🚗 養車管家AI

養車管家AI 本身免費。但你需要 OpenAI 或 Groq 的 API Key，使用費會由 LLM 服務商直接向你收取（按照他們各自的定價）。一次帳單掃描通常花費不到 US$0.01（Groq 免費額度內）至 US$0.05（OpenAI GPT-5.4 視覺辨識模式）。

The app itself is free. However, you need an API key from OpenAI or Groq and pay usage fees directly to them at their published rates. A single receipt scan typically costs less than US$0.01 (within Groq's free tier) up to about US$0.05 (OpenAI GPT-5.4 in AI Vision mode).

最常見原因是：光線不足、角度太歪、API Key 無效、或達到用量限制。建議：重新拍一張更清楚的照片、或切換到「AI 視覺辨識」模式（對手寫與模糊帳單更穩）、或到設定頁確認 API Key 仍然有效。

The most common causes are: bad lighting, skewed angle, invalid API key, or rate limits. Try retaking a clearer photo, switching to "AI Vision" mode (more reliable on handwritten or blurry receipts), or verifying your API key in Settings.

AI 辨識不是 100% 完美。你可以在確認頁或紀錄詳情頁直接點擊任何欄位（類別、日期、店家、里程、項目）進行編輯，總金額會自動重新計算。

AI recognition isn't perfect. You can tap any field (category, date, shop, mileage, line items) directly in either the confirm screen or the saved record's detail view to edit it. The total cost recalculates automatically.

完全存在你的裝置上：API Key 在 iOS Keychain，保養紀錄在 SwiftData 本地資料庫。開發者沒有伺服器，不會收到任何資料。唯一的對外連線是當你主動掃描時，帳單內容（純文字或整張圖片，看你選的掃描模式）會送到你選定的 LLM 服務商。

Everything lives on your device: API keys in iOS Keychain, records in a local SwiftData database. The developer has no servers and receives nothing. The only outbound traffic happens when you actively scan — receipt contents (plain text or the full image, depending on scan mode) go to your chosen LLM provider.

設定頁 → 顯示語言 → 選擇「自動 / Auto」（跟隨系統）、「繁體中文」或「English」。切換後立即生效，不用重開 app。

Settings → Display Language → pick "Auto" (follows system), "Traditional Chinese", or "English". The change applies immediately without needing to relaunch the app.

設定頁 → 顯示幣別。預設會根據你的裝置地區自動選擇（台灣→TWD、其他→USD），也可以手動覆蓋。TWD 顯示整數（NT$2,760），USD 保留小數（$34.99）。

Settings → Display Currency. Defaults to your device region (Taiwan → TWD, elsewhere → USD) and can be overridden manually. TWD shows whole numbers (NT$2,760); USD preserves decimals ($34.99).

設定頁 → 距離單位 → 選 KM 或 MI。預設會依你的裝置地區自動判斷（美國→英里、其他→公里）。app 內部一律以公里儲存里程資料，切換單位只影響顯示與輸入，既有紀錄不會被重新寫入。因此，一位台灣使用者如果切換到英里模式瀏覽舊紀錄，看到的是精確的 km → mi 換算值；使用者重新切回公里模式時，紀錄值完全不變。掃描美式帳單時，LLM 會在辨識階段把「Odometer: 45,230 mi」乘以 1.609 換成公里後回傳，所以儲存層永遠保持一致。

Settings → Distance Unit → pick KM or MI. Defaults to your device region (US → miles, elsewhere → kilometers). The app always stores mileage in kilometers internally; switching units only affects display and input, and existing records are never rewritten. So a Taiwan user switching to miles to view old records sees an accurate km → mi conversion, and switching back to km leaves the stored values unchanged. When scanning US receipts, the LLM multiplies an "Odometer: 45,230 mi" reading by 1.609 to return kilometers, so the storage layer stays consistent.

在設定頁點擊任何車輛右側的垃圾桶按鈕即可刪除該車輛以及底下的所有保養紀錄（級聯刪除）。若要完全移除所有資料，最徹底的方法是從 iOS 的 app 列表中刪除本 app —— SwiftData 資料庫與 Keychain 條目都會一併被 iOS 清掉。

In Settings, tap the trash icon next to any vehicle to delete that vehicle and all its records (cascaded). For a full wipe, uninstall the app from iOS — the SwiftData database and Keychain entries are removed automatically by iOS.

這通常發生在台灣帳單使用民國紀年（例如「民國 115 年」）時。最新版本的 app 已經在 LLM prompt 裡加入民國→西元的轉換規則，新掃描的帳單應該會自動處理。若看到既有紀錄日期錯誤，可以在紀錄詳情頁直接點日期欄位修正。

This typically happens with Taiwan receipts using Republic of China (ROC) calendar notation (e.g. "民國 115 年"). The latest version of the app includes ROC-to-Gregorian conversion rules in the LLM prompt, so new scans should handle this automatically. For existing records with wrong dates, tap the date field in the record detail view to correct it.