mobile-ai
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The $10,000 Tennis Court Is Now a Phone
SwingVision took the machinery of elite tennis, squeezed it into one camera, and handed the argument over a line call to an iPhone. The trick was not merely teaching a phone to see. It was deciding what ordinary players would actually pay to know.
Roman Shemet Wants AI to Get Off the Cloud and Into Your Pocket
The former quant behind Cactus is treating compute like capital: spend it where it earns its keep, and let a five-year-old phone handle the rest.
Motorola Lost the Smartphone Race. Then It Learned to Sell the Fold.
The company that put a radio in the car and a phone in the hand spent years being bought, sold and outpaced. Its comeback offers a sharper lesson: heritage works only when it is attached to a product people can recognize across the room.
Cactus
Cactus is a cross-platform, open-source AI inference engine built in C/C++ to run language, speech, and vision models directly on smartphones, laptops, wearables, and other low-power edge hardware. It gives mobile developers Flutter, React Native, Kotlin, and Swift SDKs to deploy quantized models on-device - cutting latency to under 100ms, keeping data private, working offline, and avoiding cloud API bills - with automatic cloud fallback for heavier tasks. A YC Summer 2025 company, Cactus already powers production apps serving 500,000+ weekly inference tasks.