How expensive was developing Sololearn?

Question

I am not a coding professional, so I was wondering about the resource requirements to develop a rather complex application like Sololearn.

- How much time or money does it cost to develop the basic features? (Overall layout & functionality >>> lessons)
- How much to make it available on different platforms like iOS, Android, Web?
- How much to implement social features?

Would be very interesting to get some more insight into these rather economical aspects of actual programming projects.
All answers are much appreciated! :)

Cheers, Gero

Answer 1

Those estimated values are never accurate. And even less an indication for workload put into a project. The real value would be a price someone offers if he would want to buy it.

Answer 2

That’s a big difference in amounts. Around $205,000.

Answer 3

I don't know how much time the team invested in the development of the app, but here are some estimated values of the homepage (not the app)

yourwebsitevalue.com -> $97,036
https://www.yourwebsitevalue.com/site/sololearn.com.html
mysitewealth.com -> $302,204
https://mysitewealth.com/sololearn.com.html