Diary with lock: Daily Journal

Contains adsIn-app purchases
4.8
1.29M reviews
Content rating
Everyone
50M+
Downloads
Content rating
Everyone
Digital Purchases
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About this app

Diary with lock is a private diary and daily journaling app that is secure and super easy to use. Write about your day, your thoughts and your memories, and keep it all behind a lock that only you can open.

Every journal entry has its own title and date, so your diary stays neat, organized and easy to read back.

PRIVATE
Your diary is personal, a secret diary for your eyes only. Lock it with a PIN code, a password that only you know. Then you can write freely, because your notes are safe behind your lock, even if someone borrows your phone. It is a safe place for your thoughts, your feelings and your secrets.

SIMPLE AND EASY TO USE
Journaling should not feel like work. Open the app, write a few lines, and you are done. The clean and simple design keeps the focus on your writing, without clutter or distractions. That is what makes this diary so easy to use, every day.

This diary is intentionally focused on one thing: your writing. You will not find stickers, feeds or other distractions here. It is just you and your words.

USE IT YOUR WAY
A diary is personal, and so is the way you use it. Some people write a daily journal about everyday life, while others keep a travel diary on their trips. You can also use it as a dream journal, or as a gratitude journal where you collect the good moments. Write long entries or single sentences. It is your diary, so you make the rules.

NEVER LOSE YOUR MEMORIES
Create an optional backup account and your diary is kept safe, even if your phone is lost, stolen or replaced. You can also sync your journal between devices.

SMALL, FAST AND OFFLINE
Diary with lock is a lightweight app that starts instantly and runs smoothly even on older phones. No account is required to start writing. Just open the app and write your first entry. Everything works offline.

FEATURES
• Lock your diary with a PIN code
• Write as many journal entries as you like
• Search your notes, or browse them by year
• Optional backup, and sync between your devices
• A daily reminder helps you build a journaling habit
• Make it yours: background colors, text size and font style
• Export your diary whenever you want
• Works offline, write anywhere, anytime

WHY KEEP A DIARY?
Writing a private journal is a healthy habit. It helps you sort your thoughts, remember the good days and understand the difficult ones. Start small: a few sentences about today is enough. In a year, you will love reading it back.

Made with love in Norway.

Your diary. Your thoughts. Locked.
Updated on
Dec 1, 2024

Data safety

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.
This app may share these data types with third parties
Personal info, App activity and 2 others
This app may collect these data types
Personal info, Calendar and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

1.14M reviews
shelbee500 (bea)
July 17, 2026
I love this app a lot, it's so good! it's really easy to use, the interface is very simple and there are some nice customization features. my only gripes are that when I type in my pass code lock, it says it's invalid even when im typing in the correct code. also I think this app could be elevated with being able to add photos, videos images, being able to draw and overall more customization features. it would just feel more like writing in a physical diary. this app is awesome though!
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WriteDiary.com
July 21, 2026
Hi Bea, thank you for the wonderful feedback! The passcode issue is not normal, please email support@writediary.com so we can fix it with you. Photos and drawing are on our list of requested features. Thanks for the great suggestions! :)
Dusty Durham
June 12, 2026
I really like this app a lot. I have used it for many years. The only thing I would like to have is the ability to create different calenders or journals. For example, everyday I create an entry for Prayers. Another entry for Journaling. Another entry for gratitude. etc. etc. Rather than search Prayers to see all my entries, I would go to Prayers to see what I wrote in each date. Then go to Gratitude and do the same. Other than that above, its my go to app for all kinds of stuff.
10 people found this review helpful
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WriteDiary.com
July 15, 2026
Hi, thank you for the kind words and for so many years with us! Separate journals for prayers, gratitude and more is a lovely idea, it is on our wishlist now. We keep the app simple on purpose, but we hear you. Enjoy! 😊
Melissa Hughes
August 23, 2024
This journal app is great! I've tried a bunch of the diary apps available on the Play store & this one is my hands down favorite. First, it's very easy to use & navigate. Second, though it does have a reasonably priced premium version available, the freebie offers plenty of different fonts, backgrounds, insert options & colors, so you won't be disappointed. Lastly, the diary offers a password-protected home screen so that you can keep your innermost thoughts to your innermost self.
222 people found this review helpful
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What’s new

- Added translation to more languages.
- Updated privacy policy and terms of service
- Fixed create new note button for Android 15
- Better accessebillty support.
- A few design tweaks