DailyMark

A record of thought for your future self. Irreversible, and made to last.

DailyMark is not a feed and not a blog. The words here are not meant to be shown to anyone. They hold the thought that existed only in that moment, kept for the self yet to come.

People rewrite their past. An embarrassing idea gets erased, a fragile season gets hidden, feelings get tidied, and a past that flatters the present self takes shape.

This app does not allow that.

The immaturity, the hesitation, the contradiction — each is kept as the genuine thing it was in that moment. A record cannot be changed. It cannot be deleted.

This is not a diary. It is a way to keep the traces of change.

[How a record works]

• Text only (no photo, no video, no location)
• Up to 400 characters per record
• A URL may be included (URLs do not count toward the limit)
• No editing, no deletion

[Records per day]

• Free: once a day
• Pro: five times a day (the same during the 14-day trial)

This is not a place to write a great deal. It is a place to consider what a single day is worth keeping.

[Asking your past self]

A question such as "What troubled me last month?" or "A year ago, what was on my mind?" gathers past records, and the AI returns a brief sense of the tendency and the lingering tone.

• Free: up to 3 times a month
• Pro: up to 30 times a month

[A monthly reflection (Pro)]

On Pro, the AI reads back over a past month's records and returns the recurring themes, the signs of change, and the lingering tone in a short passage.

[The color of feeling]

Each record's text is read for its emotional tendency and kept quietly on the calendar as the color of that day. The color never insists. Looking back across time, a restless season or a calm one comes through as an atmosphere rather than an explanation.

[Exporting records (Pro)]

Your own records can be exported at once in three formats — JSON, Markdown, and CSV — and saved through the share sheet (up to 3 times a month).

[Privacy]

• No ads, no third-party tracking
• Records are not used to train AI (assured by the OpenAI and Anthropic API terms)
• Each record is visible only to its author (Row Level Security)
• Deleting the account removes the data permanently (within 30 days, with no recovery)

[Requirements]

• iOS 15 or later
• iPhone only (iPad and Mac are not supported)
• Japanese and English (following the device language)

[Subscription]

• DailyMark Pro: a monthly subscription, auto-renewing (see App Store for local pricing)
• Cancellation is handled in the standard iOS Subscriptions settings
• Pro features remain available through the paid period

[Support and legal]

For questions: kokujitsuki@five-birds.com

Privacy Policy: https://five-birds.com/kokujitsuki/privacy Terms of Service: https://five-birds.com/kokujitsuki/terms Specified Commercial Transactions Act notice: https://five-birds.com/legal/tokushoho

To keep, for the future self, the feeling and the thought and the hesitation that exist only in this moment.

Not a life smoothed into order, but the process of change itself, engraved as it happens.