iPhone 搭配 Apple Watch。心率由手錶量測，手機負責設定與訓練紀錄。沒有 Apple Watch 就無法使用——心率是這個 App 的核心。
兩台裝置上都要安裝 KINETIC，並且更新到同一個版本。
多半是心率權限沒開。到 iPhone 的「健康」App › 分享 › App 與服務 › KINETIC，把心率相關項目逐一開啟。
手錶端如果被拒絕過，App 會直接顯示提示並指路。權限開好後重新開始一場訓練即可。
不是。那表示超過六秒沒有收到新的心率——通常是錶帶太鬆、手腕出汗打滑，或手錶暫時讀不到。
KINETIC 不會把最後一個數字留在畫面上假裝還在測量。中斷超過三十秒會顯示「GAP」並開始計時，戴好後會自動接續，心率折線圖上會留下那段缺口。
經常發生的話，把錶帶調緊一格、戴在腕骨上方兩指處會改善很多。
支援三種算法：最大心率（MHR）、儲備心率（HRR）、乳酸閾值（LTHR）。選「自動」的話，會依你填了哪些資料挑最準的那個——填得越完整挑得越準。
也可以完全自己來：在「個人設定」的計算方式選 CUSTOM，五個區間的下緣百分比都能自己填。教練給你一張表就照著填。
覺得整體偏鬆或偏緊，還有「整體微調」可以把所有區間一起平移最多 ±15 BPM。
「個人設定」› 心率上限提醒，打開開關即可。門檻可以跟著 Zone 5 下緣走（改了最大心率會自動更新），也可以自己填一個數字。
超過上限手錶會立刻震一次，之後每五秒再震一次，直到心率降回門檻以下才停。只在 OPS 自由訓練生效——Zone 2 課表本來就有進出區間的震動，VO2 Max 間歇的衝刺段本來就要衝到高心率，兩者都不適用。
OPS 自由訓練：不選課表、不設時限，按開始就計時，按結束才停。
BASE Zone 2：設好時長的定時有氧，掉出區間震兩下、回到區間震一下。
PEAK VO2 Max 間歇：挪威 4×4 或 Assault 死亡 60 秒，段落切換時手錶會震動提示。組數與衝刺／恢復秒數都能調。
不會上傳。KINETIC 沒有帳號也沒有伺服器，資料留在你的 iPhone、Apple Watch 與 Apple「健康」App 裡。詳見隱私權政策。
可以。手錶能獨立開始、進行、結束一場訓練，紀錄會在下次連上手機時自動同步過去。
前提是手機至少同步過一次個人設定——否則手錶只能用通用的預設心率區間。
在紀錄列表左滑刪除。要刪除全部資料的話，移除 App 即可；已經寫進「健康」App 的訓練需要另外在「健康」App 裡刪。
訂閱由 Apple 管理，不在 KINETIC 裡取消。到 iPhone「設定」› 點最上方你的名字 › 訂閱項目 › KINETIC，選擇取消。取消後在已付費的期間結束前仍然有效，之後不再扣款。
退款一律由 Apple 處理，開發者無法代為退款。請到 reportaproblem.apple.com 用你的 Apple 帳號登入後申請。
訂閱贊助綁在你的 Apple 帳號，不是綁裝置——用同一個 Apple 帳號登入新手機，在 App 裡點「回復購買」就會接回來。
一次性贊助屬於消耗性項目，送出當下就完成了，新裝置上不會留下紀錄。它本來就不解鎖任何功能，所以 App 的使用完全不受影響。
用來支持 KINETIC 繼續開發：實測器材、開發者帳號年費，以及把時間投入在新功能上。KINETIC 由一個人開發。
可以，隨時都行。打開任一筆紀錄就能寫文字、加照片、記課表明細（動作、組數、次數、重量），之後也還能再編輯。
Bug reports, feature requests and questions are all welcome. I reply personally, usually within a few business days.
An iPhone and an Apple Watch. The watch measures heart rate; the phone handles setup and your records. An Apple Watch is required — heart rate is the core of the app. Install KINETIC on both, on matching versions.
Usually a permissions issue. On iPhone: Health › Sharing › Apps and Services › KINETIC, and enable the heart-rate items. If it was denied on the watch, the app tells you directly and points the way. Start a new session once access is granted.
That means no new reading for over six seconds — usually a loose band or a sweaty wrist. The app won't leave the last number on screen as if it were still measuring. Past thirty seconds it shows "GAP" and counts; put the watch back on and it picks up again, leaving a gap in the heart-rate trace.
If it happens often, tighten the band one notch and wear it two fingers above the wrist bone.
Three methods: max heart rate (MHR), heart rate reserve (HRR) and lactate threshold (LTHR). On "auto" the most accurate available method is chosen from the data you've entered.
You can also set them yourself: pick CUSTOM under calculation method and enter the lower-bound percentage for all five zones. There's also a global offset of up to ±15 BPM if the whole set feels off.
Profile › Heart Rate Ceiling. Follow your Zone 5 lower bound, or enter your own number. Cross it and your watch buzzes immediately, then every five seconds until you drop back below. Open sessions (OPS) only — Zone 2 already buzzes on zone changes, and VO2 Max intervals are supposed to reach high heart rates.
Yes. The watch can start, run and finish a session on its own, and syncs the record next time it reaches your phone — provided your settings have synced from the phone at least once.
Subscriptions are managed by Apple, not inside KINETIC. On your iPhone: Settings › your name at the top › Subscriptions › KINETIC › Cancel. Access continues until the end of the period you've already paid for.
Refunds are handled entirely by Apple; developers cannot issue them. Request one at reportaproblem.apple.com with your Apple Account.
Subscription tips are tied to your Apple Account, not the device — sign in with the same account and tap "Restore Purchases".
One-time tips are consumable: once sent they're complete, and no record carries over to a new device. They unlock nothing, so nothing about using the app changes.
On your devices. No account, no server, nothing uploaded. See the privacy policy.