He told me he listed the app on MicroAcquire and created a one-pager with the numbers, users, cost, and revenue.
After that, he was contacted by several people directly on the platform. So he made a call with a few of them, and in the end, received 3 offers.
They did the transaction via an escrow service, and the bureaucratic process did not involve much paperwork. He only signed non-competing and asset purchase agreements.
The transition period was the most difficult part for him, as he kept the website online and onboarding the new technical team, but overall, it took less than 2 months.