Luminous Future Technology
10-Year Diary
10-Year Diary

10-Year Diary

A diary that lines up the same date across ten years

iPhone iOS 17+ iPad iPadOS 17+
On-device AI
Privacy Policy
What data this app handles
Terms of Use
Conditions for using the app
About

Overview

See last year, five years ago, ten years ago — all the same date side by side. A diary built for the long haul.

AI features

Built-in AI features

Models / Engines

  • Apple Intelligence (on-device)
  • Google Gemma 4 (on-device)
  • Shisa.AI (on-device)

Purposes

  • Summarization
  • Text generation
  • On-device AI — your inputs to the AI never leave the device
Latest Versions

Latest version

  • iPhone 1.3.7 Released: 2026-09-03 ・ Min OS: iOS 17+
  • iPad 1.3.7 Released: 2026-09-03 ・ Min OS: iPadOS 17+

App-side updated: 2026-10-09

What's New

Release notes

What's new in this version:

- Fixed issues with the Location, Camera, and Photos permission rows in Settings. The app now tells you when a request fails, and tapping while "Checking…" no longer goes unanswered or triggers duplicate requests.
- Shortened the timeout when fetching your location takes too long, and made the failure message explain what went wrong.
- Fixed AI processing (emotion analysis and AI comments) running too often while you type, making writing feel lighter. AI comments are now generated once you finish writing.
- Fixed a case where a failed emotion analysis was saved as "neutral".
- Improved AI stability and fixed other bugs.
Screenshots

10-Year Diary

Meet your past selves — the same date across ten years
Meet your past selves — the same date across ten years
Capture the whole day — photos, weather, and mood
Capture the whole day — photos, weather, and mood
See your mood and habits at a glance
See your mood and habits at a glance
Support

Support / FAQ

Frequently asked questions about 10-Year Diary, along with how to contact us.

    • iPhone: iOS 17 or later
    • iPad: iPadOS 17 or later

  • Write today's entry, and you can read it side by side with entries from the same date one, five, and ten years ago, all on one screen. Besides text, you can record photos, weather, mood, star ratings, and custom numeric status.

  • All data is stored locally on your device and encrypted on-device. It is never sent to our servers. You can protect it with Face ID / Touch ID authentication and a password lock. Note that deleting the app also deletes your data.

  • The Premium plan is an auto-renewing monthly or yearly subscription. Subscribing removes ads and unlocks 10 years of data storage (free plan: 1 year), unlimited photo attachments (free plan: up to 3), and bulk PDF export.

    • Monthly plan: ¥300/month
    • Annual plan: ¥2,400/year
    • Renews automatically unless canceled at least 24 hours before the end of the current period
    • Cancel or manage anytime from your App Store subscription settings
    • Restore Purchases is supported

  • AI features such as emotion-based auto star rating and text summarization all run on-device. Your diary content and the analysis results are never transmitted externally.

  • Yes. You can export your diary data as a PDF.

  • If the above does not resolve your issue, feel free to contact us below.

Still need help?

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