YOUR RECORD
Keep the context.
History includes estimated heart rate and the recorded chest-motion curve. An individual PDF has three ten-second strips and recording details, without a point-by-point waveform appendix.
HOW TO MEASURE
Phone to your left chest.
A quiet moment to record.
Keep the back of your iPhone against your left chest above the heart, with the screen facing out. Seated handheld and resting supine positions are both supported; no posture selector is needed.
Keeping still is an important step in reducing interference.
Talking, hand movement, clothing, contact pressure and device differences affect estimates. Breathe naturally and do not press hard on your chest.
Two positions. The same contact point.
Sit comfortably and hold the phone steady.
Keep the phone back in contact with your left chest above the heart. Let your shoulders relax; keep your hands and body still.
Rest on your back and keep the phone in place.
Use the same left-chest contact point. Keep the phone secure so it does not slide, without restricting your breathing.
AI-generated placement illustrations, not clinical photographs. The illuminated curves illustrate screen orientation, not an ECG or a real measurement. These are the same guidance images used in the app.
PREPARE · RECORD · REVIEW
Follow the in-app sequence.
Read the safety information.
Review the “Before you measure” notice, acknowledge it, then follow the placement guide. Use PulseRest at rest, not while driving or exercising.
Use the five seconds to settle.
After Start Measurement, a translucent countdown appears over the measurement screen. The 5–4–3–2–1 countdown and start tone help you prepare without watching the screen. No motion is measured or recorded during these five seconds.
Stay still for the 30-second recording.
Keep the phone in contact, avoid talking and breathe normally. Follow any movement warning; substantial movement may restart the recording window. Persistent movement can end the attempt rather than restart indefinitely. Do not deliberately move or lift the phone during the final seconds.
Review the estimate and the recorded curve.
The result is an estimated heart rate, not a diagnosis. Insufficient evidence may produce no estimate. Successful recordings are saved locally. Review the curve or export an individual PDF from the result or record details.
Mechanical chest motion is not an ECG.
PulseRest does not measure breathing rate, blood pressure or blood oxygen, detect atrial fibrillation, or read or sync Apple Health. Do not use it to diagnose or treat a condition or change medication. For chest pain, difficulty breathing or fainting, seek medical help rather than waiting for the app or AI.
What happens after recording?
OPTIONAL AI
Choose when to ask.
Home shows guidance for the latest measurement only. If no matching guidance exists, Analyze this result attaches that result locally. With Pro and sharing consent, send a question yourself; entering Analysis never sends automatically.
MEASUREMENT ACCESS
Know your access.
The first 7 × 24 hours of measurement access begin at first launch. Clearing data does not renew them. Afterward, new measurements require Pro. AI always requires Pro, with up to 50 replies per device per local calendar day, resetting at 00:00 in the phone’s current time zone. Existing records, replay and individual PDFs stay available.
AI uses our ECS servers to reach DeepSeek or Poyo after your consent and an explicit send. The first request may include a processed sampled curve. After the first complete reply is saved, follow-ups omit it; an initial retry, an unsaved reply or a fallback may send the initial context again. Raw multi-axis samples and the full PDF are not sent. Read the Privacy Policy and Terms of Use.
Subscription access and the daily counter are checked on your iPhone. Apple-signed purchase evidence is sent only to ECS to obtain or renew a short-lived AI service session, never to AI providers. Routine requests reuse a valid session; first authorization and renewal need internet access.
中文测量指导
手机贴紧左胸，静下来再记录。
手机背面贴紧左胸心脏上方，屏幕朝外。保持静止，是减少干扰的重要一步。支持静坐手持和静息仰卧，无需选择姿势。自然呼吸，不要用力压胸。说话、手抖、衣物、接触压力与设备差异都会影响估计。
- 先阅读「测量前」风险提示，点击「我已知晓」，再按图放置。
- 点击「开始测量」后，测量画面上会出现半透明倒计时圆环。5、4、3、2、1 和开始提示音帮助你准备；这 5 秒内不测量、不记录。
- 开始后保持静止 30 秒。移动过多可能重启记录窗口；长时间持续移动会结束本次尝试，不会无限重启。临近结束的几秒也请保持静止，不要提前移开手机。
- 结束后查看估计心率、回顾曲线，可在结果页或记录详情导出单次 PDF。证据不足时可能无法给出估计。PDF 保留三段各 10 秒的曲线，不附逐点波形数据表。
上方两图为 App 使用的 AI 生成示意图，不是临床照片。屏幕曲线只示意朝向，不是心电图或真实读数。本版本不测呼吸频率、血压、血氧，不识别房颤，也不读取或同步 Apple 健康。不要据此诊断、治疗或调整药物；有胸痛、呼吸困难、晕厥等症状时应寻求医疗帮助，不要等待 App 或 AI。
首次打开起连续 7 × 24 小时可体验测量，清除本地数据不重置；到期后新测量需 Pro。AI 从开始就需订阅，每台设备每个当地自然日的回复上限为 50 次，按手机当前时区于 00:00 重置；已有记录、回放和单次 PDF 仍可用。首页只展示与上次测量对应的建议，进入分析只附加上下文、不自动发送。经同意并主动发送后，由公司 ECS 转发至 DeepSeek 或 Poyo；首轮可附处理后的抽样曲线；首个完整回复保存后，追问不重复附波形，首轮重试、回复未保存或容灾转发仍可能再次发送首轮上下文。不传原始多轴数据或完整 PDF。
订阅资格与每日次数在本机判断；首次取得或更新短期 AI 服务会话时，Apple 签名购买凭据仅交 ECS，不提供给 AI 供应商。日常请求复用有效会话，首次授权和更新仍需联网。