In October 2021, I just tried to see how Lumosity works, but in every step, the pressure was enormous to subscribe with payment - and? Their subscription renewal is automatic! I subscribed on Oct 28,2021, paying $47.20; through - Google Play. Soon I became frustrated as it did not seem to work for the purpose it claimed to work.
Meanwhile, I saw on the Internet that Lumosity had been fined millions of dollars as its claims to enhance brain function were false, as the experimental results showed.
The games are nominal - no brainstorming as in other proven games like Sudoku and so on. The game I had tried most was about the twenty-nine train. Towards the beginning, the trains are too slow; at the end, they are extremely fast, making the game useless to brain exercising. I wrote them to adjust the trains' speeds to make the initial ones faster and the later ones slower. They said they would look through it in a reply, but they did nothing.
I don't think they would refund my one-year subscription, but I stopped the automatic renewal from being on the safe side.
From my experience, there is no reason for me to recommend this expensive app for any user.