Each VoIP user has an address or number through which the user is contacted. Apps released by VoIP services allow you to use, in most cases, the username or phone number you got when you registered with the service. There are third-party apps that are service-independent, allowing you to use them with any service. These use SIP addresses.
This article relates only to 3rd party software applications (Apps) that work with SIP services that are universally compatible. AKA - SIP-Based VoIP Apps - Session Initiation Protocol. This clearly excludes closed proprietary systems such as Skype and Google Voice. To better understand the distinction read IP Voice Communication.
Many of the free SIP apps will not operate in background or perform push notification. This results in an inability to receive incoming calls and text messages while the app is not open or has been terminated by the phone operating system to preserve battery reserve.
SIP apps on iOS and Android can perform push notifications and operate in the background without terminating. This is enabled by:
- Push Notifications: Apps use Apple's Push Notification Service (APNs) to receive incoming call alerts.
- Background Modes: VoIP apps can run in the background using the voip background mode in the app's settings.
This allows SIP apps to handle calls effectively while conserving battery life.
Bria
Monthly fee so not recommended. A one time cost is always worth considering, but reoccurring fees just to use an application are not good for the individual.
ZoIPer
- GP
- see also: ZoIPer Family of Apps
Not Recommended. Disconnects constantly. Undocumented errors. Too many versions.
ZoIPer tries to upsell yet so many versions not clear what to use.
CSipSimple
- see also: CSipSimple
no review or comment
Linphone
worked well for a few months then became unstable. crashes frequently.
SIP Droid
Works for calls, no SMS, very primitive interface however it did register to voip.ms right away and does not try to upsell.
MizuDroid
MizuDroid is an unlocked VoIP softphone for Android mobile phones and tablets based on open standards, compatible with all VoIP providers, software and devices using the SIP protocol.
The free softphone can be downloaded from Google Play Store for personal usage.
The Pro version ads more features such as G.729 and auto tunneling/encryption and it can be used also for commercial purposes or by companies.
SessionTalk SIP Softphone
Free version does not support premium features like Push Notifications, Video Calls, SMS ( SIP SIMPLE support only), Multiple SIP Accounts, Call Transfer, Dial Plan, Call Recording, G729 Audio codec
Android Sip Client
Motorola disables the dialer app so the built-in SIP client is unavailable. Other manufacturers are known to do this so don't count on using the built in Android dialer for SIP / VoIP.
Groundwire
Groundwire is highly preferred for comprehensive SIP operations including SIP voice calling, SMS, and MMS text messaging. Groundwire is praised for its robust features, seamless integration with various VoIP providers, and user-friendly interface. It supports push notifications, ensuring reliable incoming call and message alerts even when the app is running in the background. Users appreciate its ability to handle a broad range of communication needs, making it a top choice for those requiring a full-featured SIP client on their iPhone. Groundwire supports SMS but does not support MMS text messaging​. As of 2024 Groudwire is a one time cost of $10 to use.