Instrumental vs Skylight: What are the differences?

What is Instrumental? Visualize any aspect of your application performance, measure production code in real-time, and share with your entire team. Instrumental is a real-time application and server monitoring platform. With over a million datapoints processed every second, we're one of the highest scale monitoring services.

What is Skylight? The smart profiler for your Rails apps. Skylight is a smart profiler for your Rails apps that visualizes request performance across all of your servers.

Instrumental and Skylight belong to "Performance Monitoring" category of the tech stack.

Some of the features offered by Instrumental are:

• Application monitoring - we accept any volume of arbitrary data, making it easy to set up graphs to measure the performance of your application in real time
• Server monitoring - Ruby apps can use our instrumental tools gem to monitor information like CPU statistics, memory usage, disk space, and all the other things you'll need to monitor your servers. Language support - Ruby is supported using a custom library, and all other languages are supported with our Statsd backend
• RESTful API - upon authentication, data is collected and returned in strict JSON format

On the other hand, Skylight provides the following key features:

• Skylight looks at how your code is behaving in production, alerting you to improvements you can make before they become showstoppers.
• Skylight tells you exactly how your app is spending its time where it matters most—in your production environment
• Pricing starts at $20 for the first million requests, with automatic discounts for high-volume customers

"Best, fastest, and easiest-to-use Interface" is the primary reason why developers consider Instrumental over the competitors, whereas "Beautiful UI" was stated as the key factor in picking Skylight.