A diary for thoughts that keep growing.
DiaryThreads is proudly crafted by Jack & Sonia as a quieter way to record life on iPhone, iPad, and Mac.
Updated November 5, 2026
Why does DiaryThreads exist?
DiaryThreads began with a simple idea: recording life can feel as light as posting, while the result can remain private, local, and meaningful over time.
- Brand
- DiaryThreads
- Tagline
- Journal like you post
- Creators
- Jack Dai and Sonia
- Product
- Private, local-first diary for iPhone, iPad, and Mac
- Languages
- Nine languages in version 1.8
- Design language
- Warm paper, a living blue thread, and Apple system typography
- Status
- Available now on the App Store · Version 1.8
A familiar rhythm with a different purpose
Short entries, replies, quotes, and a single timeline make writing feel immediate. The familiar rhythm serves one person and one private archive.
There is no public performance layer. The product is shaped around remembering, continuing a thought, and noticing patterns in a life that belongs to the writer.
Crafted around clear boundaries
Version 1.8 brings People and Interactions on iPhone and iPad, native iPhone Duo navigation, app-owned media, free unlimited ordinary writing, Topics, Articles, local transcription, sharing and PDF, Recently Deleted, and optional Premium private iCloud sync. Platform-specific HealthKit and handwriting boundaries remain explicit.
Jack and Sonia use the line “Proudly Crafted by Jack & Sonia” throughout the app and website as a direct signature of the people behind the product.
Contact
Product questions, support requests, and press enquiries can be sent to jackdai20@icloud.com. Jack also shares public updates on X as @JackD2040.
The official website explains the product in detail, while the public App Store page is the source for current version, compatibility, and regional purchase information.
Questions about this topic
Who makes DiaryThreads?
DiaryThreads is proudly crafted by Jack Dai and Sonia.
Is DiaryThreads available now?
DiaryThreads 1.8 is available on iPhone, iPad, and Mac through the App Store.
How can I contact the developer?
Email jackdai20@icloud.com or follow @JackD2040 on X for public updates.