Does It Add Up?
All the calculators. None of the sign-up.
Does It Add Up? launched on May 7, 2026.
What it does
59 free calculators for money, health, math, and everyday life. Mortgage, BMI, TDEE, compound interest, unit converter, and more — no sign-up required.
97 free calculators for money, health, math, and everyday life. Mortgage, BMI, TDEE, compound interest, unit converter, and more — no sign-up required.
Free calculators for money, health, and everyday math — with the honest context behind thefrom doesitaddup.com
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Source: Product Hunt launch ↗
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Parallel agents, diff reviewer, and multi-model comparisons
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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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