Acrobits

Internet calling gets more complicated when it needs to work across different devices and phone systems, and Acrobits builds software for that job. Its best-known offerings include the Groundwire and Softphone apps, which let users make calls through SIP-based internet telephony accounts rather than relying only on a mobile carrier’s voice service. That makes the company’s tools relevant to people who already use business VoIP or want to manage internet-phone accounts from a phone. By our assessment, the appeal is control over SIP calling in a familiar mobile-app format, including support for multiple accounts and call-handling features. The trade-off is that an app cannot provide a phone service on its own: users need a compatible SIP provider and must configure the account correctly. This is more specialised than a mainstream messaging app, and it is not the simplest choice for someone who only wants ordinary carrier calls. Account setup and provider compatibility shape the experience.