Side by side

AWS Network Synthetic Monitor vs EAS Observe

Both stand on mobile app monitoring. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

AWS Network Synthetic Monitor

Paid APIWeb

AWS Network Synthetic Monitor focuses on continuous visibility and pinpointing degradation across AWS and on-premises paths. Its managed probes and CloudWatch integration reduce setup work, while the lack of automatic failover means it monitors problems rather than correcting them.

Visit AWS Network Synthetic Monitor

EAS Observe

Free plan AndroidiPhoneWeb

EAS Observe focuses on performance timing and release comparisons for Expo apps. Check the SDK, build, and usage requirements before choosing a plan.

Visit EAS Observe

The facts

	AWS Network Synthetic Monitor	EAS Observe
Free plan	No	Yes
Open source	Not published	Not published
Runs on	API, Web	Android, iPhone, Web
Lowest paid plan	Pay as you go: $0.10 a month	Starter: $19 a month
Plans published	1	4
Maker	Not published	Not published
Website	docs.aws.amazon.com	expo.dev
On mobile app monitoring	#22 of 25	#8 of 25

AWS Network Synthetic Monitor: what it does well

Continuously measures packet loss and latency
AWS manages monitoring probes
CloudWatch dashboards, thresholds, and alarms
Supports IPv4 and IPv6 destinations
Private connectivity through AWS PrivateLink

What to know first

No free plan
No automatic network failover
Up to four probes per subnet resource
CloudWatch metrics are charged separately

EAS Observe: what it does well

Tracks launch, render, and interaction timings
Compares metrics across app versions and OTA updates
Custom events can be analyzed with performance data
Free plan includes 100K events per month

What to know first

Requires Expo SDK 55 or later
Not available in Expo Go
Error and crash reporting are preview features
Starter plan has additional usage costs

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