# Synchronizing data
## ● What is Synchronization?
Pen Manager allows you to access the data you need whenever you need it. Synchronization, one of the key features of Pen Manager, allows you to keep your written and recorded data up to date across multiple computers.
Data synchronization is as simple as the following three steps.
1. [**Download Pen Manager app**](/pen-manager-support/what-is-pen-manager/how-to-install.md) to your computer.
2. Log in with the same account on each device. (※Synchronization is not provided in guest mode)
3. Click the \[🔄] Sync button in \[Settings] →'Sync'. (Manual synchronization)
* The data stored in Pen Manager is automatically synchronized in **once every 15 minutes** even without manually pressing the synchronization button.
## ● Important things to know about Synchronization
* **Type of data that can be synchronized**
1. RECO's written/recorded data
2. 'Written data' that was written while connected to Pen Manager
* **When does Pen Manager synchronize the data automatically?**
1. Everytime you run Pen Manager
2. Immediately after the RECO data transfer is completed.
3. 15 minutes after the last synchronization
* **Use the same Pen Manager account on all devices**
One account can sync data across multiple devices. To sync data, you need to log in using the same Pen Manager account on each device.
* **Synchronize data as soon as your device goes offline and back online**
If your computer isn't connected to the internet, your data won't sync to the server. However, when the device is brought back from offline to online, it will automatically receive data changes from the server. And, if you add data while offline, the data will sync to the server as soon as the device is back online. Also, don't worry if the Pen Manager shuts down during synchronization. When the Pen Manager is running again, synchronization will start from where it left off.
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