Observer
2 websites

Observer is free to use

http://observerapp.com/

Observer is a web analytic tool developed by Ludwig Pettersson. Observer also includes a toolbar that lets you view your analytics no matter what site you are on.

VS

Uptrends
6 websites

Uptrends offers both free and paid options

http://www.uptrends.com/

Uptrends hosted website, server and transaction monitoring services. Receive alerts. Maximize uptime. Free 4 week trial.

Market Share by Top Websites

2 In terms of market share, Observer is clearly lagging behind, losing to Uptrends in all segments.

Websites Categories

1 Uptrends has better usage coverage in more websites categories. Including Games and Health.

2 Observer is leading in Computers Electronics & Technology.

Geography

1 Uptrends is leading in most countries, including Indonesia and Netherlands.

2 Observer is leading in Russia.