Best Ultra Simple Diary Apps

225+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated July 2026

Out of 225+ ultra simple diary apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Ultra Simple Diary Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Ultra Simple DiaryUltra Simple DiaryFreeYesYesJul 2026
2Secret Diary With PasscodeSecret Diary With PasscodeFree4.6★ (8.1K)YesNoJul 2026
3Notebook - Diary & Journal AppNotebook - Diary & Journal AppFree4.7★ (14K)YesYesJul 2026
4My Diary - Journal with LockMy Diary - Journal with LockFree4.7★ (28K)YesYesJul 2026
5Card Diary - Journal, DiaryCard Diary - Journal, DiaryFree4.7★ (1.3K)NoYesJul 2026
6Grid Diary ClassicGrid Diary ClassicFree4.4★ (768)NoYesJul 2026
7Simple Diary - Daily JournalSimple Diary - Daily JournalFree4.7★ (907)YesYesJul 2026
8Diary With PasswordDiary With PasswordFree4.7★ (26K)NoYesJul 2026

Top Picks for Ultra Simple Diary

Secret Diary With Passcode#2

Secret Diary With Passcode by Berce Alin

Secret diary
Strong Contender
🌟 Lifestyle
4.6😊(8.1K ratings)
FreeAds
Secret Diary With Passcode screenshot 1
Secret Diary With Passcode screenshot 2
Secret Diary With Passcode screenshot 3
Secret Diary With Passcode screenshot 4
Secret Diary With Passcode screenshot 5

This app provides a secure and user-friendly platform to record your daily life, emotions, and secrets. It offers features like password protection, mood selection, and photo attachments to help you preserve your memories privately.

What We Love

  • 🔒 Password protection
  • 💡 Customizable themes and fonts
  • 👍 Easy to use
  • 🚀 Unlimited entries

Room to Improve

  • 🐛 Entries disappearing or not saving properly
  • 📢 Excessive ads
  • 🔒 Password issues (unable to reset, incorrect password not working)
Notebook - Diary & Journal App#3

Notebook - Diary & Journal App by Koji Ito

A diary that flips like a book
Worth Considering
📊 Productivity
4.7😊(14K ratings)
FreeAdsIn-App Purchases
Notebook - Diary & Journal App screenshot 1
Notebook - Diary & Journal App screenshot 2
Notebook - Diary & Journal App screenshot 3
Notebook - Diary & Journal App screenshot 4
Notebook - Diary & Journal App screenshot 5

This app offers a natural journaling experience by organizing daily notes on a single page, allowing you to flip through your entries like a physical book. It prioritizes simplicity, security with passcode locks, and seamless iCloud synchronization for easy access across devices.

What We Love

  • 👍 Simple and easy to use
  • 🔒 Password protection
  • 💡 Convenient for journaling and note-taking
  • 🚀 Smooth and responsive

Room to Improve

  • 🐛 Occasional crashes or glitches
  • 🚫 Unable to insert photos or attachments
  • 🚫 Limited formatting options

More Ultra Simple Diary apps to explore

4
My Diary - Journal with Lock
My Diary - Journal with Lock
My Diary - Journal with Lock
Journaling Diary with password
Free

This app offers a secure and personalized digital journal for recording daily thoughts, memories, and emotions. Enhance entries with photos, themes, and mood tracking. It's designed to support mental well-being by providing a private space for self-reflection and emotional processing.

Password-protected diaryAdd photos and drawingsCustomizable themes and backgrounds
🌟 Lifestyle
(28K)
free with in-app purchases
5
Card Diary - Journal, Diary
Card Diary - Journal, Diary
Card Diary - Journal, Diary
Simple Journal & Daily Journal
Free

This app offers a simple and beautiful way to journal your daily experiences. Easily record thoughts, emotions, and memories with text or photos, making each day feel meaningful. Customize your entries with backgrounds, fonts, and tags.

Decorate cards with photos or colorsRecord multiple diaries per dayCalendar view
🌟 Lifestyle
(1.3K)
free with in-app purchases
6
Grid Diary Classic
Grid Diary Classic
Grid Diary Classic
Simple way to journal
Free

This journaling app offers a unique grid-based format with prompts to overcome writer's block. It allows for photo attachments, full-text search, and health data integration. Advanced features like passcode lock and cloud sync are available through a subscription or one-time purchase.

Unique grid format for journalingPrompt library for writing inspirationPhoto attachment to entries
🌟 Lifestyle
(768)
freemium
7
Simple Diary - Daily Journal
Simple Diary - Daily Journal
Simple Diary - Daily Journal
Journaling with lock, notebook
Free

This app provides a simple and convenient way to journal your thoughts and experiences. It allows you to add images, secure your entries with a passcode, and customize the app's appearance. Data backup and search functions ensure your memories are safe and easily accessible.

Insert images into entriesSecure passcode lock (Face ID/Touch ID)Customizable theme colors and app icon
🌟 Lifestyle
(907)
free with in-app purchases
8
Diary With Password
Diary With Password
Diary With Password
No Ads Journal Diary Notebook
Free

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.

Password and biometric securityDaily entry loggingFull text search
📊 Productivity
(26K)
free with in-app purchases
9
AteMate Food Journal: AI Coach
AteMate Food Journal: AI Coach
AteMate Food Journal: AI Coach
Photo Diary, Habits & Sleep
Free

This app helps you build healthier habits by reflecting on your daily food, movement, sleep, hydration, and mood. It uses AI to analyze your journal entries and provide personalized insights, making progress sustainable without strict rules or judgment.

Photo-based meal journalingHolistic health timelineAI-powered food analysis
💪 Health & Fitness
(10K)
free with in-app purchases
10
Penzu
Penzu
Penzu
Secure Diary & Private Journal
Free

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.

Unlimited journalingCloud sync for freePassword and PIN locks
📊 Productivity
(2.5K)
free with in-app purchases
11
Day One: Daily Journal & Diary
Day One: Daily Journal & Diary
Day One: Daily Journal & Diary
Личный дневник благодарности
Free

Record your life with a private digital journal. Securely save text, photos, audio, and video. Features include reminders, prompts, and automatic data import to help you stay consistent and reminisce.

Unlimited text entriesRich text formattingPhoto and video support
💪 Health & Fitness
(117K)
freemium
12
Prompted Journal - Shadow Work
Prompted Journal - Shadow Work
Prompted Journal - Shadow Work
Private journaling for therapy
Free

This app provides a guided journaling experience with over 190 prompts and "Dive Deeper" questions to encourage self-reflection and personal growth. It helps users establish a consistent self-care routine through daily reminders and offers privacy with no data storage required.

190+ journal prompts"Dive Deeper" questionsDaily reminders
🌟 Lifestyle
(6.9K)
free with in-app purchases
13
triday: daily diary
triday: daily diary
triday: daily diary
your diary, three lines a day
Free

This app offers a minimalist daily journaling experience, allowing users to write just three lines each day. It focuses on simplicity and privacy, providing a gentle prompt and historical entry review without overwhelming features.

Three-line daily entriesGentle daily promptOn this day feature
🌟 Lifestyle
(34)
free with in-app purchases
14
Diary, Journal, Notes - Diaro
Diary, Journal, Notes - Diaro
Diary, Journal, Notes - Diaro
Your Personal & Secure Diary
Free

Record daily activities, thoughts, and memories securely. Organize entries with tags, locations, and folders. Sync across devices and export your data easily. Features include mood tracking, photo attachments, and a calendar view.

Secure PIN and fingerprint lockCustomizable themes and 30+ languagesPowerful search and filtering
🌟 Lifestyle
(4.3K)
freemium
15
Journey - Diary, Journal
Journey - Diary, Journal
Journey - Diary, Journal
Daily Motivation & Journal
Free

This app helps you capture memories, express yourself through writing, and track your emotions. It offers tools for creating rich journal entries, collaborative journaling, and secure storage. Enhance your experience with templates, plugins, and reminders for a more mindful and organized life.

Capture memories with photos, videos, and audioRich text editor with formatting optionsMood tracking and emotional fluctuation analysis
🌟 Lifestyle
(5K)
freemium
16
Diary - Journal with password
Diary - Journal with password
Diary - Journal with password
Beautiful diary with password
Free

This app provides a secure and beautiful space to record your thoughts, plans, and life moments. Protect your entries with a password and enjoy a customizable interface with features like image support and PDF export.

Password protection with PINAdd/edit/remove imagesSearch functionality
🌟 Lifestyle
(1.6K)
free with in-app purchases
17
Memos - Digital Journal Diary
Memos - Digital Journal Diary
Memos - Digital Journal Diary
Private Journal - Photo,Video
Free

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.

Add photos, videos, and audio recordingsTrack mood, goals, and activitiesCreate to-do lists and business plans
💪 Health & Fitness
(6.5K)
free with in-app purchases
18
Quick Diary
Quick Diary
Quick Diary
by TopOfStack Software Limited
Free

This free application combines quick notes, sticky notes, and diary entries into a single, convenient tool. Easily save, edit, delete, search, and share your written thoughts and daily life moments.

Quick note takingSticky note functionalityDiary entries
📊 Productivity
(14)
free with in-app purchases
19
Simple Daily Diary
Simple Daily Diary
Simple Daily Diary
Easiest way to journal
Free

Capture your everyday moments with a fast, easy, and beautifully designed journaling app. Add custom titles, personalize with themes, and easily find past entries with smart search. Sync across devices and enjoy local backups for peace of mind.

Add custom titles to entries20+ handpicked color themesSmart search by date or keywords
🌟 Lifestyle
(1.2K)
free with in-app purchases
20
UpNote - notes, diary, journal
UpNote - notes, diary, journal
UpNote - notes, diary, journal
Beautiful. Simple. Easy to use
Free

This app provides a clean and beautiful interface for writing and organizing notes, journals, and to-do lists. It offers rich formatting options, an intuitive organization system, and instant syncing across devices, with offline capabilities. Premium features include enhanced security and export options.

Rich text editor with formatting toolsIntuitive organizing system (notebooks, pins, links)Secure note locking with Touch/Face ID
📊 Productivity
(1K)
freemium

FAQ about Ultra Simple Diary

Are there free ultra simple diary apps for iPhone?
Yes — 20 of the top ultra simple diary apps we rank are free to download, including Ultra Simple Diary and Secret Diary With Passcode.
Ultra Simple Diary shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 225+ ultra simple diary apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.