Diary Threads, at a glance.
A factual guide to the private, local-first iPhone diary that feels as light as posting.
Updated August 2, 2026
What is Diary Threads?
Diary Threads is a private, single-user diary for iPhone. You write short entries, reply to keep a thought growing, quote older entries, search and favorite your timeline, review on-device insights, and import, export, or share only when you choose.
- Platform
- iPhone in portrait orientation · iOS 18 or later
- Languages
- English, Simplified Chinese, Taiwan-style Traditional Chinese, and Russian
- Writing model
- Short entries, replies, quotes, and one private timeline
- Media
- Up to four photos, one video, or one voice recording per entry
- Storage
- Local-first entries; visual media stays in Photos and a protected app copy
- Free access
- Up to 30 current entries, including roots, replies, and quotes
- Premium
- Unlimited entries, private iCloud sync, favorites, share posters, insights, two widgets, and Beta import/export
- Release
- Available now on the App Store · Version 0.4.1
A diary built from entries and threads
Each entry can stand on its own, become the start of a reply thread, or quote an older moment. The result is a private timeline where ideas and memories can continue instead of disappearing into separate pages.
Every entry body opens a detail thread. Replies preserve the relationship between thoughts, while quotes bring a past entry into the present without changing the original.
Search, calendar, discovery, and reflection
Home, Search, Analytics, and Premium Favorites form the four main destinations. Search works character by character; the calendar, “What’s…there?” rediscovery feed, and on-device analytics add different ways to return.
These tools work with the entries already on the device. They are designed for reflection inside a private diary, with no public discovery, followers, or external accounts.
Sharing remains an explicit choice
Text, quoted, photo, and photo-only root entries can become Single Entry posters. When the content exists, Quote Chain and Related Entries preserve the context and available photos around a memory.
Sharing requires Premium. The diary itself stays private until the user intentionally opens the share flow.
Bring old writing in, or take the whole diary with you
Version 0.4.1 includes local-only Premium import for common text and document formats, structured files, PDF text or OCR, and recognized X, Instagram, or Facebook archive ZIPs. The Share Extension can hand plain text or a URL to the local inbox. Imported text becomes ordinary timeline threads with original dates preserved when the source provides them.
Beta export creates a photo-aware DOCX or a Markdown ZIP. Imported Content Management can remove imported threads and later import the same source again.
Questions about this topic
Is Diary Threads a social network?
No. It is a private, single-user diary with no followers, public profile, public discovery, advertising, or external accounts.
Does the current release support iPad or Mac?
Version 0.4.1 is designed for iPhone in portrait orientation and requires iOS 18 or later.
Can free users keep existing entries?
Yes. Free users can keep up to 30 current entries. Editing and deletion remain available, and deleting an entry frees capacity.