The verdict
Arlo takes it, 4–2 on rounds.
Arlo edges this one on price, contract freedom, and ecosystem breadth, but ADT remains the only one of the two selling a genuinely complete monitored alarm system.
Choose ADT if…
- • You want a full whole-home alarm system with monitoring included by default
- • You need smoke, CO, flood, or smart-lock hardware in one integrated system
Choose Arlo if…
- • You want flexible wire-free AI cameras with no contract
- • Your household runs Apple HomeKit alongside Alexa or Google
Round by round
- Round 1Cost — Equipment & Monthly FeeArlo winsADT5/10
$49.99-$82/mo
Pro Install monitoring; cheaper Blu DIY tier from $9.99/mo
- 0% financing up to 60 months
- Pro Install equipment runs up to $1,449
Source: ADT pricing data
Arlo7/10$17.99-$24.99/mo
Secure Plus/Premium tiers, undercuts ADT's Pro Install floor
- Cheap entry cameras from $39.99
- 24/7 monitoring tier cheaper than ADT Pro Install
- Pro/Ultra models plus required SmartHub adds real cost
Source: Arlo pricing data
Arlo's entry hardware and its top monitoring tier both undercut ADT's Pro Install pricing.
- Round 2Contract & CancellationArlo winsADT4/10
36 months
Early termination fee, buyout-based
- Blu DIY tier offers a month-to-month path
- 36-month ETF on default Pro Install
- Reports of billing continuing after cancellation
Source: ADT contract terms
Arlo9/10No contract
Cameras owned outright, no early-termination fee
- No contract on hardware or subscription
- No prorated refund if cancelling mid-annual-term
Source: Arlo cancellation policy
Arlo is structurally contract-free; ADT's default path locks you in for three years.
- Round 3Monitoring & ResponseADT winsADT7/10
10-15 sec avg
Professional monitoring included by default on Pro Install
- 24/7 professional monitoring standard, not optional
- Published average response time
- Some sources cite response up to ~45s
Source: ADT monitoring data
Arlo4/10Premium tier only
Lower tiers are self-monitoring/push-alerts only, no published response time
- e911 emergency calling included on Premium
- 24/7 monitoring gated to the priciest tier
- No published average response-time benchmark
Source: Arlo monitoring data
ADT bakes monitoring in by default with a published response time; Arlo reserves it for the priciest tier with no published benchmark.
- Round 4Equipment & Device LineupADT winsADT8/10
Full whole-home lineup
Locks, smoke/CO, flood/freeze, glass-break, cameras, doorbell
- Smoke, CO, and flood/freeze sensors included
- Yale smart lock integration
Source: ADT device data
Arlo6/101080p-4K camera range
Strong AI person/vehicle/package/animal detection, no alarm sensors
- Strong AI person/vehicle/package/animal detection
- Wide 1080p-4K camera and floodlight range
- No door/window, smoke, CO, or flood sensors
- No smart lock anywhere in the lineup
Source: Arlo device data
Arlo's cameras and AI detection are excellent; ADT is the only one of the two selling a full alarm system.
- Round 5Smart Home IntegrationArlo winsADT6/10
Google co-developed
Deep Nest/Assistant integration; no Apple HomeKit
- Co-developed Self Setup platform with Google
- No native Apple HomeKit support
Source: ADT smart-home data
Arlo8/103 ecosystems supported
Covers Alexa, Google Assistant, and Apple HomeKit
- Only one of the two with native Apple HomeKit support
- Covers all three major smart-home ecosystems
Source: Arlo smart-home data
ADT goes deep on Google; Arlo covers Alexa, Google, and HomeKit all at once.
- Round 6Trust & ComplaintsArlo winsADT3/10
1.2/5 Trustpilot, 5,000+ reviews
- BBB accredited since 2013
- 1.2/5 Trustpilot from 5,000+ reviews
Arlo4/101.5/5 PissedConsumer, support gated by subscription
- Live support gated behind an active paid subscription
- 1.5/5 on PissedConsumer, negative BBB sentiment
Both scores are bad, but Arlo's is technically the less-bad of the two on a like-for-like scale.
Which one is for you?
Homeowner who wants a full whole-home alarm system
→ ADT · Locks, smoke/CO, and flood sensors — hardware Arlo doesn't sell at all
Buyer who wants monitoring included by default, not opt-in
→ ADT · ADT's Pro Install bundles 24/7 monitoring standard
Apple HomeKit household wanting flexible AI cameras
→ Arlo · Arlo is the only one of the two with native HomeKit support
Buyer who wants zero contract and cheap entry hardware
→ Arlo · No contract anywhere, cameras from $39.99
ADTSide by side
- 0% financing up to 60 months
- Cheaper Blu DIY tier available
- Blu DIY tier offers a month-to-month path
- Real technician handles placement and setup
- No financing contract — cameras purchased outright
- No contract, cancel subscription anytime
- No credit check or financing required
- Wide range of camera resolutions and form factors
- Pro Install monitoring starts at $49.99/mo
- 36-month ETF on Pro Install
- Service calls can run up to $160
- Requires scheduling and waiting for an appointment
- Core cloud storage and AI features gated behind a subscription
- SmartHub required for Pro/Ultra models adds $99.99-$149.99
- Annual-plan cancellations aren't prorated
- Cancelling strips cloud storage and AI detection immediately