AI Diary

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Everyone
10+
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Everyone
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About this app

[For those who can't keep up with their diary writing]

"What should I write today...?"
"I always give up after three days..."
"When I open my diary, nothing comes to mind when I see the blank page..."

Do you have these worries?

AI Diary is a completely new interactive diary app that will change your journaling habits.

[Complete your diary naturally through conversations with AI]

With AI Diary, you don't "write" your diary; you create it as if you were "talking" to an AI assistant.

Every day, AI will gently speak to you.

"Thank you for your hard work! How was your day?"
"Was there anything you ate today that made a lasting impression?"
"Was there any news that caught your eye today?"

Simply respond naturally, as if you were talking to a friend. AI will organize the content of your conversation and automatically format it into an easy-to-read diary entry.

[Key Features]

■ AI-powered interactive diary creation
・The latest Google Gemini AI asks tailored questions.
・The first half gathers basic information through standard questions, and the second half digs deeper using context.
・After the conversation, the AI ​​automatically generates a beautiful diary entry.

■ Easy management with calendar view
・Check past entries at a glance on the home screen.
・Displays a "Done" mark and summary on days when entries were written.
・Quickly reread that day's entry with a tap.

■ Complete privacy protection
・Diary entries and images are stored exclusively on your device.
・Never sent to the cloud.
・Your precious memories are 100% private.

■ Free editing
・You can freely edit the AI-generated diary entries later.
・Add a photo for a visual record.
・Fully customize your diary to your liking.

■ Backup function
・Export entries in JSON format and save them to Google Drive or iCloud.
・Easily transfer data to other devices.
・No need to worry about losing your important entries.

■ Point System (Coming Soon)
- Earn 5 points for completing your daily diary entry
- Collect points and exchange them for gift certificates
- The more you continue, the more you save!

[Recommended for]

- People who want to keep a diary but don't know where to start
- People who started keeping a diary in the past but gave up after three days
- Busy working adults and students who don't have time to write in their diary
- People who want to record their own growth and change
- People who want to organize their thoughts and deepen their self-understanding
- People who value privacy and don't want to store their diary in the cloud

[Benefits of Using AI Diary]

■ Make diary entries a habit
The conversational format makes it fun and easy to keep up. Before you know it, you'll be able to keep it up for a month, three months, or even a year.

■ Visualize Your Growth
By rereading past diary entries, you can notice changes in your thinking and behavior. Your growth trajectory will help you gain confidence.

■ Organize Your Mind
By verbalizing the events and emotions of the day, you can clear your mind. It's also effective at reducing stress.

■ Safety and Security
Diary content is only stored locally. Your privacy is fully protected.

[Usage Scenarios]

・Morning commute: Quickly record a reflection on yesterday's events
・Lunch break: Organize the morning's events over lunch
・Evening before bed: Reflect on the day and recharge your energy for tomorrow
・Weekends: Relax and reminisce about the past week

[User Reviews]

"I enjoy talking to the AI, so I've been keeping it up every day!" (Office worker, 20s)

"I used to be bad at writing diaries, but this app seems like it'll help me." (Housewife, 30s)

"My privacy is protected, so I can write honestly and with peace of mind." (Freelancer, 40s)

[System Requirements]

・Android 5.0 (Lollipop) or later
・Internet connection required (only when creating a diary; viewing is possible offline)

[Developer's Message]

AI Diary was born from the voices of many people who wanted to write a diary but couldn't keep it up.

Journaling is a wonderful tool for deepening self-understanding and enriching your life. However, many people hit a wall: "I don't know what to write" or "I can't keep it up."

AI Diary removes those barriers. Just enjoy a conversation with AI, and your diary will naturally be completed.

Make your days more fulfilling.
Why not start a new diary habit with AI Diary?

[Download now!]

AI Diary is available for free download.
Start your diary habit today.
Updated on
Mar 7, 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.
This app may share these data types with third parties
Financial info and Device or other IDs
This app may collect these data types
Financial info and Device or other IDs
Data is encrypted in transit
Content rating
Everyone
In-App Purchases
Learn more

App support

About the developer
PROFESSIONAL EFFECT, INC
info@pro-effect.jp
2-10-1, YURAKUCHO TOKYOKOTSUKAIKAN 6F-608 CHIYODA-KU, 東京都 100-0006 Japan
+81 90-2635-4953

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