Quick take: ADT and Arlo can look similar on promo pricing, but they win for different reasons. One generally fits buyers prioritizing full alarm workflows; the other often fits camera-led DIY households focused on lower recurring costs.
At-a-glance verdict
- Choose ADT if you want a stronger all-system alarm operating model with expansion flexibility.
- Choose Arlo if your priority is cost-efficient camera coverage and modular DIY scaling.
- Best buying move: compare complete 36-month ownership before locking in.
What to compare over 36 months
- Monitoring and cloud plan totals
- Starter kit pricing vs add-on expansion costs
- Contract/cancellation risk and upgrade friction
- Alert reliability and app-day usability
Where each brand tends to win
ADT strengths
- Better fit for households that want security-system depth over pure camera-first setups.
- Can provide stronger long-run flexibility for mixed sensor + automation deployments.
Arlo strengths
- Lower-barrier camera-led expansion and straightforward DIY setup paths.
- Appeals to buyers minimizing recurring commitments.
Bottom line
Pick the operating model that matches your home. The largest cost regret usually comes from choosing the wrong service model, not from choosing the wrong first bundle.
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With over 20 years of experience evaluating home security technologies, Andrew is a trusted home security expert. He specializes in DIY home security systems, indoor and outdoor security cameras, doorbell cameras, and safety software such as password managers. Andrew uses in-depth research to provide accurate and actionable insights. His work helps you make better decisions to protect your home.

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