My Diary & Journal with Lock

Contains adsIn-app purchases
33.9K reviews
Content rating
PEGI 3
1M+
Downloads
Enjoy this app and many more, free of ads and in-app purchases, with a Google Play Pass subscription. Terms apply. Learn more
Content rating
PEGI 3
In-app purchases
Learn more
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About this app

Quillio is a unique personalized diary journal that allows you to write anything from quick notes in seconds to long life-changing insights using colorful themes, audio recordings, and photos. Writing journal has never been easier before. This personal diary with a lock has so many options that millions of users have a million different versions of my diary app.

✨A digital journal with a lock is a safer and more practical version than a traditional journal notebook with a pencil.
✨We personalized UI/UX so if you write daily diaries with a personal touch, you will start to call this app “my diary”.
✨You will get a daily diary that is visually pleasing and easy to use.


Why you should try My Diary & Journal with Lock:

📒 Secret Diary - Write, it's good for you. A gratitude daily diary can be a great way to improve your mood. You can record your parties, use emojis as a mood tracker, and include photos in this journal with lock. Use it as your private, secure daily journal notebook and free writing diary.

🎨 Themes and Fonts - When writing private journals at night it is better to use a dark theme, and my diary offers you beautiful dark themes. There are also a lot of other delightful themes that may suit you at any other time. You can sort your daily diary and notes by time, date, or alphabetical order. Use bold, italic, underline, and dozens of other options.

📸 Photo Journal - Save your memories by uploading photos to your daily diary. You can create a journey journal by adding your adventure photos. Upload your before and after fitness transformation photos, your favorite recipes, and private photos of you and your loved ones. We give you all the freedom to create your personal photo diary.

🔐 Codelock - It's time to transfer the secrets from your mind to a journal with a lock. This private diary journal will keep your secrets after setting your diary password. Use my secret diary with a lock anywhere, any time, as much as you want. My secret diary will never let your memories down.

🤩 Mood leaderboard - With various adorable stickers, this free diary journal can be used as a mood diary tracker software. It will help you in mood tracking and accompanying any event worth recording, such as the laughs with your pals about memories or lessons from your mistakes.

☁️ Backup to Dropbox and Google Drive - Record your life secrets in my diary and save them right into a digital diary for eternity. Export the daily journal to TXT or include a photo journal and save them to PDF. Restore your daily diary with a lock in a few clicks on any Android device.

🏆 Achievements - By writing 15 notes you will become a Scribe. Using 6 different emojis will make you Emoticonist. Create notes with 3 or more photos in my diary journal and you are a Paparazzi.

🔔 Reminder - We will send you a gentle and friendly reminder to stay consistent with writing journal in my dairy journal app.

📌 Other options - Motivational, inspirational, and life-changing Quillio quotes in more than 30 languages.

Whether you want to call this app a mood diary or my diary, journal with lock or simply journal app you will not be wrong.

Follow us on Instagram:
https://instagram.com/quilliodiaryapp/
Use My Secret Diary with fingerprint lock as daily journal app and photo journal
Updated on
12 Aug 2026

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.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

32.5K reviews
Alexandra Hindley
21 January 2021
Love this app. I have had many diaries downloaded over the years. But when I found this one I deleted all my others and stuck with this ever since. Even when I changed phones I had saved my data and updated it on my new phones. Wouldn't swap it for any other. Really happy with it. Plus you don't have to write in it every day you write in it when you want without missed spaces for the days you didn't write an entry.
49 people found this review helpful
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Ascendik
22 January 2021
Hello! Thank you so much for the feedback, we really appreciate it. 💞 Best regards, Ascendik team
Mook Comp
10 June 2020
Solid app, with a one time upgrade fee, unlike so many others that ask for a monthly subscription. Stylish look, basic but complete functions. Ability to backup to drivebox, but no link to backup to Google drive or export to csv, which would have been nice. It would be nice to have an option to display the full entry on the main page and the calendar page without having to click into the individual entries. Bloody lovely though. Keep it up!
46 people found this review helpful
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A Google user
30 January 2022
After a month of use, Quillio has transformed the way I document my information. So far it has given me the confidence to further invest the vast amount of time I will spend on it. The feature which I found inconvenient is the selection of gallery images to be attached to the diary entry, as your image selection page doesn't allow for me to search into alternative directories, this makes things awkward. I can't find way which enables me to attach captions to the loaded images. Thanks.
31 people found this review helpful
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What's new

Thank you for using Diary.

We regularly release updates to the app, which include great new features, as well as improvements for speed and reliability.