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Spare Diary — Writing in your spare moments completes your day.

Your diary is saved only on your phone. It is not uploaded to a server, and you do not need to create an account.

How did Park Ji-won write the Jehol Diary?

During his journey to the Qing Dynasty, he recorded what he saw and felt on the spot—on horseback, in lodgings, in markets. Thanks to this, the Jehol Diary captivates readers with its vivid sense of immediacy even 200 years later.

If he had waited until he returned from his trip to write it all at once, would such a vivid record have remained?

Our daily lives are no different. Sit down in the evening and reflect on your day. The taste of the coffee you drank in the morning, the conversations you had at lunch, the sunset you saw on your way home from work—most of these memories have faded into hazy blurs.

However, things change if you write just one line at that moment. Short notes gather to form a daily diary, and as those days accumulate, your own Jehol Diary is completed. When you open the "View Daily" feature in the evening, you can experience the joy of seeing the short writings you jotted down in your spare moments come together to form one long story.

Spare-by-Spare Diary — Writing in your spare moments completes your day. I have been writing a diary this way for over 10 years. It doesn't have to be elaborate, and it is okay if you don't write every day. Just jotting down notes in your spare moments is enough.

I created this app by capturing that experience exactly as it is. The developer uses it personally every day to identify inconveniences and continuously improves it.

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Key Features

Recording in Your Spare Moments

Before you forget as soon as you turn around, take notes on this very moment in your spare time and save up to two photos. You can take photos directly with the camera or select from your album. If you write down "what you ate" and "tags" separately, searching for "what did I eat back then?" later becomes much easier. You can also freely change the date and time to record past moments. Touching a photo allows you to view it in full screen, and you can save it directly to your gallery.

Money Spent (Household Account Book)

You can record the money spent at that moment while writing your diary. If you write a category (e.g., Food, Transportation, Shopping) along with the item name and amount, the category you've already written will auto-complete, speeding up your next input. Today's total and the total from the 1st of this month to today are visible at a glance on the calendar screen. Opening "Details" allows you to switch between date and category to view all items. Tapping an item takes you directly to the corresponding entry. It also shows whether you spent more or less compared to the same period last month, allowing you to quickly check your spending habits for the month. Organize your expenses easily with your diary, without the need for a separate budgeting app.

Daily Collection

Gather your scattered diary entries into a single screen to complete the story of your day. Try adding a title that summarizes your day in a single phrase (the phrase you wrote is also displayed in the weekly calendar view). You can also edit each memo immediately by tapping it.

Photo of the Day and Time-lapse

Capture a photo that symbolizes your day. You can add photos by taking a picture with the camera (switchable between front and rear) or selecting from an album from the cards at the bottom of the collection, and you can also add photos one by one for past dates. You can select a desired timeframe in Settings → Photo of the Day Time-lapse to combine your collected "Photos of the Day" into 0.2-second GIF videos for sharing and saving (no separate permissions required).

Calendar

You can check the days you wrote a diary at a glance. A blue circle is displayed on days with entries, and you can tap the date to view the day's records immediately. You can switch between monthly and weekly views; in weekly view, the "Message of the Day" and scheduled notifications are displayed together in a single line. If you keep a household budget, today's total and this month's cumulative total are also displayed right below the calendar.

Weekly Review

Every Monday, you look back on the past week on a single screen. It gathers the diary entries, scheduled events, and money spent for the week at a glance, and also shows you how much has changed compared to the previous week. You can also continue writing today's diary right there. This small habit of organizing the week makes the next week clearer.

Notifications

"Appointment at 11 AM tomorrow," "Meeting next Tuesday" — Write a short line to your future self and set a time to receive a push notification at that specific moment. You can repeat notifications daily, weekly, monthly, or annually, and set an end date or an unlimited duration. Missed notifications are grouped together when you open the app, allowing you to organize them by opening them one by one.

Search

"What did I eat back then?", "When was that appointment?" — Enter a word you remember to instantly find related diary entries. You can also filter by "Eating Only / Tags Only / Household Account Only" to view only the records you want.

Backup and Restore

Keep your precious diary safe. Select a desired period to export as a Word file or back up your entire data. You can easily restore your data from backup files even if you change phones or reinstall the app. Save it wherever you prefer, such as Google Drive or email.

Save Daily Diary Instantly

You can instantly save today's diary as a Word file from the Daily Roundup. Store it conveniently in Google Drive.

D-Day

Check at a glance how many days are left until your important day. If you register important dates such as trips, exams, or anniversaries, a countdown like "Travel D-30" will appear every time you write a diary entry. You can register up to two entries.

App Lock

Keep your stories you don't want anyone to see safe in Tteumteum Diary. It is protected by a password, and on iOS, you can also use Face ID. Even if the app locks while you are writing or editing, the previous state is preserved once you unlock it.

Use with peace of mind

We do not collect any personal information, and all diary entries are stored only on your device. No separate registration or login is required. You can also check your storage space in Settings.

Start the habit of writing diary entries in your spare time by installing Tteumteum Diary and starting today.