Create Sync Bundle
Codex Sync creates a `.codexsync` bundle from the local Codex records on your current Mac.
Local Codex transfer for Apple Silicon Macs
Move your local Codex conversations between Macs.
Codex Sync packages your local Codex conversations, titles, project records, and indexes into an AirDrop-friendly sync file so you can continue your Codex work on another Mac.
- No account
- No login or registration.
- No cloud upload
- Built for local files and AirDrop.
- Mac native
- For Apple Silicon Macs.
The pain point
Codex work can feel locked to one Mac.
If you use Codex on multiple Macs, your valuable local context can become fragmented: past conversations, titles, project records, and local indexes may live on the machine where the work started.
Codex Sync is built for that specific workflow: moving local Codex records from one Mac to another without setting up an account, exposing files to a cloud service, or manually digging through hidden data folders.
How it works
Export, AirDrop, import, continue.
Send with AirDrop
Transfer the sync bundle to your other Mac using Apple's built-in AirDrop workflow.
Import Received Bundle
Open Codex Sync on the second Mac, choose the received file, and import the records locally.
Reopen Codex
Quit and reopen Codex so the imported conversations, titles, and project records can appear.
What it syncs
Focused on the Codex records that matter.
Codex conversations
Move local conversation history so earlier Codex work can be available on another Mac.
Conversation titles
Preserve the titles and indexes that help you recognize sessions after migration.
Project records
Transfer project-related Codex records that help connect work back to its context.
Local indexes and state
Package related local metadata that Codex uses to organize and read existing records.
Codex Sync does not sync arbitrary local documents, generated files, source repositories, or other outputs created during Codex sessions.
Privacy first
No account. No registration. No cloud upload.
Local-first workflow
The app works with files on your Mac and creates a local sync bundle for transfer.
AirDrop-friendly transfer
Send the bundle directly between your own Macs using AirDrop instead of a third-party storage account.
You control the file
A `.codexsync` bundle can contain personal Codex conversations. Only send it to devices you trust.
Built for Mac users
A small native utility for people who use Codex across Macs.
- Works on macOS with Apple Silicon Macs such as M1, M2, M3, and M4.
- Designed for developers, indie makers, and AI coding users with more than one Mac.
- Uses a simple installer package and a focused app interface.
- Includes Chinese and English app language options.
Conflict handling
Preserve local work when records differ.
Identical files are skipped
If a record already matches, Codex Sync avoids unnecessary replacement.
Different files are preserved
When content differs, the local original is kept and conflicting content is saved as a backup.
Important records are merged where possible
Title indexes, project records, and state data are handled so Codex can recognize imported records.
Installation notes
A few Mac details before you import.
Codex Sync is distributed as a macOS installer package. Because it is a small independent utility, macOS may ask you to approve it from System Settings before first launch.
Recommended flow: quit Codex before importing, import the received `.codexsync` file, then reopen Codex to check conversations, titles, and project records.
FAQ
Answers for Codex users searching for a local sync fix.
How do I sync Codex data between two Macs?
Use Codex Sync to create a `.codexsync` bundle on the first Mac, send it with AirDrop, then import it on the second Mac. Quit Codex before import and reopen it afterward.
Can I migrate Codex conversations, titles, and project records?
Yes. Codex Sync is focused on local Codex conversations, conversation titles, project records, indexes, and related state records.
Does this back up or upload my Codex conversations?
It creates a local sync bundle that you control. Codex Sync does not require login, registration, or cloud upload.
Is Codex Sync for Windows?
No. The current version is for macOS on Apple Silicon Macs, including M1, M2, M3, and M4.
Does it sync files generated by Codex?
No. Codex Sync is for Codex records and related local metadata. It does not sync arbitrary documents, repositories, or generated output files.
What should I do if imported records do not appear immediately?
Fully quit Codex and open it again. Codex may need a fresh launch to read imported local records.
Ready to move your Codex work?
Keep your local Codex context available across Macs.
Codex Sync is for Mac users who want a simple local transfer path for Codex conversations, titles, project records, and indexes.
Buy Codex Sync