Diary with Lock
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Everyone
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About this app
Tired of apps that sync your thoughts to the cloud?
Diary with Lock is a private diary and notepad that stays on your phone. Write freely, lock what is personal, and keep every page offline — no account, no sign-in, no server.
A clean notebook feel. Your words. Only you.
━━━━━━━━━━━━━━━━━━━━━━━━━
🔒 DIARY WITH LOCK
━━━━━━━━━━━━━━━━━━━━━━━━━
Protect any page with a 4-digit PIN.
Forget the PIN? Recover offline with a paper key or a security question only you know.
Your secret diary stays private on this device.
━━━━━━━━━━━━━━━━━━━━━━━━━
✏️ NOTES & DAILY JOURNAL
━━━━━━━━━━━━━━━━━━━━━━━━━
Write unlimited pages.
Ruled paper — calm, not noisy.
Add photos to any entry.
Bookmark the pages you want close.
━━━━━━━━━━━━━━━━━━━━━━━━━
✅ TO-DO LISTS INSIDE PAGES
━━━━━━━━━━━━━━━━━━━━━━━━━
Add a checklist to any diary page.
Tick tasks as the day moves.
Notes and to-dos in one place.
━━━━━━━━━━━━━━━━━━━━━━━━━
🗂️ SECTIONS, LABELS & SEARCH
━━━━━━━━━━━━━━━━━━━━━━━━━
Create your own sections and labels.
Star favourites.
Search the whole diary.
Browse days on a calendar.
━━━━━━━━━━━━━━━━━━━━━━━━━
📄 EXPORT & BACKUP
━━━━━━━━━━━━━━━━━━━━━━━━━
Export a page as PDF, text, markdown, or image.
Share to WhatsApp, email, or any app.
Backup the full diary — including photos — and restore when you need.
━━━━━━━━━━━━━━━━━━━━━━━━━
🌙 COVERS, LIGHT & DARK
━━━━━━━━━━━━━━━━━━━━━━━━━
Choose a cloth cover you like.
Light, dark, or follow the system.
Easy on the eyes, day or night.
Why people choose Secret Diary with Lock:
• Private diary with PIN lock
• Fully offline — nothing uploaded
• Notes, photos, lists & journal in one app
• PDF export and local backup
• No Google account required
Secret diary. Private notes. Lock. Photos. Lists. PDF.
Download Secret Diary with Lock — a diary you will actually open.
Diary with Lock is a private diary and notepad that stays on your phone. Write freely, lock what is personal, and keep every page offline — no account, no sign-in, no server.
A clean notebook feel. Your words. Only you.
━━━━━━━━━━━━━━━━━━━━━━━━━
🔒 DIARY WITH LOCK
━━━━━━━━━━━━━━━━━━━━━━━━━
Protect any page with a 4-digit PIN.
Forget the PIN? Recover offline with a paper key or a security question only you know.
Your secret diary stays private on this device.
━━━━━━━━━━━━━━━━━━━━━━━━━
✏️ NOTES & DAILY JOURNAL
━━━━━━━━━━━━━━━━━━━━━━━━━
Write unlimited pages.
Ruled paper — calm, not noisy.
Add photos to any entry.
Bookmark the pages you want close.
━━━━━━━━━━━━━━━━━━━━━━━━━
✅ TO-DO LISTS INSIDE PAGES
━━━━━━━━━━━━━━━━━━━━━━━━━
Add a checklist to any diary page.
Tick tasks as the day moves.
Notes and to-dos in one place.
━━━━━━━━━━━━━━━━━━━━━━━━━
🗂️ SECTIONS, LABELS & SEARCH
━━━━━━━━━━━━━━━━━━━━━━━━━
Create your own sections and labels.
Star favourites.
Search the whole diary.
Browse days on a calendar.
━━━━━━━━━━━━━━━━━━━━━━━━━
📄 EXPORT & BACKUP
━━━━━━━━━━━━━━━━━━━━━━━━━
Export a page as PDF, text, markdown, or image.
Share to WhatsApp, email, or any app.
Backup the full diary — including photos — and restore when you need.
━━━━━━━━━━━━━━━━━━━━━━━━━
🌙 COVERS, LIGHT & DARK
━━━━━━━━━━━━━━━━━━━━━━━━━
Choose a cloth cover you like.
Light, dark, or follow the system.
Easy on the eyes, day or night.
Why people choose Secret Diary with Lock:
• Private diary with PIN lock
• Fully offline — nothing uploaded
• Notes, photos, lists & journal in one app
• PDF export and local backup
• No Google account required
Secret diary. Private notes. Lock. Photos. Lists. PDF.
Download Secret Diary with Lock — a diary you will actually open.
Diary with lock. Private notes, photos, lists & PDF. Offline. No account.
Updated on
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 partiesLearn more about how developers declare sharing
- This app may collect these data typesDevice or other IDs
- Data is encrypted in transit
- Data can’t be deleted
What’s new
What’s new
• Smoother private lock flow for PIN & page lock
• Export your pages as PDF, text, markdown or image
• Backup & restore still available for your full diary
• Stability and performance improvements
• AdMob updated so Secret Diary stays free to use
