I read 648 banks' exchange boards daily to show what they charge
Compare the exchange rate each bank actually applies — cash, transfer, card and ATM — across 600+ banks in 51 countries. Indicative rates from publicly published bank data, ranked by what you
What it does
Type an amount and compare the rate each bank actually applies — cash, transfer, card and ATM — ordered by what you'd receive. Every rate is read from the bank's own published sheet — card fees, ATM markups, cash spreads — and validated before it's shown. Our engine re-collects every business day. Each number carries its collection time, so you know exactly how fresh it is. Not affiliated with any bank. Ordering reflects the numbers alone — no bank can pay to move up. Each country pack lists its retail banks and the rate types they publish — from the US and the Eurozone to Japan, India and Brazil. You don't compare banks every day — you exchange with yours . The app remembers your banks and…from myratefx.com
Does the same job
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When I bought my home, the big bank I'd been using for years quoted me 7% APR. A local credit union was offering 5.5% for the exact same mortgage. I was surprised until I learned that mortgages are basically standardized products – the government buys almost all of them (see Bits About Money: https://www.bitsaboutmoney.com/archive/mortgages-are-a-manuf...). So what's the price difference paying for? A recent Bloomberg Odd Lots episode makes the case that it's largely advertising and marketing…
- WSWorld’s first £3 flat fee (0% FX markup) money transfer service2022 · atlantic.money · ▲182
Good morning everyone! My co-founder and I recently moved to the UK after working at Robinhood for over 5 years. We were stunned at the fees it was costing us to move money across borders with existing fintech solutions, so we decided to start Atlantic Money - the world’s first fixed fee (with no FX markup) money transfer product. For £3 you can transfer up to £1M. Let us know if you have any questions!

- HMHow much is 13B euros?2024 · howmuchis13billioneuros.com · ▲117
Hi, I made this page to contextualize 13 billion euros (or 14): an amount due to Ireland in an EU Apple tax case and all over the airwaves here this week. I use some pretty silly back-of-the-envelope type calculations (the same ones also repeated a lot in Ireland this week!). These calculations aren't especially interesting, but at least they are present: you can see them, and you can change them. If you do - change the 13 billion to 14 billion for example, related numbers will flash with updates. It's an example using calculang[1]: a language for calculations, and an example that focuses on…

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Photosynthesis fires two of your iPhone
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Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 27d ago · everycube.alen.is


Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 27d ago · baselashraf81.github.io
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
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


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 · 17d ago · simedw.com