Manyverse might be good for that. It's P2P social networking that syncs whenever you've got internet.
The entire suite of simple mobile apps is also really good, the Notes app in particular seems useful.
Organic Maps or OsmAnd will let you download maps offline and navigate with just GPS.
Aard 2 will let you browse an entire dump of Wikipedia and Wiktionary.
To my knowledge, Ada doesn't have an equivalent to Rust's borrow checker. I also think I covered that base by specifying "mainstream" 😀
This would tie in nicely to existing library systems. As a plus, if your account ever gets stolen or if you're old and don't understand this whole technology thing, you can talk to a real person. Like the concept of web of trust.
One big reason Nim never really caught on is because we've got lots of fast-ish languages with garbage collection (like Go, which sucks a lot of oxygen away from Nim IMO). Rust introduced a new concept to the mainstream that lets you program safely without a runtime hit for garbage collection.
Faster, Pussycat! Kill! Kill!
Within a few minutes of watching it I knew it was going to be awesomely bad, and it lived up to my expectations
And yet countries, given free choice, came running to NATO. Curious 🤔
Shattered Pixel Dungeon is a great time killer. There's a Lemmy community over at !pixeldungeon@lemmy.world