Best Lock Diary Apps

248+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our lock diary list covers 248+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Lock Diary Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Daily Journal: Diary with LockDaily Journal: Diary with LockFree4.8★ (5.7K)YesYesNov 2026
2Diary With PasswordDiary With PasswordFree4.7★ (27K)NoYesNov 2026
3Diamond Diary Notes With LockDiamond Diary Notes With LockFree4.4★ (8.9K)YesYesNov 2026
4My Diary - Journal with LockMy Diary - Journal with LockFree4.7★ (28K)YesYesNov 2026
5My Diary: Private Journal LockMy Diary: Private Journal LockFree5.0★ (2)YesYesNov 2026
6Notebook - Diary & Journal AppNotebook - Diary & Journal AppFree4.7★ (14K)YesYesNov 2026
7Secret Diary with Lock - MuseSecret Diary with Lock - MuseFree4.8★ (740)YesYesNov 2026
8Secret Diary with LocksSecret Diary with LocksFree—NoYesNov 2026

Top Picks for Lock Diary

Daily Journal: Diary with Lock#1

Daily Journal: Diary with Lock by SimpleInnovation LLC

Your Private Secret Journaling
Editor's Choice
🌟 Lifestyle
4.8😊(5.7K ratings)
FreeAdsIn-App Purchases
Daily Journal: Diary with Lock screenshot 1
Daily Journal: Diary with Lock screenshot 2
Daily Journal: Diary with Lock screenshot 3
Daily Journal: Diary with Lock screenshot 4
Daily Journal: Diary with Lock screenshot 5
Daily Journal: Diary with Lock screenshot 6

This app serves as a private digital journal to record daily experiences, emotions, and memories. Secure your entries with password, fingerprint, or face ID, and enhance them with photos. Track your moods and use built-in reminders to cultivate a consistent journaling habit.

What We Love

  • 🔒 Secure with password and biometric lock
  • 📝 Allows easy journaling and expression of feelings
  • 🎨 Customizable themes and backgrounds
  • 📊 Mood tracking and insights
  • 🆓 Free to use with no ads or subscriptions

Room to Improve

  • 🔑 Limited free features, many premium options
  • 🖼️ Inability to use own photos as backgrounds
  • 🕰️ No reminders to write daily entries
Diary With Password#2

Diary With Password by 帆 杨

No Ads Journal Diary Notebook
Strong Contender
📊 Productivity
4.7😊(27K ratings)
FreeIn-App Purchases
Diary With Password screenshot 1
Diary With Password screenshot 2
Diary With Password screenshot 3
Diary With Password screenshot 4
Diary With Password screenshot 5
Diary With Password screenshot 6

This app provides a private digital space to record daily thoughts, emotions, and life events. It offers robust security features like password and biometric locks, alongside tools for organizing, searching, and exporting your entries. Enjoy a customizable and ad-free journaling experience.

What We Love

  • 💻 Simple and easy to use
  • 🔒 Password protection
  • 📝 Customizable fonts and layout
  • ⏱️ Time stamp feature
  • 🔓 No ads or paywalls
  • 🧠 Helps with mental health and journaling
  • 🗓️ Organized and easy to navigate entries

Room to Improve

  • 🔍 Difficulty finding/accessing past entries
  • 🖼️ No image/media support
  • 🔄 Lack of syncing across devices
  • 🔒 Password recovery issues
  • 🔧 Limited customization options
Diamond Diary Notes With Lock#3

Diamond Diary Notes With Lock by Milica Petrovic

Secret Journal with Password
Worth Considering
📊 Productivity
4.4😐(8.9K ratings)
FreeAdsIn-App Purchases
Diamond Diary Notes With Lock screenshot 1
Diamond Diary Notes With Lock screenshot 2
Diamond Diary Notes With Lock screenshot 3
Diamond Diary Notes With Lock screenshot 4
Diamond Diary Notes With Lock screenshot 5

Securely record your thoughts, memories, and ideas in a private digital journal. Personalize entries with photos, emoticons, and custom fonts. Protect your secrets with password, pattern, or biometric locks.

What We Love

  • 💎 Customizable fonts and images
  • 📆 Organized calendar view
  • 🔒 Secure diary for personal thoughts
  • 📝 Convenient digital diary on phone

Room to Improve

  • 💰 Paid lock feature
  • 🔍 Lack of free privacy options
  • 📢 Excessive ads
  • 🤔 Confusing date display

More Lock Diary apps to explore

FAQ about Lock Diary

What are the best lock diary apps for iPhone?
Daily Journal: Diary with Lock tops our lock diary apps ranking as of November 2026, with a 4.8-star average from 5.7K App Store ratings, and it's free to download.
Yes — 20 of the top lock diary apps we rank are free to download, including Daily Journal: Diary with Lock and Diary With Password.
Daily Journal: Diary with Lock shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 248+ lock diary apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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