Lifecraft supports different journal Heading styles (see Format Text):

By default, journal entries start with regular Body text. But you can make it so a Heading style is automatically applied to the first line of text in a journal entry. As soon as you hit return, the text will revert to the Body style as shown in the above screenshot.

On your iPhone, iPad

1. Open the App Settings.
2. Select Text.
3. Select the item with the heading JOURNAL ENTRY STARTS WITH.
4. Choose a Heading style or Body.

On your Mac

1. Open the Preferences window.
2. Select the Text preferences.
3. Select Journal entry start with menu.
4. Choose a Heading style or Body.

Entry List

If you change the "Journal entry starts with" setting to a Heading, the Entry List view will display the first line of text in bold: