We are looking for feedback about our startup http://is2monitor.com - this is web site monitoring service.
We know there are many similar solutions but our service is simple that's why not expensive and has satellite iPhone application.
Future development plans include Android application and some specific offers for blog owners and hosting companies. Do you think it may be interesting for someone?
First of all, good job on the application. It is simple, but has many features. The iPhone application is also very useful.
There is one problem, like you mentioned in your submission, you have many competitors. I would try and find a strong competitive advantage to attract users to your site instead of going to Pingdom or UptimeRobot.
Your site is inexpensive, but people can always go to a free alternative such as UptimeRobot.
The larger companies would rather pay more money to use a more trustworthy application with a large portfolio of clients (ie Pingdom).
I would also work on the landing page for the website. A more attractive interface could also help users trust the application. Create a separate "Pricing" page with an attractive comparison table. Remove the pricing on the home page and show some screen shots or some of the main features. The call to action button could also include "Sign up for your free account" and underneath you could specify that no payment is needed to sign up.
I would also place more emphasis on the iPhone application. It shows that your application is innovative.
If you need any help, let me know. I would be glad to give you a hand.
Good luck!