2026 年最佳 Android AI 日記 App：本機記錄、備份與隱私

先回答三個 Android 問題

Android 不只是另一個下載按鈕。使用者選擇 Android，往往看重裝置選擇、檔案存取權，以及對資料去向的更多控制；日記 App 應在要求你交出私密想法、照片和語音前，先尊重這些期待。

• 它是否真正支援 Android，而不只是桌面產品的簡化檢視器？
• 日記主副本在哪裡；離線時還能做什麼；是否必須登入？
• 換手機或平台時，如何備份、還原、匯出或遷移？

Memex 讓 Android 成為日記的主要歸宿

Memex 在 Google Play 上提供，為文字、照片和語音的行動記錄而設計。記錄、卡片和知識以 Markdown 檔案與本機 SQLite 資料庫保存，Android 手機不是把日記導向他人雲端的入口；App 也支援生物辨識鎖定。

Android 的開放性在這裡很有價值：可使用 App 儲存空間、自訂資料夾或 iCloud Drive，並始終保有可檢查、匯出和還原的主要記錄。對技術使用者而言，Memex 也是開源的，可檢查儲存與 AI 路由邏輯，或按工作流程延伸它。

Android 備份與跨平台存取如何運作

Memex 支援一鍵完整備份與還原。資料可放在 App 儲存空間、自訂資料夾或 iCloud Drive；需要遷移時，完整備份可分享至 Google Drive 或其他位置。這提供從 Android 移到新手機或其他平台的實用途徑，同時保留原始檔案。

這是可攜式備份與還原模式，並非承諾每台裝置間持續即時雙向同步。若優先考慮資料所有權與減少強制雲端託管，本機記錄加上可見的備份路徑通常是更好的取捨；之後 AI 才協助將文字、照片和語音整理為可搜尋的時間線卡片。

What is the best AI journaling app for Android?

Memex is the strongest fit if you want Android to be the primary home for your journal: the app is available on Google Play, records stay local-first, and AI can organize text, photos, and voice into searchable timeline cards. It is less suitable if you need a fully managed cloud journal with live two-way sync across every device.

Is Memex available as an Android app?

Yes. Memex is available on Google Play and is built for iOS and Android. It supports text, photo, and voice capture in the mobile app, so Android is a primary product surface rather than a browser-based companion.

Where does Memex store Android journal data?

Memex stores records, cards, and knowledge on your device as Markdown files and a local SQLite database. You can use app storage, a custom folder, or iCloud Drive for storage and backup choices. No Memex account or Memex-hosted journal server is required.

How do I back up or move a Memex journal to another platform?

Use the one-tap full backup and restore flow. Memex supports iCloud Drive, a custom folder, and app storage; a full backup can also be shared to Google Drive or another location. Treat this as a portable backup-and-restore path, not a promise of continuous real-time two-way sync.

How does Memex protect private Android journal entries?

The primary record stays on your device, and the app supports biometric locking. When you use AI, prompts go directly to the model provider you choose, so you should review that provider's privacy terms as a separate decision from where your journal is stored.

Is Memex free on Android?

The Memex app is free to download. AI usage depends on the model provider you choose; some providers offer free tiers, while others charge for usage.

Is Memex available on Android?

Yes. Memex is available on Google Play and is built as a local-first AI journal for mobile capture across text, photos, voice, reminders, and timeline cards.