Zfone vs Otro

Make voice and video calls, send messages, and stay connected with the Zfone Softphone App. A powerful and feature-rich free SIP softphone designed for all your calling needs, offering exceptional audio quality and seamless communication. It includes call forwarding, call transfer, free calls between app users, and call hold, ensuring you stay connected and in control. With customizable settings and push notifications, the app delivers a personalized experience.

Otro is a real second phone number for calls and texts, right on your iPhone. Choose a number in the country you need and start using it in minutes. No new SIM, no second device. Unlimited calls and texting are included in your plan. Calling and texting other countries is billed from your credit balance, and purchased credits never expire. Share your Otro number freely. Your real number stays private, always. Built for anyone who needs a second line: work calls kept separate from personal ones, a temporary number for marketplace sales or short-term rentals, or a private number for online accounts and dating apps. Sign in with Apple to secure your account and recover it on any device. Manage your subscription, top up credits, and check your rates from Settings. Subscriptions auto-renew until canceled and can be managed anytime in your iOS Settings. Otro's calls are audio-only over the internet and do not support emergency calls to 911, 112, or other local emergency numbers. Use your carrier's Phone app for emergencies. https://getotro.app/terms/