AmpMe, the app that allows users to play music in perfect sync across multiple devices to create one powerful sound system, has launched “Offline Mode,” enabling users to create a party regardless of Internet connectivity. The free iOS app — available at the Apple App Store ( — also now incorporates a new predictive sync and auto-join feature to get the party started faster and easier.

Offline Mode works by creating a personal hotspot on the host phone that establishes a unique Wi-Fi network for the party that nearby AmpMe users can then join. Offline Mode plays any song stored on the host’s device via AmpMe’s “My Library” tab, streaming their personal music library in perfect sync with friends.

Those wishing to join the party simply join the Wi-Fi network, open the app and automatically join the party created by the host phone. This new “auto-join” feature makes it easy to sync unlimited phones.

AmpMe also now allows phones to sync quickly and automatically with new “Predictive Sync” technology. Predictive Sync was created using machine learning to analyze thousands of devices and hardware configurations. Based on those results, AmpMe is able to predict the “music offset” of each device and can now be in sync 95% of the time, skipping the original, manual syncing process via audio fingerprint. This means proximity to the host and background noise will no longer inhibit AmpMe users from joining the party.