How long did your MVP take to develop?

I started the MVP of my personal project in 2020. It's still under development :D

Have built several. 2 full time weeks to get it in the user's hands, and an additional 4 weeks to something that's making revenue.

That's doing the tech stuff solo and having a partner think about all the UX and product stuff.

Working as a team takes a lot longer in my experience for some reason. Teams with a FE and BE guy end up taking around 2 months to get something into the user's hands. Outsourcing to a team could well take 4 months and man-years to pay off half the tech debt.

MVP can be as small as you want. Best thing is to just build it one feature at a time until it becomes a usable coherent product at minimum. An MVP can take as little as one day, depending on what MVP means for you.

It’s all relative and it’s important to set small achievable goals that you can increment continuously with consistent effort.

Dev API service - 50-60 hours including UI. I did that in 2019 (4 digit MRR)

Replica of the above one but lighter version 10 hrs. Built in 2020 (4 digit MRR)

Immigrants platform - around 30-40 hrs - built in 2021 (5 digit MRR) - outsourced 20%

I'm on the same boat.

I have a technical issue in my mvp that seems like an open question in my field and I don't know how to proceed.

I'm almost sending a email to my competitor to check how do they overcome it lol

It depends hugely on what you’re trying to do. It can be as little as a few days or as long as a few years.

Seven days: https://onlineornot.com/building-saas-in-one-week-how-built-...

(tl;dr: paid for Tailwind UI, paid for Divjoy, had been building React + Node apps for 5 years before using the same stack to build my own product)