帮助与反馈

SizeHalo 支持

测量已有戒指的内圈尺寸，并把毫米结果换算为常见地区圈号。

如何获得更可靠的结果？

1. 使用尺寸合适、闭口且近似正圆的戒指。
2. 把戒指平放在屏幕中央。
3. 让虚线恰好贴合戒指内缘，而不是外缘。
4. 先确认内径和内周长，再参考地区圈号。

为什么需要校准？

SizeHalo 会根据已知设备参数计算屏幕物理比例。如果设备无法识别或你希望复核，可以把标准银行卡放在屏幕上，用其 53.98 mm 短边完成手动校准。App 不读取银行卡内容。

结果能保证戒指一定合适吗？

不能。SizeHalo 测量的是已有戒指的内圈，并提供网购选码参考。实际佩戴还会受到戒指宽度、手指关节、温度和个人松紧偏好的影响。贵重或不可退换商品请在购买前咨询珠宝商。

手指拍照测量在哪里？

这项功能仍在持续开发和精度验证中。当前版本不会提供未经充分验证的手指估算结果。

删除测量记录

打开“最近测量”，在记录上向左轻扫即可删除。卸载 SizeHalo 会删除全部本机记录和校准设置。

联系我们

请在邮件中说明 iPhone 型号、iOS 版本、SizeHalo 版本、戒指的已知内径（如有）以及问题复现步骤。

发送支持邮件

Help and feedback

SizeHalo Support

Measure the inside of an existing ring and convert the millimeter result to common regional sizes.

How do I get a more reliable result?

1. Use a closed, round ring that already fits well.
2. Lay it flat at the center of the screen.
3. Match the dashed guide to the inner edge—not the outside edge.
4. Check diameter and circumference before relying on a regional label.

Why does calibration matter?

SizeHalo calculates physical screen scale from known device specifications. If the device cannot be identified, or if you want to verify the scale, place a standard bank card on the screen and calibrate against its 53.98 mm short edge. The App does not read card information.

Does the result guarantee a perfect fit?

No. SizeHalo measures an existing ring and provides a reference for online sizing. Ring width, knuckles, temperature, and personal comfort also affect fit. Confirm valuable or non-returnable purchases with a jeweler.

Where is finger-photo measurement?

That feature remains in development and accuracy validation. The current version does not return an insufficiently validated finger-size estimate.

Delete measurement history

Open Recent Measurements and swipe left on a record to delete it. Uninstalling SizeHalo removes all local measurements and calibration settings.

Contact us

Include your iPhone model, iOS version, SizeHalo version, known ring diameter if available, and steps to reproduce the issue.

Email Support