It seems like you might be asking about "Solo VPN APK." However, I should clarify that not all VPNs are available as APK files. APKs are specific to each application and are not universally available for all VPNs. If you're looking for a VPN application, it's important to check the official app stores for an APK file. Some popular VPNs that have APKs include OpenVPN, VPNx, and Netnix VPN. You can download these from their respective app stores. For more information, you can visit their official websites or app stores. Please note that some VPNs may require a subscription or payment to use, so be sure to check the terms and conditions before downloading.