afonsomota/flutter_concrete

flutter_concrete is a classic 'glue code' project that bridges a high-performance library (Zama's TFHE-rs) to a popular cross-platform framework (Flutter). Its defensibility is currently minimal (Score: 2) because it functions as a thin wrapper around existing deep-tech primitives developed by Zama. With only 1 star and no forks, it represents an early-stage experiment rather than a community-backed infrastructure project. The primary value lies in the developer's effort to manage the Rust-to-Dart FFI bindings, which can be complex to configure correctly for mobile architectures (ARM/Android/iOS). However, this 'moat' is easily crossed by anyone with FFI experience or by Zama themselves should they release an official Flutter plugin. Frontier labs like OpenAI are unlikely to compete here as this is a niche privacy-infrastructure play, but the project faces significant risk from platform holders like Google (who might integrate FHE primitives into the Android/Flutter core) or specialized cryptography startups that could offer more robust, audited, and feature-complete SDKs. The 1-2 year displacement horizon reflects the time it would take for more mature mobile FHE implementations to emerge or for Zama to prioritize the Flutter ecosystem.