iHeartCam Security Camera is an app that allows you to turn your old iPhone devices into a video monitoring system. It is a free app that offers a 3-day trial period, after which you can choose to continue using the app by subscribing to one of its auto-renewing plans, which include monthly, quarterly, and yearly subscriptions. With iHeartCam, you can remotely monitor your home or office by watching live streaming on your phone via 3G/4G or WiFi network from anywhere at any time.

This app has several features that make it stand out from other security camera apps. It has enhanced night vision for low-light conditions and two-way talk, which allows you to communicate with people and pets using your iPhone's built-in mic and speaker. Additionally, the app does not store any of your data, and you can use your own Cloud or Dropbox account to store private recordings. Overall, iHeartCam Security Camera is a full-featured video surveillance app that can fully serve your home monitoring needs.