> For a complete page index, fetch https://docs.synthflow.ai/llms.txt. For full documentation content, fetch https://docs.synthflow.ai/llms-full.txt.

# New Synthflow app migration

> What changes when you switch to the new Synthflow app at app.synthflow.ai, which pages still run on fine-tuner.ai, and why custom domains are unaffected.

![The new Synthflow app at app.synthflow.ai](https://storage.googleapis.com/granular-changelog/doc-gifs/appsynthflowai_compressed.gif)

The new Synthflow app is a rebuilt version of the dashboard that runs at `app.synthflow.ai` instead of `fine-tuner.ai`. It is the same product with the same data behind it, so your agents, calls, and settings are exactly where you left them. The main difference you will notice is speed: pages load faster and navigation is more responsive.

For now, only the main part of the app has moved. Authentication and the admin pages still run on `fine-tuner.ai`, so you will see both domains while the migration is in progress.

The new app is opt-in today. You turn it on yourself from [Early Access](/early-access), and you can turn it back off at any time. There is no cutover date, and nothing changes for your workspace until you enable it.

More of the app moves over as the work continues, so this page is updated along with it. Check back if something looks different from what is described here.

## Turn on the new app

Open **Settings** from the main sidebar. Under **Workspace Settings**, click **Early Access**.

Turn on the toggle for the new Synthflow app.

Your workspace opens at `app.synthflow.ai` from that point on. Update any bookmarks that still point at `fine-tuner.ai`.

To go back to the old app, turn the same toggle off from **Early Access**.

Early Access features always apply only to the master workspace, not subaccounts. If you do not see **Early Access** under **Workspace Settings**, contact your workspace admin or Synthflow support.

## What changes

* **Your workspace URL.** The main part of the app, where you build agents and review calls, is served from `app.synthflow.ai` rather than `fine-tuner.ai`.
* **Page loading.** The new app loads pages faster and responds more quickly as you move between sections.

## What stays the same

* **Your data.** [Agents](/create-an-agent), prompts, [actions](/actions-overview), [knowledge bases](/knowledge-base), [phone numbers](/phone-numbers), [contacts](/import-contacts-from-csv), and [call logs](/logs) are unchanged. The new app reads the same workspace.
* **The API.** [Platform API](/api-reference) endpoints and your [API keys](/authentication) are not tied to the dashboard domain, so integrations, webhooks, and scripts keep working without changes.
* **Team access.** [Team members](/user-management), roles, and [permissions](/manage-subaccount-permissions) carry over as they are.
* **Billing.** Your plan, [usage](/usage), and [billing](/billing) records are the same in both apps.

## Custom domains

Workspaces on a [custom domain](/custom-domain) are not affected by this move. Your whitelabel app keeps serving from your own domain, and you and your subaccounts keep signing in there exactly as before.

You do not need to change DNS records, reconnect the domain, or update your [site metadata](/custom-domain#update-site-metadata). The change from `fine-tuner.ai` to `app.synthflow.ai` applies to the Synthflow-hosted app only.

## Pages that still run on the old domain

Two parts of the product have not been rebuilt in the new app yet and still run on `fine-tuner.ai`:

* **Authentication.** Signing in still happens on `fine-tuner.ai/auth`.
* **Admin pages.** [Workspace Settings](/agency-whitelabel-dashboard#workspace-settings), [Personal](/agency-whitelabel-dashboard#personal) preferences, and [subaccounts](/create-a-subaccount) open in a new browser tab on `fine-tuner.ai` when you click them from the new app.

Everything in those pages works the way it always has. This is temporary, and they move into the new app as the migration continues.

## Known issues

**Switching between workspaces in different data regions can sign you out.** If you have two workspaces on the new app that live in different [data regions](/customer-region), switching from one to the other can leave your session unauthenticated, which leads to errors using the app.

Sign in again to restore your session. Workspaces that share the same data region are not affected.

## FAQ

#### Do I have to switch, and can I switch back?

The new app is opt-in through [Early Access](/early-access) and there is no cutover date, so your workspace stays on `fine-tuner.ai` until you turn it on. Turn the same toggle off to return to the old app at any time.

#### Does this break my API integrations or webhooks?

No. The [Platform API](/api-reference) and your [API keys](/authentication) are independent of the dashboard domain. Nothing needs to be re-pointed at `app.synthflow.ai`.

#### Why do I still see fine-tuner.ai after turning the new app on?

Only the main part of the app has moved to `app.synthflow.ai` so far. [Authentication and the admin pages](#pages-that-still-run-on-the-old-domain) have not been rebuilt yet, so they still run on `fine-tuner.ai` and open in a separate tab. They behave the same as before and move over as the migration continues.

#### Do my subaccounts switch over with me?

No. While the new app is in [Early Access](/early-access), it applies to the master workspace only, so enabling it does not move your subaccounts. They switch over once the new app is generally available.