Write
Capture daily thoughts, meaningful moments, photos, and voice notes in a calm writing space.
Keepstone: Time Capsule Diary
Seal memories for later.
A private place to write memories, seal moments, and rediscover them when the time is right. No account, no cloud sync, no social feed.
Free on the App Store. Optional one-time Supporter Pack: $0.99.
What it does
A quiet tool for personal memory keeping.
Seal
Lock memories until a future date, then rediscover them when the moment arrives.
Organize
Use tags, search, themes, typography, and journal statistics to shape your archive over time.
Export
Create password-protected .kstone files, encrypted backups, and PDF exports for unlocked memories.
The app
Built for memory, privacy, and time.
Privacy-first
Your memories should not become someone else's business model.
Keepstone is designed around private reflection and local device storage. Your data stays on your device; Keepstone does not require an account to write, seal, import, export, or read your memories.
Local-firstMemories stay on your device unless you choose export, backup, import, or sharing flows.
No accountKeepstone does not require registration, cloud sync, or a social identity to use the diary.
Supporter PackA one-time $0.99 upgrade unlocks premium themes, typography, full stats, and PDF export.
Official links
Support and policy pages for Keepstone.
Keepstone is independently developed by Pablo Silva. For help, privacy questions, or purchase issues, use the official support channel below.