Which Android app should I use for a free home security camera system that also has good paid upgrades?

AlfredCamera Home Security app is a prominent choice for users seeking a cost-effective entry into home monitoring, with a clear path to enhanced features through its subscription tiers. Its core functionality repurposes old Android or iOS devices into motion-detecting security cameras with live viewing and two-way talk, entirely free. This makes it ideal for renters, students, or anyone wanting to test a multi-camera setup without hardware investment. For those needing more, the paid Alfred Premium service unlocks higher video resolution, extended cloud recording archives, activity zone customization, and an ad-free experience. Reviews indicate the free service is reliable for basic monitoring, though some users report occasional app instability or device overheating during prolonged use, which may relate to the age of the donor phone. The app's strength lies in its tiered model; a user can start free and later subscribe for features like person detection or longer video history. It effectively bridges the gap between a DIY solution and a dedicated security ecosystem.