件夹 → Exports”，也可选择 iCloud 云盘或其他文件服务。文件夹名称可能显示为“快门测速仪”或“ShutterMeter”。文件共享让系统“文件”可以访问本 App 的 Documents 文件夹，但不会暴露 Application Support/ShutterMeter/store.json 私有档案、购买凭证或免费测量次数。保存到云端位置时，导出文件可能依据所选服务的设置和隐私政策离开手机。
“导入备份”通过系统文件选择器读取你选中的 JSON 并生成预览；确认后只添加新项目，标识符相同的项目保留本机值。取消预览不会导入。App 不会自动在不同设备之间同步档案。
JSON 备份文件和 CSV 导出文件分别有 10 MB 限制。导入还要求合并后的档案不超过 1000 台相机、50000 条测量和 10 MB，并在该额度内预留 1 KB 用于备份格式头部。文件无效或超过限制时，不会替换现有档案。导入不会授予购买权益，也不会改变免费测量次数。
因此，本地记录可能通过你主动选择的导出、报告分享或系统设备备份离开设备；“保存在 App 本地”不等于这些传输不会发生。“我的 iPhone → 本 App 文件夹”下的文件仍属于 App 沙盒，卸载 ShutterMeter 时会被删除。重要备份请另存到 iCloud 云盘或本 App 文件夹以外的其他位置。这些外部独立副本不会随本 App 卸载删除，由你在目的地管理，并受相应服务设置影响。
一次买断、恢复购买和商品查询由 App Store 与 StoreKit 处理，需要连接 Apple 服务。App 验证购买权益，不会取得你的银行卡或支付账号资料；Apple 处理的交易数据适用 Apple 的隐私政策。
如果你发送支持邮件，开发者会收到你主动提供的邮箱地址、正文和附件，并用于答复该请求。后续版本如改变数据处理方式，本政策和受影响的 App Store 隐私信息会同步更新。联系方式：szpwqq@gmail.com。