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Early Signal

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Early Signal你知道那種醒來就不對勁的早晨跡象其實已經在了

來自手錶上已有夜間資料的私人提醒——只與你比較。

只寄上線信件,可隨時退訂。見我們的 隱私權政策.

運作方式

上線時寄信。預警始終免費。

9:41

今日

略有變化

相對平常模式有小幅變化

  • 跳過高強度訓練

    在訊號回穩前保持輕鬆活動

  • 比平時多補充水分

    水或電解質飲料——少量多次

  • 早點睡

    今晚盡量更早入睡

腕溫

領先

呼吸頻率

領先

HRV

輔助

靜息心率

輔助

睡眠

背景

  • iPhone,iOS 17+
  • 可記錄夜間 HRV 的 Apple Watch
  • 腕溫需 Series 8+
  • 夜間配戴

Medical disclaimer

GetEarlySignal is a wellness tracking and rest-day support tool. It does not provide medical diagnoses, treatment plans, clinical assessments, or healthcare advice. The app does not replace professional medical care or emergency healthcare services.

What is Early Signal?

Early Signal is a consumer wellness tool for iPhone and Apple Watch. It measures personal variations in overnight biometric baselines—wrist temperature, breathing rate, heart rate variability (HRV), resting heart rate (RHR), and sleep—to suggest low-risk rest actions. It does not diagnose or treat disease and is not medical advice.

適合誰

為已經有 Watch 的人

不用再買配件,沒有要盯著的儀表板,也不用帳號

你已經在戴 Watch

不用新的戒指或綁帶 — Early Signal 使用已在 Apple Health 裡的夜間資料

你不想再要一個儀表板

一次少見的提醒,不是每天早上盯著的圖表

你希望它保持私密

預設在 iPhone 上,無需帳號

五個訊號

溫度與呼吸領先

先看壓力區分訊號,心臟指標作支持,睡眠作背景。若手錶從未記錄腕溫,環形會省略 Temp。缺失資料絕不會看起來「在範圍內」。

領先

腕溫

Series 8+ 夜間相對你的升高

領先

呼吸頻率

Series 3+ 呼吸變化

輔助

HRV

夜間變異性下降

輔助

靜息心率

個人靜息心率上升

背景

睡眠

恢復性的夜間背景

How wearable data is read

GetEarlySignal reads overnight biometric samples that Apple Watch has written to Apple Health. The inputs are sleeping wrist temperature, respiratory rate, heart rate variability (HRV), resting heart rate (RHR), and sleep (asleep time, used as context). Scoring looks for personal deviations from your own baseline, such as a drop in HRV together with a rise in overnight respiratory rate or wrist temperature. Those deviations are wellness markers used to suggest a rest day. They are not a disease detection, a clinical assessment, or a prediction that you will feel unwell. Blood oxygen (SpO2) is not an input.

運作方式

三步,無需新硬體

為配戴 Apple Watch 的成年人而建——無需再買一枚戒指,也無需弄懂 HRV 是什麼,就能獲得早期提醒。

  1. 01

    學習你的常態

    你授權後,我們會讀取已在 Apple Health 中的夜間資料。有效天數足夠後,我們只與你本人比較——從不與人群平均比較。

  2. 02

    留意承壓跡象

    Early Signal 會看腕溫、呼吸、HRV、靜息心率和睡眠是否一致。溫度和呼吸優先。若手錶從未記錄腕溫,環形會省略 Temp。缺失資料絕不會看起來「在範圍內」。

  3. 03

    最多每 3 天一次

    明顯偏離平常 提醒刻意很少。你會得到清楚說明、低風險休息建議和可選打卡。可隨時在設定中暫停。

From a status to a rest action

When GetEarlySignal shows Slightly off or Off from usual, Today turns that status into a short list of recovery steps: skip hard training, drink more fluids than usual, and get to bed earlier. You can log context such as a hard workout, travel, alcohol, or a short night you chose. The result stays a wellness suggestion on your iPhone.

更多詳情見運作方式與科學依據頁面 運作方式 · 科學依據

App 裡

一個可以行動的晨間狀態

今日、趨勢和一個小組件 — 不是又一個生物指標儀表板

9:41

趨勢

  • 腕溫

  • 呼吸

  • HRV

領先訊號在前,只與你比較

趨勢
9:41

今日

明顯偏離平常

多項信號同時出現變化

  • 跳過高強度訓練

    給身體一個恢復日。

  • 比平時多補充水分

    水或電解質飲料——少量多次

明顯偏離平常
9:41

主畫面

Early Signal

略有變化

一眼看到狀態

主畫面
為什麼是這個

不是又一個看數字的地方

夜間資料已經在 Apple。Early Signal 把它變成一個狀態 — 是補充,不是替代。

活動環

合上當天的活動環

Early Signal 對照你自己,觀察夜間負荷

Apple Health

昨晚的數字和圖表

一個晨間狀態,以及一次可以行動的少見提醒

查看運作方式

另一枚戒指或綁帶

新硬體和會員

Early Signal 使用你已經在戴的 Watch

隱私

天生注重隱私

生物指標屬於個人。App 設計為無需雲端帳號也能運作。

預設裝置端

原始健康資料留在 iPhone 上 — 無需帳號

唯讀 Apple Health

我們讀取腕溫、呼吸頻率、HRV、靜息心率、睡眠與體能訓練。我們不寫入 Apple Health,也不分享樣本。

無廣告,不販售資料

我們不出售健康資料、不用於廣告,也不用其訓練通用模型。

On-device computing. Biometric logs are stored on your iPhone with iOS data protection. We maintain strict data silos. Your personal health metrics, biometric logs, and tracking data stay on your device and are not used to train external AI or language models.

你將獲得

清晰的晨間狀態、少見提醒和小工具。預警保持免費 — Pro 增加深度,且絕不會在 明顯偏離平常 的早晨跳出

  • 晨間狀態:正常、略有變化 或 明顯偏離平常
  • 腕溫和呼吸作為領先訊號 — 若手錶從未記錄則省略 Temp
  • 訊號同步變化時的通俗說明
  • 趨勢圖優先顯示腕溫和呼吸,然後是 HRV、靜息心率和睡眠
  • 主畫面與鎖定畫面小工具,一眼查看狀態
  • 可選簽到、提醒暫停,以及設定中刪除全部資料

需要能記錄夜間 HRV 的 Apple Watch。腕溫需 Series 8 或更新;呼吸頻率從 Series 3 起。可離線使用。預警免費——Pro 可選。

常見問題

常見問題

提醒、學習模式、小工具,以及狀態意味著什麼——和不意味著什麼。

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.

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.

查看全部常見問題

別等到已經感覺到了

留下電子郵件。上架 App Store 時我們通知你——少而準的提醒,不是又一塊儀表板

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。 隱私條款科學依據.

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