Grumpy Old Geeks Products Mastonaut Product Mastonaut 2 mentions in 1 episode Mastonaut is a Mastodon client that Jason says he bought from the App Store. Mentions 511: Amazon Baby Farms Jun 23, 2021 44:39 I picked up a copy of Mastonaut this week for $7.99 on the App Store. 44:56 Mastonaut is a Mastodon client.