Koyomi - Diary with Future

Future diary becomes reality.

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

A simple and beautiful diary app that records past, present, and future in one timeline. From daily events to future dreams, capture your life on a calendar. Koyomi is a simple and beautiful diary app that lets you record past, present, and future in a single timeline. ■ Key Features 【Diary Recording】 ・Record daily events with text and photos ・Attach up to 10 photos per entry ・Create diary entries for past, today, and future ・Auto-save keeps your writing safe 【Calendar View】 ・View diary records at a glance in monthly display ・Days with entries marked with dots ・Future diary entries marked with pins ・Tap dates to view diary entries 【Timeline View】 ・Display all diary entries in reverse chronological order ・Filter by tags and goals ・Smooth scrolling for comfortable browsing ・Diary cards show photos and text at a glance 【Tag Feature】 ・Classify diary entries with tags ・Customize tags with colors ・Auto-organize by usage frequency ・Filter and search by tags 【Goal Management】 ・Set goals you want to achieve ・Link diary entries to track progress ・Set deadlines with reminders ・Manage as completed or incomplete 【Security】 ・Lock app with 4-digit PIN code ・Protect your privacy with confidence 【Full-Text Search】 ・Search across all diary entries ・Filter by tags and goals ・Specify date ranges 【iCloud Backup】 ・Automatically sync to iCloud ・Share across multiple devices ・Transfer data when changing devices 【Reminder Notifications】 ・Daily diary reminders ・Notifications for future diary dates ・Set notification time freely 【Themes】 ・Light Mode / Dark Mode ・12 color themes ・Customize accent colors ■ Perfect For ・Recording daily events ・Writing down future goals and dreams ・Preserving memories with photos ・Looking for a simple, easy-to-use diary app ・Valuing privacy ・Sharing diary across multiple devices ■ What Makes Koyomi Special ◆ Simple and Beautiful Design Intuitive operation that anyone can use easily. A design that eliminates unnecessary features and lets you focus on writing your diary. ◆ Record Past, Present, and Future Manage past memories, today's events, and future goals and plans all in one app. ◆ Privacy Protection Protect your privacy with a 4-digit PIN code to lock the app. ◆ iCloud Sync Automatically backup to iCloud. When you change iPhones, your data transfers immediately. ◆ No Ads No annoying advertisements. Write your diary comfortably. ■ How to Use 1. Select a date from Calendar or Timeline 2. Enter text and attach photos 3. Classify with tags and goals 4. Auto-save completes the process That's all it takes to keep daily records. ■ Support If you have questions or requests, please feel free to contact us from the support URL in the settings screen. Record your life with Koyomi.

Ratings & Reviews

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v1.1.0 Update [New Features] - Added Goals tab (shown when you have active goals) - Redesigned goal detail screen (remaining days, background image, related diary list) - Create diary entries directly from a goal - Diary editor automatically opens on the first launch of each day - Added summer, autumn, and winter seasonal app icons [Improvements] - Calendar now auto-scrolls to the date after editing a diary entry - Fixed app icon preview not displaying in icon settings

Version 1.1.0

The developer, Ryoma Yanagimoto, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Ryoma Yanagimoto
    Size
    • 6.2 MB
    Category
    • Lifestyle
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.2 or later.
    Languages
    English and 9 more
    • English, French, German, Indonesian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Thai
    Age Rating
    4+
    Copyright
    • © 2026 RYC
  • Privacy Policy

    • More by Ryoma Yanagimoto

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