Best No-Contract Home Security Systems of 2025

We recommend SimpliSafe, as it provides DIY monitoring, free real-time alerts, and smart home integration on month-to-month plans.

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By Aliza Vigderman Aliza Vigderman, Senior Editor, Industry Analyst & Gabe Turner Gabe Turner, Chief Editor
About our Methodology and Testing
We personally installed over 60 home security systems and tested them for over 10,000 hours in every possible scenario, including simulated break-ins. For fairness and consistency, we developed our own testing protocol, and then used it to rate all the systems we tested. In the case of our top six no-contract security systems, we looked for low-cost, high-quality options that didn’t lock us into contracts. We also looked for options that have back-up cellular connections in case our Wi-Fi fails. For more on how we test, read our complete testing methodology below.
10,000+ research hours
60+ systems tested
150+ simulated break-ins
40 systems reviewed
6 systems recommended
All of our content is written by humans, not robots. Learn More