# 常見問題

Canonical: https://getearlysignal.app/zh-Hant/faq

> Early Signal 說明與常見問題：基準線、提醒、健康存取、小工具與資料刪除。

## 使用應用

### 什麼時候能下載 App？

Early Signal 即將登陸 iPhone。在本站加入等候名單，上架 App Store 時我們會寄信。商店連結上線後才會出現——我們不會放佔位下載按鈕。

### 為什麼 App 顯示「學習中」？

我們需要足夠有效的 HRV 和靜息心率夜晚，才能把你和自己比較。首次開啟時也會讀取已在 Apple 健康中的夜晚，許多人立刻就能建立基線。在此之前不會傳送 明顯偏離平常 提醒。

### 為什麼顯示「今日無判定」？

若夜間 HRV 或靜息心率未同步，我們不會編造有把握的狀態。App 會指出缺什麼以及如何修復——通常是夜間手錶配戴與 Apple Health 權限。

### 我需要什麼？

iOS 17+ 的 iPhone，以及能記錄夜間 HRV 的 Apple Watch。腕溫需要 Series 8 或更新 — 沒有則環形省略 Temp，並有註腳說明原因。呼吸頻率從 Series 3 起可用。請授予健康存取：腕溫、呼吸頻率、HRV、靜息心率、睡眠和體能訓練。

### Is Early Signal a medical device?

No. Early Signal is a wellness tool. It does not diagnose or treat disease, and it is not medical advice. Status levels describe personal deviations in overnight biometric baselines and suggest low-risk rest actions.

## 提醒與狀態

### 為什麼我沒有收到提醒？

提醒偏保守。明顯偏離平常 需要訊號間加權一致——或相對你本人基線的持續夜間溫度升高。最多每 3 天一次 明顯偏離平常 提醒。高強度訓練、旅行、飲酒或有意睡眠不足，可能把一般的 略有變化 或 明顯偏離平常 顯示為 可由情境解釋（App 內狀態，無推播）。溫度主導的結果不會被攔住。略有變化 推播屬於 Pro。可在設定中暫停提醒。

### 這是否意味著我會感覺不適？

不會。App 從不這樣聲稱。App 內狀態是 正常、略有變化 或 明顯偏離平常——或訓練／已記錄情境後的 可由情境解釋。壓力、訓練、睡眠、旅行、飲酒或身體不適都可能改變指標。狀態只表示你的模式對你來說看起來不尋常。

### What does an “Off from usual” alert mean?

Off from usual means several overnight signals moved together versus your own baseline, or wrist temperature rose and stayed up versus you. The app suggests low-risk rest actions, such as skipping hard training. It does not diagnose or treat disease and is not medical advice. Pushes are capped at one every 3 days.

### What does “Explained by context” mean?

After a hard workout, travel, alcohol, or a short night you chose, a generic Slightly off or Off from usual pattern can show as Explained by context. You still see the status in the app. There is no push. Temperature-led results are not held back by that context.

## 健康與資料

### 如何中斷 Apple Health？

開啟健康 App → 分享 → App → Early Signal，並關閉存取。若新樣本停止到達，App 會顯示指引。

### 如何刪除我的資料？

在 App 中：設定 → 刪除全部 App 資料。這會移除本機指標、評估、簽到、分析與已排程的通知。

### 如果我拒絕 Apple 健康取用怎麼辦？

仍可繼續。應用會停在健康步驟並給出說明：打開健康 → 共享 → App → Early Signal，並允許讀取類型。沒有權限前，今日無法建立個人基線。

## Wearables and privacy

### Can an Apple Watch detect early signals of sickness?

An Apple Watch can record overnight changes in wrist temperature, respiratory rate, heart rate variability (HRV), resting heart rate (RHR), and sleep. GetEarlySignal reads those samples from Apple Health and compares them with your own baseline. Slightly off or Off from usual means the pattern looks unusual for you. It is not a sickness detector, a diagnosis, or a prediction that you will feel unwell. If you feel sick or have severe symptoms, contact a clinician or emergency services.

### How does GetEarlySignal map my heart rate variability (HRV)?

GetEarlySignal reads overnight HRV from Apple Health, typically stored as SDNN. It builds a personal baseline with a median and a median absolute deviation from your own nights. HRV is a supporting signal. Wrist temperature and respiratory rate lead when the Watch has recorded them. An HRV drop alone does not set Off from usual, and it is not a diagnosis.

### Is my wearable health data secure in the GetEarlySignal app?

Health data stays on your iPhone. Scoring and storage are on-device, protected with iOS data protection. Apple Health access is read-only. There is no cloud account and no upload of biometric logs. Personal health metrics are not sold, not used for ads, and not used to train external AI or language models. You can delete all app data in Settings.

## Pro 與其他

### 有訂閱嗎？

晨間預警始終免費。Early Signal Pro 可選，增加個人準確率報告、提醒靈敏度、更深趨勢與歷史、略有變化 推播、中號小組件和 CSV 匯出。方案：$3.99／月、$24.99／年或 $49.99 終身。Pro 不會在 明顯偏離平常 早晨自動出現 — 僅在平靜的 正常 日或設定中。

### 可以離線使用嗎？

可以。評分與儲存在裝置端完成。使用 App 不需要網際網路。

### 有小工具嗎？

可以。從主畫面圖庫新增今日小組件，以及鎖屏圓形和矩形。它們顯示最新狀態（正常、略有變化、明顯偏離平常 或 今日無判定），點按開啟 App。帶建議的中號小組件是 Pro。小組件不讀取 HealthKit——使用每次評估後的快照。

### What does Early Signal Pro unlock?

The morning status, Off from usual alerts, 14-day trends, 30-day history, and small widgets stay free. Pro unlocks a personal accuracy report, custom alert sensitivity, Slightly off pushes, deeper history, a medium widget, and CSV export. Plans are $3.99 per month, $24.99 per year, or $49.99 lifetime.

## 隱私 · 條款 · 科學依據

Early Signal 是一款健康管理 App，不是醫療器材。它不診斷、預測、預防或治療疾病，也從不點名具體病症。如有令人擔憂或嚴重的症狀，請就醫。

- [隱私](https://getearlysignal.app/zh-Hant/privacy)
- [條款](https://getearlysignal.app/zh-Hant/terms)
- [科學依據](https://getearlysignal.app/zh-Hant/science)