One Line Diary is a privacy-focused journaling app for iPhone and Mac. Users can write a daily sentence, track their mood, and build a writing streak. The app stores all data locally or optionally syncs via private iCloud, with no accounts, tracking, or AI. Ideal for those wanting a simple, secure diary.
In the Habit tracking space, One Line Diary takes a focused approach. It helps users privately record daily thoughts and moods without data leaving their device. One Line Diary is a consumer product aimed at individuals seeking a private digital journal. Pricing is paid. One Line Diary is available on the web, iOS, and macOS.
Behind One Line Diary is Hitesh pankaj Nambiar, based in the United States, and it first shipped in 2026. Among its 6 catalogued features are private journaling, mood tracking, and iCloud sync.
Summary written by a language model from the project’s public pages.
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