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Best Secure Journaling App

38+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated September 2026

Penzu is the household name in secure journaling app, but it's far from the only option. We track 38+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Secure Journaling App (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1PenzuPenzuFree4.2★ (2.5K)NoYesSep 2026
2Digital Journal DiaryDigital Journal DiaryFree4.6★ (6.5K)NoYesSep 2026
3My Diary with password & lockMy Diary with password & lockFree4.7★ (601)YesYesSep 2026
4Notebook - Diary & Journal AppNotebook - Diary & Journal AppFree4.7★ (14K)YesYesSep 2026
5Slate - Private JournalSlate - Private JournalFree—NoYesSep 2026
6Personal Diary (Journal) AppPersonal Diary (Journal) AppFree4.4★ (104)NoYesJul 2026
7Shanti Journal: Diary & VoiceShanti Journal: Diary & VoiceFree3.0★ (1)YesNoSep 2026
8My Private Diary For GirlsMy Private Diary For GirlsFree4.0★ (692)NoYesSep 2026

Top Picks for Secure Journaling App

Penzu#1

Penzu by Penzu Inc.

Secure Diary & Private Journal
Editor's Choice
📊 Productivity
4.2😐(2.5K ratings)
FreeIn-App Purchases
Penzu screenshot 1
Penzu screenshot 2
Penzu screenshot 3
Penzu screenshot 4

This app provides a secure and private space for journaling, note-taking, and storing personal thoughts. It offers robust security features like password and PIN locks, encryption, and cloud syncing across devices. Users can also add photos and tags to their entries, making it a comprehensive digital diary.

What We Love

  • 🚀 Easy to use
  • 🔒 Secure and private
  • 📝 Convenient journaling on the go
  • 🗓️ Helpful reminders and date tracking
  • 💻 Syncs across devices

Room to Improve

  • 🐛 Frequent crashes and bugs
  • 🔑 Password issues and lockout problems
  • 📁 Syncing and data loss issues
  • 📱 Limited functionality on mobile app
  • 💰 Expensive premium subscription
Digital Journal Diary#2

Digital Journal Diary by Protection & Security App LLC

Private Journal - Photo,Video
Strong Contender
💪 Health & Fitness
4.6😊(6.5K ratings)
FreeIn-App Purchases
Digital Journal Diary screenshot 1
Digital Journal Diary screenshot 2
Digital Journal Diary screenshot 3
Digital Journal Diary screenshot 4
Digital Journal Diary screenshot 5
Digital Journal Diary screenshot 6

Document your life, track goals, and monitor your mood with this versatile journaling app. Enhance well-being, creativity, and productivity through daily reflection. Secure your entries with password protection and sync across devices.

What We Love

  • 🚀 Easy to use
  • 👍 Customizable features
  • 🔒 Password protection
  • 📝 Helps with journaling and self-expression
  • 🎨 Aesthetically pleasing
  • 💰 Free to use

Room to Improve

  • 🐛 Backup and sync issues
  • 🔍 Lack of spell check and autocorrect
  • 🔒 Concerns about privacy and security
  • 🤖 Poor voice transcription
  • 💬 Repetitive review prompts
My Diary with password & lock#3

My Diary with password & lock by 4TH FLOOR APPS SIA

Daily notes & private Journal
Worth Considering
🌟 Lifestyle
4.7😊(601 ratings)
FreeAdsIn-App Purchases
My Diary with password & lock screenshot 1
My Diary with password & lock screenshot 2
My Diary with password & lock screenshot 3
My Diary with password & lock screenshot 4
My Diary with password & lock screenshot 5
My Diary with password & lock screenshot 6

This app provides a private space to record thoughts, emotions, and activities. It features mood tracking, photo attachments, and customizable reminders to encourage self-reflection. Secure your entries with password or biometric protection and gain insights into your life patterns.

What We Love

  • 🚀 Great app
  • 🔒 Secure with password
  • 👍 Customizable options
  • 👍 Helps express feelings
  • 👍 Organized and easy to use

Room to Improve

  • 💰 Paid features
  • 🐛 Occasional crashes or loading issues

More Secure Journaling App apps to explore

FAQ about Secure Journaling App

What is the best secure journaling app for iPhone?
Penzu tops our secure journaling app ranking as of September 2026, with a 4.2-star average from 2.5K App Store ratings, and it's free to download.
Yes — 20 of the top secure journaling app we rank are free to download, including Penzu and Digital Journal Diary.
Penzu has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 38+ secure journaling app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Penzu is a popular free diary, journal, and notepad application designed to keep your private thoughts safe and secure. It allows you to write entries, sync them across devices via the Penzu cloud, and offers various security features to protect your personal information.
Key features include unlimited journaling, free cloud syncing, customizable journal covers, password and encryption locks for journals, the ability to add photos, app-level PIN lock, search functionality, tagging, and offline writing capabilities.