Let a #topic gather the moments that belong together.
Topics turn words already inside your entries into a private way to navigate recurring people, places, projects, and seasons.
Updated October 19, 2026
How do Topics work in DiaryThreads?
Add a #topic to a published entry, reply, quote, paragraph, or to-do. DiaryThreads derives the topic locally, keeps it private, and links it to the contributing entries. Everyone can create, open, and search topics. Free users see their two most active topics; Premium unlocks the complete topic library and activity views.
- Source
- Published entry, reply, quote, paragraph, and to-do text
- Processing
- Derived on device; no public account or social graph
- Topic marker
- # or full-width ＃ followed by letters, numbers, combining marks, or underscores
- Free access
- Create topics; the collection shows the current-year top two before search
- Premium
- Every topic in the collection and complete activity insights
- Platforms
- iPhone, iPad, and Mac
Write naturally, organize automatically
A topic begins with # inside the text you were already writing. Compatible spelling variants are grouped without exposing the topic outside your private diary.
Drafts and quoted preview snapshots stay outside topic totals. Every published occurrence remains traceable to its entry.
Move from a name to its history
The collection ranks topics within the current natural year. Open a topic for its customizable 4:3 banner, all-history Entries view, or Day heatmap spanning its earliest year through the current year. A topic can prefill a new entry or Article.
On iPhone and iPad, topic cards can also reflect the State of Mind values explicitly attached to their contributing entries; body text is never used to invent emotion data. Mac shows custom banners and a neutral fallback without HealthKit palettes.
A useful free layer, a complete Premium view
Everyone can write topics and use completion. Ordinary entry text and entry count are unlimited for every purchase state.
The collection applies its current-year top-two free gate before search. Premium reveals all topics. Free banner selection and the full-history detail keep the current topic experience consistent.
Questions about this topic
Are Topics public hashtags?
No. Topics are derived and stored within your private DiaryThreads data. There is no public profile, follower graph, or discovery network.
Can free users add topics?
Yes. Everyone can write, open, and search topics. Free users see their two top-ranked topic cards; Premium unlocks the complete library.
Can I customize a topic banner?
Yes. Banner selection is free on iPhone, iPad, and Mac. You can crop a chosen image, replace it, or restore the default. Eligible banner data follows Premium private iCloud sync.