NightDiary – Private Diary
Lifestyle In-app purchases
Offline encrypted diary with PIN lock, mood tracking & photos. No account
- Downloads
- 4+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Aug 15
- 2026 · v1.1.2
Screenshots
About NightDiary – Private Diary
NightDiary is a private diary that stays truly private. No account, no cloud, no ads, no tracking — every entry and photo is encrypted and never leaves your phone.
WRITE IN SECONDS
Pick a mood emoji and your entry is saved instantly. Add a title, your thoughts and photos whenever you like — autosave keeps every word while you type.
YOUR DIARY, LOCKED
• PIN + fingerprint unlock
• Real encryption for the database and photos — not just a lock screen
• Progressive lockout against PIN guessing, surviving reboots
• Screenshots are blocked inside the app
SEE YOUR MONTH
• Timeline grouped by day, with a writing streak 🔥
• Mood calendar — one colored dot for every day you wrote
• Monthly mood chart with your best streak of the month (Pro)
• Full-text search that filters as you type
NEVER LOSE A PAGE
Export your whole diary into a single encrypted backup file that only your password opens. Restore it on any device — restoring is always free, no account needed.
NIGHTDIARY PRO — one-time purchase, no subscription
• Unlimited photos per entry
• Beautiful theme pack
• Monthly mood chart & insights
• Export your entire diary to PDF
• Encrypted backup export
PRIVATE BY DESIGN
• Works 100% offline — the only connection ever made is Google Play billing
• No analytics, no crash reporting, no data collection of any kind
• No camera or gallery permission — photos come through the system picker
From the maker of NightVault, the offline encrypted photo vault.
WRITE IN SECONDS
Pick a mood emoji and your entry is saved instantly. Add a title, your thoughts and photos whenever you like — autosave keeps every word while you type.
YOUR DIARY, LOCKED
• PIN + fingerprint unlock
• Real encryption for the database and photos — not just a lock screen
• Progressive lockout against PIN guessing, surviving reboots
• Screenshots are blocked inside the app
SEE YOUR MONTH
• Timeline grouped by day, with a writing streak 🔥
• Mood calendar — one colored dot for every day you wrote
• Monthly mood chart with your best streak of the month (Pro)
• Full-text search that filters as you type
NEVER LOSE A PAGE
Export your whole diary into a single encrypted backup file that only your password opens. Restore it on any device — restoring is always free, no account needed.
NIGHTDIARY PRO — one-time purchase, no subscription
• Unlimited photos per entry
• Beautiful theme pack
• Monthly mood chart & insights
• Export your entire diary to PDF
• Encrypted backup export
PRIVATE BY DESIGN
• Works 100% offline — the only connection ever made is Google Play billing
• No analytics, no crash reporting, no data collection of any kind
• No camera or gallery permission — photos come through the system picker
From the maker of NightVault, the offline encrypted photo vault.
What’s new
Version 1.1.2 · Updated August 15, 2026
First release of NightDiary 🌙 • Private diary with mood tracking — pick a mood, write, done • Real encryption for entries and photos, locked by PIN + fingerprint • Timeline, mood calendar, streaks and full-text search • Daily writing reminder • 100% offline — no account, no cloud, no ads, no tracking
Alternatives to NightDiary – Private Diary
Looking for apps like NightDiary – Private Diary? Here are 6 similar Android apps on Google Play. All of them are free to download.
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Antipode: Dig Through Earth
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| NightDiary – Private Diary | – | Free | 1+ | Aug 15, 2026 | |
| Antipode: Dig Through Earth | – | Free | – | – | Compare |
| Lovemark – Love Days Counter | – | Free | 50+ | Oct 5, 2026 | Compare |
| Cleanmark – Quit Day Counter | – | Free | 5+ | Oct 5, 2026 | Compare |
| Daymark – Countdown Widget | – | Free | 500+ | Oct 13, 2026 | Compare |
| NightBudget – Private Expenses | – | Free | 0+ | Aug 17, 2026 | Compare |
| NightDocs – Private Documents | – | Free | 10+ | Aug 16, 2026 | Compare |