8 Android Diary Apps You Can Lock Like A Real Diary

By | March 8, 2022

Want to keep a Diary on your phone, but want to make sure it’s private? You can safely lock all these Android Diary apps.

Keeping a Diary helps you stay in charge, and a Diary on your smartphone is much easier to keep all the time if you need it randomly throughout the day.

As you write down your thoughts each day, it helps to reflect on the positives as well to help fight those negative thoughts. And even if you’re generally a positive person, keeping a Diary can still help you learn a lot about yourself and start new healthy habits!

Here are the best personal Diary apps for Android.

my diary

My Diary has a clean interface that is easy to navigate. It has several free themes that you can switch to, or even more themes if you upgrade to a paid plan.

For each Diary entry, you can add a mood, picture, sticker, or change the background. You can also customize the font you use as well as its size and color. There are many ways to make this Diary your own and encourage you to write in it every day.

And of course, it’s locked. You can create a custom passcode to log into your Diary or use a fingerprint lock system so you don’t have to worry about remembering passwords.

The pro version, which gives you even more awesome features and removes ads, costs $2.99/month, $15.99/year, or a one-time payment of $29.99 that gives you access forever.

Download: My Diary (Free, subscription available)

My diary

The My Diary app from Writediary.com has a much simpler interface than many other Diary apps. It’s to the point, but still stylish.

You have several color options to customize your Diary background; You can change the date style, app shortcut icon, and text style; plus, you can add emoji in the title and text of your Diary entries to help explain your day further.


DailyLife is a Diary app, but it’s also much more than that. Apart from creating Diary entries that document your feelings and the weather in the form of emojis, you can also upload photos, attach music, draw with a pen, and even export your entries to PDF.

There are several different fonts to choose from so that your Diary reflects your personality. It’s also very easy to search your Diary entries in case you want to go back and read something. You can scroll until you find what you are looking for or you can use the calendar view to easily find previous entries.

Download: DailyLife (Free, subscription available)


Daylio takes a more modern and minimalist approach to Diary. Instead of writing a lot about your day, you use icons and emojis to describe your day, track habits, and improve yourself overall. If you really want to write something down for the day, there’s a notes section in each daily entry.

Daylio is very easy to use, especially for those who find writing Diary entries a little time consuming. Using Daylio makes it easy for you to keep contemplating your day without having to put your thoughts into words if you don’t want to.

Download: Daylio (Free, subscription available)

Personal Diary

This is another great Diary app if you want something simple. There are three free color themes to choose from: white, dark gray, or pink. Dark gray is great if you’re writing Diary entries at night and want something more like dark mode.

You can lock Life with a numeric passcode, use voice input to write your Diary entries, and add photos to your entries. There is also an option to export your entries to PDF if you want a printed version.


If you want a diary that’s a little prettier and fun to look at, this one from Ascendik Niš is a great choice. You can add up to three images per Diary entry and they will be displayed behind your entry on the home screen. If you choose not to add an image, you’ll only see a regular entry with the date, title, and your first two lines of text.

Plus, you can add emoji to your entries, use voice-to-text to write, and use tags to help organize things. There are tons of free font options to choose from and you can use a PIN or fingerprint to lock your Diary.

My Dark Diary

My Dark Diary describes itself as having a vampire/dark theme. And it definitely fits that description. There are no other colors to choose from other than dark gray for the background and light gray for the Diary entries. Although there is a slight red tint to the menu options and buttons for creating new Diary entries, which complements the vampire theme.

For those who like this aesthetic, this app does it really well. No gimmicks or fancy graphics, just a clean interface ready for your Diary entries. There is a single font color and font type to choose from, so all you have to worry about is writing consistently there. You can also add emojis, photos and unique hashtags to your entries.

Download: My Dark Diary (Free, in-app purchases available)


If you are having trouble finding things to write in your Diary entries, Daybook might be the best app for you. The Daybook provides guided check-ins and guided evening reflections that can help you know what to write if you’re feeling stuck. Then, once you’ve put together a few daily check-ins and evening reflections, you can head over to the Throwback section to see them all.

Or if you know exactly what you want to write, go ahead. You can customize your font type and size as well as your theme. Then, you can set a security code for the app to keep everything private.

Another nifty feature is that you can connect Google Assistant, Amazon Alexa, or Telegram. There is a premium subscription available if you want extra features, but for those who just want the free version, you don’t even have to advertise.

Download: Daybook (Free, premium subscription available)

Monitor Yourself

Using one of these apps to keep a Diary entry, whether daily or weekly, will no doubt help improve your mental health and help you stay on top of your goals.

Keeping a diary is something most of us probably did as kids, but it grows as we get older and our schedules get busier. Being able to have a locked Diary on your phone is an easy way to make entries whenever you want and keep it safe from prying eyes.