Zai
A moment for yourself.
Zai brings together a personal journal, mood check-ins and on-device conversations for everyday reflection.
Zai is being prepared for release. This page describes its local-only functionality, not earlier cloud-based versions.
Privacy
Your information stays in the app
This policy describes Zai’s local-only functionality. Zai does not create an account, send your journal, check-ins or conversations to a developer server, or include advertising, tracking or analytics services.
What is stored
Your iPhone stores conversation text and dates, journal titles and entries, emotions, intensity ratings and optional notes. Language and voice preferences are stored in the app’s local settings. The app does not save microphone audio recordings.
How intelligence and voice work
Conversations use Apple’s on-device language model. Only a short recent conversation excerpt is provided to that model; your journal and check-ins are not included. Dictation requires microphone and speech permission and runs only when on-device recognition is available. Spoken responses use a device voice. There is no server fallback in Zai.
Availability and downloads
Conversations require iOS 26 or later, a compatible device, Apple Intelligence enabled and a supported language with the model ready. Apple may require an internet connection to download system models or voices. Journal and check-ins remain available when intelligence is unavailable. Apple’s system services and device settings are governed separately by Apple.
Retention and deletion
Records remain on this device until you delete them. Use Settings → Delete all local data to erase conversations, journal entries and check-ins. This does not reset language and voice preferences. The record database is excluded from device backups and does not sync with iCloud. Deleting the app permanently removes its local records; Zai cannot restore them. Do not delete the app as a troubleshooting step if you want to keep your records.
External links and this website
Opening the optional helpline link leaves Zai for a third-party website with its own privacy practices. Zai does not attach your entries or conversations to that link. This website is hosted by Vercel. Opening a page sends standard request information, such as an IP address and browser information, to the hosting service to deliver and secure the site. This site adds no analytics, cookies, scripts or third-party fonts. Hosting-provider practices apply separately.
Previous versions
These statements apply to the local-only functionality described here. They do not confirm deletion of any information you may have sent through a previous version or another service. Local deletion does not delete records held by a separate service.
Privacy contact
Website operator: Alejandro Hernandez Mitre. For privacy requests or app support, use the contact links below. Please do not send journal content, private conversations or recordings. If your request concerns an earlier version, mention that version without including sensitive content.
Support
Conversations are unavailable
Check the availability message in Zai. On a supported iPhone, enable Apple Intelligence in system Settings and allow its model preparation to finish. If the selected language is unsupported, choose another supported language in Zai. You can still use the journal and mood check-ins.
Dictation or spoken replies
Allow microphone and speech access in iPhone Settings. If local dictation is unavailable, type your message. In Zai Settings, enable Read responses aloud and choose an installed device voice. Downloading extra voices is managed by iOS.
Local storage will not open
Unlock your iPhone and restart Zai. Do not delete the app to fix this: the record database has no backup or recovery service.
Human support
Website operator: Alejandro Hernandez Mitre. For privacy requests or app support, use the contact links below. Please do not send journal content, private conversations or recordings. If your request concerns an earlier version, mention that version without including sensitive content.
When you need urgent help
Zai is for everyday reflection, not diagnosis, treatment or emergency care. AI can be wrong or inappropriate. If you are in immediate danger, contact local emergency services and someone you trust. Zai cannot contact help for you.