To the best of my knowledge, they only have a single web dev. That's Jason, who is also a founder. Other Sandy, also a founder, who runs operations, a bit of help from their son when he's back from college, and an ML dev, the whole team is mathematicians who are working on content.
As a customer who spent a good amount of time on the app a couple of years ago, I don't think a mobile app would be very helpful. The website is perfectly usable from an iPad, but you should have a pen and scratchpad available while working through the exercises. On an iPad, the notes app works fine for this, but a phone just isn't the right form factor IMO.
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IMO, Brilliant isn't even in the same category as Math Academy when it comes to depth and Duolingo just may be the worst learning app ever created despite the fact that it's been a great business. I used to run a language school and later worked at a language learning startup and was active in communities of language learners. While I've met many people who have used Duolingo for hours a day for a year or even multiple years, I've never met a single person who's gotten to even a B2 level through Duolingo. If you really want to learn a language, get LingQ and either read stories in it or listen to the audio versions of them at the bus stop. That will get you a lot more input / minute.
As a customer who spent a good amount of time on the app a couple of years ago, I don't think a mobile app would be very helpful. The website is perfectly usable from an iPad, but you should have a pen and scratchpad available while working through the exercises. On an iPad, the notes app works fine for this, but a phone just isn't the right form factor IMO.
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IMO, Brilliant isn't even in the same category as Math Academy when it comes to depth and Duolingo just may be the worst learning app ever created despite the fact that it's been a great business. I used to run a language school and later worked at a language learning startup and was active in communities of language learners. While I've met many people who have used Duolingo for hours a day for a year or even multiple years, I've never met a single person who's gotten to even a B2 level through Duolingo. If you really want to learn a language, get LingQ and either read stories in it or listen to the audio versions of them at the bus stop. That will get you a lot more input / minute.