Open Startup2 min read

I am building VitalFrog in an Open Startup fashion. Apart from the VitalFrog blog, milestones are shared on and on my personal Twitter @eu_frey.

Find the current website tracking information on

First user (Nov 7, 2021)

Today, the first user who is not a friend of mine signed up for the alpha version.
Nice to see the events coming in and looking forward to following up with him/her in a few days how VitalFrog works for him/her.

After building this up for a month, a nice feeling to finally get the ball rolling

Launched MVP (Nov 2, 2021)

After about two months of working on VitalFrog this is the day I finally was able to get the site live.
The product is still in alpha phase and actually the core value proposition: Email alerts are not implemented yet. But for the alerts to actually be valuable it makes sense for the customers to join anyway as in order to figure out a performance regression VitalFrog needs some historical data.

Quite proud to have this out the door, and now I have to focus on getting people on the product 😀

Came up with the idea (Sep 4, 2021)

After finish a huge frontend rework in my main job to get our core web vitals in shape, we thought that we are finally done with the project.
About a month later we saw our Google rankings dropping again and figured during product upgrades we increased the CLS again. The fix took us like 2 hours, but due to the 28 days window of the Google Data, it took us close to another month to actually recover from this drop.

Researching for monitoring options, I found different suboptimal solutions, which all were either loosing out on data or required a massive effort to actually put in place.

This is where the idea for VitalFrog came from: A simple-to-use tool that emails you alert if your web vitals get worse.