ADT vs SimpliSafe: Pro Brand vs Contract-Free DIY
Last Updated: January 2026
ADT offers decades of experience and pro or DIY install; SimpliSafe is built on contract-free DIY with Intruder Intervention. We compare both.
Side-by-Side Comparison
| Feature | ADT | SimpliSafe |
|---|---|---|
| Installation | Professional or DIY (Self Setup) | DIY or optional pro |
| Contract | Often 2-3 years (pro); none for DIY | None |
| Monitoring | 24/7 pro, multiple tiers | Self (free) or pro |
| Equipment | Nest, ADT; financed or upfront | SimpliSafe; upfront |
| Standout | 12 centers, Nest, flexibility | Intruder Intervention, no contract |
ADT Overview
ADT is one of the largest and oldest home security brands. It offers professional and DIY installation, Nest cameras and equipment, and 24/7 monitoring from multiple centers. Pro install and financing often come with a 2-3 year contract; ADT Self Setup can avoid long-term commitment. ADT fits users who want a recognized brand, the option for expert installation, and integration with Google Nest.
SimpliSafe Overview
SimpliSafe is built on no contract and DIY. Its differentiator is Intruder Intervention: with Interactive Monitoring, agents can view your cameras and speak through them when the alarm fires. Self-monitoring is free; pro plans add 24/7 response. Equipment is bought upfront. SimpliSafe has fewer camera and smart home options than ADT but appeals to renters and anyone who wants to avoid long-term contracts.
Who Should Choose Which?
Choose ADT if you want professional installation, Nest equipment, and are comfortable with a possible contract. Choose SimpliSafe if you want no contract, self-monitoring, or Intruder Intervention, and prefer to buy equipment outright.
FAQs
- Can ADT be used without a contract?
- ADT Self Setup plans often have no long-term contract. Pro install and financing usually do.
- Does SimpliSafe have professional installation?
- SimpliSafe offers pro install through partners. It's optional; most users DIY.
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