It will ask if you want to download a 800MB package if you run the latex command so TeX is not really included in the main download.

Lua is rather tiny. JavaScript and the executor for C/C++ (as the compiler compiles to WASM) are mostly Apple frameworks (JavaScript Core). Now Python and Clang are fairly big, but not usually 650mb big, I’d say 200mb is more likely. Now if TeX was included, totally agree, but as sibling comment indicated, it’s not.

The compiler compiles to LLVM IR.

From their own website:

> clang/clang++ compiles your C/C++ files to webAssembly with wasi included. Executee the resulting files using 'wasm command'. You can also compile to webAssembly elsewhere and bring the files to your iPad.

Oh, oops, I mistook it for libterm, which has a very similar site…

I think they both share the same codebase, but not sure if there’s a relationship between the two app publishers.

The LibTerm app does that: https://libterm.app

> LLVM: You can compile C code into LLVM IR format with clang and interpret it with the lli command.

Yeah, I confused it with that. My mistake. (Someone should really tell them to not make their websites look the same!)