Bike Tire Pressure Privacy Policy

Last Updated: 2026-10-23

TomatoPeter Studio / Jun Pan ("we," "our," or "us") provides Bike Tire Pressure as an offline bicycle tire-pressure calculator. On the device the app is named Tire Pressure. This policy explains how the app handles the bikes, riders, and settings saved on your device.

Summary

Bike Tire Pressure calculates a starting tire pressure on your device. It does not require an account. The App Store version does not include advertising, analytics, or in-app feedback.

Bikes, riders, and settings stay in the app's local storage. We do not receive them.

Information Stored on the Device

The app may store the following information on your device so it can calculate and remember a setup:

  • Bikes: the name and setup you enter, including bike type, weight, tire and wheel measurements, casing, rim, and ride style. You can save up to 8 bikes.
  • Riders: the name and weight you enter. You can save up to 8 riders.
  • Settings: pressure unit, weight unit, language, the surface conditions you choose, and the bike and rider currently selected.
  • These records are written to a local file in the app's own storage on the device.

How the App Uses This Information

The app uses these records only on your device to:

  • Calculate a starting front and rear tire pressure from the rider and bike weight, tire and rim measurements, casing, ride style, and surface conditions you enter
  • Remember your bikes, riders, and settings between launches
  • Show the pressure unit, weight unit, and language you choose

What the Result Means

The pressure shown is a starting point for adjustment before a ride. It is not a pressure limit from the tire or rim maker. Check the limits printed for your tire and rim, and adjust for how the bike feels.

Data Sharing

We do not sell or share your bikes, riders, or settings. The App Store version does not send them to us, and it does not send them to an advertising or analytics service.

Apple distributes the app through the App Store under Apple's own policies. That distribution does not give us the bikes, riders, or settings saved on your device.

Local Files

The app does not offer an account, cloud sync, or a file export. If a saved file cannot be read, the app may keep a copy of that original file in the same local folder before it writes a new file. The copy remains on the device.

That copy is not a cloud backup, and it does not mean we can restore your bikes or riders. Deleting the app removes the local files, and we cannot recover them.

Retention and Deletion

We do not keep a copy of your bikes, riders, or settings. You can delete a bike or rider in the app. Deleting the app removes its local files from the device.

Children's Privacy

Bike Tire Pressure does not create an account and does not send rider names or weights to us. We do not knowingly collect personal information from children.

Your Rights

You control the bikes, riders, and settings stored on your device. Because we do not receive that local file, we generally cannot access, correct, or delete it for you. You may still contact us with a privacy question.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. When we make changes, we will update the date on this page.

Contact Us

If you have questions about this Privacy Policy, please contact us:

[email protected]

Developer: TomatoPeter Studio / Jun Pan

Support

骑行胎压隐私政策

最近更新：2026-10-23

TomatoPeter Studio / Jun Pan（“我们”）提供 Bike Tire Pressure，这是一款离线的自行车胎压计算应用。设备上显示的名称是 Tire Pressure，中文界面为“骑行胎压”。本政策说明该应用如何处理保存在你设备上的车子、骑手和设置。

摘要

骑行胎压在你的设备上计算出发胎压，不需要账号。App Store 版本不含广告、统计或应用内反馈。

车子、骑手和设置保存在应用的本地存储中。我们收不到这些内容。

保存在设备上的信息

为了计算并记住一组设置，应用可能在你的设备上保存以下信息：

  • 车子：你输入的名称和配置，包括车型、重量、轮胎和轮圈尺寸、胎体、轮圈和骑行风格。最多保存 8 辆车。
  • 骑手：你输入的名称和体重。最多保存 8 位骑手。
  • 设置：胎压单位、重量单位、语言、你选择的路面状况，以及当前选中的车子和骑手。
  • 这些记录写入应用在设备上的本地文件。

应用如何使用这些信息

应用只在你的设备上使用这些记录，用于：

  • 根据你输入的骑手和车辆重量、轮胎和轮圈尺寸、胎体、骑行风格及路面状况，计算前后轮的出发胎压
  • 在下次打开时记住车子、骑手和设置
  • 显示你选择的胎压单位、重量单位和语言

结果的含义

显示的胎压是骑行前调整的起点，不是轮胎或轮圈厂家规定的限压。请核对轮胎和轮圈上的限压，并按实际骑行感觉调整。

数据共享

我们不出售、不共享你的车子、骑手或设置。App Store 版本不会把它们发给我们，也不会发给广告或统计服务。

Apple 通过 App Store 分发应用，并适用 Apple 自己的政策。分发本身不会把你设备上保存的车子、骑手或设置提供给我们。

本地文件

应用不提供账号、云同步或文件导出。如果已保存的文件无法读取，应用可能会先在同一本地文件夹保留原文件的一份副本，再写入新文件。该副本仍在设备上。

这份副本不是云备份，也不表示我们能恢复你的车子或骑手。删除应用会移除这些本地文件，我们无法找回。

保留与删除

我们不保留你的车子、骑手或设置。你可以在应用里删除车子或骑手。删除应用会从设备上移除它的本地文件。

儿童隐私

骑行胎压不创建账号，也不会把骑手姓名或体重发给我们。我们不会故意收集儿童的个人信息。

你的权利

设备上的车子、骑手和设置由你管理。因为我们收不到这个本地文件，通常也无法代为访问、更正或删除。你仍可以就隐私问题联系我们。

本政策的变更

我们可能会不时更新本隐私政策。更新时，我们会更改本页上的日期。

联系我们

如果对本隐私政策有疑问，请联系我们：

[email protected]

开发者： TomatoPeter Studio / Jun Pan

支持