
WhisperLink Voice
Communication Audio iOS Productivity Social
What it does
WhisperLink is an iOS app built for real world noisy environments like cafés, bars, concerts, airports and crowded streets. Instead of trying to fight background noise, it lets two people hear each other directly through headphones with very low latency audio. It also includes a local Bluetooth/WiFi mode for nearby communication without internet, plus a simple nearby emergency mesh chat feature.
Does a similar job
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Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
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