Ditto, a company that primarily uses Rust for software development, faced challenges when integrating Rust with Apple's Bitcode technology for iOS applications, due to incompatibilities between the LLVM versions used by Rust and Apple's Xcode. Bitcode enables Apple to optimize apps post-development, and since some of Ditto's clients have Bitcode enabled, Ditto needed to ensure compatibility. To address this issue, Ditto created custom scripts to build a Rust toolchain that aligns with the correct LLVM version, ensuring smooth integration with iOS devices. These scripts, along with binary releases of the toolchain, are available on GitHub for public use, with Ditto encouraging contributions and bug reports to further improve the toolchain. The company is enthusiastic about Rust's growing role in mobile app development and offers resources on their platform for developers interested in leveraging Rust for building reliable and fast applications.