CalcioCalc

What it does

CalcioCalc is a free calculator hub covering AI cost estimation, startup metrics (CAC, LTV, MRR, burn rate), marketing (ROAS, CPC, CPA), and personal finance (EMI, SIP, compound interest). Every calculator includes a plain-English explanation of the formula, a worked example, and common mistakes to avoid — not just a bare input box. We also publish deeper guides behind the numbers. No signup, no paywall — just fast, clear answers for founders, marketers, and anyone doing quick math.

• 
  Growth Calculators2023 · ▲201

  20+ free calculators for marketers & startups

• 
  FinanceOS with AI Financial Projections2023 · ▲215

  The finance Spreadsheet killer, 20x faster, built in Notion

• 
  Calca2014 · ▲87

  Symbolic calculator

• 
  FinanceCalc Hub25d ago · finance.webtools3.com · ▲3

  Free Online Financial Calculators

• 
  HubCalc7d ago · hub-calc.pages.dev · ▲1

  Fast, clean, and free online productivity calculators

• 
  FinCalcHub Marketing5d ago · fincalchub.xyz · ▲1

  Free financial calculators for ROI, SIP, tax & more

• 
  PaymentKit▲466

  Billing that survives a processor shutdown

  Commerce · 13d ago · paymentkit.com

• 
  Equitybee Benchmark▲241

  Compare your startup equity grant for free.

  Commerce · 26d ago · equitybee.com

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 10d ago · louisabraham.github.io

• 
  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

• 
  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

• 
  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026

• 
  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 16d ago · simedw.com