Diary with Lock: Mood Journal

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About this app

Diary with Lock is a private diary and journal app that stays on your phone. Write daily journal entries, track your mood, add photos and keep everything locked with a PIN or fingerprint. No account, no ads, no internet permission: your diary never leaves your device unless you back it up.

🔒 PRIVATE DIARY WITH LOCK
• Lock your diary with a PIN or fingerprint
• Lock single entries with their own password (AES-256 encryption)
• No sign-up, no account, no analytics
• Works fully offline: the app has no internet permission
• Deleted entries stay in the trash for 30 days

😊 MOOD TRACKER & MOOD JOURNAL
• Pick your mood and activities for every entry
• See mood trends, your Year in Pixels and which activities lift your mood
• Writing streaks, insights and achievements keep you journaling every day

📝 WRITE YOUR WAY
• Daily journal prompts and ready-made templates
• Add photos, location, weather and tags
• Simple formatting: bold, headings, lists and checklists
• Choose your journal font, text size and colors
• Listen to your entries with read aloud

📅 RELIVE YOUR MEMORIES
• Calendar view of every day you wrote
• "On this day" brings back entries from past years
• Search by word, tag or voice
• Countdowns for birthdays, trips and important days

🔔 BUILD A DAILY JOURNALING HABIT
• Daily reminders on the days you choose
• Home screen widgets: writing streak and recent entries
• Quick settings tile to start a new entry in one tap

☁️ BACKUP & EXPORT
• Password-protected backup in a single file
• Automatic backups to Google Drive, OneDrive, Dropbox or any folder
• Move to a new phone and restore everything in minutes
• Export your diary to PDF, HTML or CSV

🎨 BEAUTIFUL & SIMPLE
• Light, dark and pure black themes
• 8 color themes plus your own custom color
• Available in English, Deutsch, Español, Français, हिन्दी, Italiano, 日本語, 한국어, Русский, 简体中文, 繁體中文 and Santali

✍️ ONE APP, MANY JOURNALS
Use it as a personal diary, daily journal, gratitude journal, mood diary, travel journal, dream journal or a secret notebook for your thoughts.

Start writing today. Your private diary with lock is ready.
Private diary & journal with lock. Mood tracker, photos & backup. Works offline
Updated on
Oct 25, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

Welcome to Diary with Lock, your private diary and mood journal!
• Lock your diary with a PIN or fingerprint
• Encrypt single entries with their own password
• Track your mood and activities, see insights and Year in Pixels
• Add photos, tags, weather and location
• Journal prompts, templates, reminders and widgets
• Backup to Google Drive and export to PDF
• Works offline. No account, no ads.
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