I'm a hobbyist when it comes these kinds of things, fiddling and learning. You can see stuff I've done at nefties.com/stuff
GitHub: crrdlx | Hive: @crrdlx | Keybase: crrdlx | Telegram or Discord: @crrdlx | Blockstack: crrdlxcr
And, oh, I created LUV: LUV info, get LUV.
This was my first attempt at an open source project.
The app simply converts the current price of Grin into fiat various fiat currencies.
I also made the Satoshi Bitcoin Converter in 2013, then made it into an app for Android, then made it into a web app at SatoshiBitcoinConverter.com. I'm kind of happy that it's gotten quite a bit of use in at least 134 countries. It is available at https://play.google.com/store/apps/details?id=com.satoshi.bitcoin.converter&hl=en_US The "sales pitch" follows. There's really no sales since the app is free, actually, and has no ads. I get nothing from it except a sense of accomplisment and a few thanks, which are awesome!
The Satoshi Bitcoin Converter automatically switches units between bitcoin, mBTC, uBTC, and satoshi. A current value is displayed in major currencies. Maybe you've wondered how many u-bits are in an m-bit, or, how much bitcoin is that 15,000 satoshi? Or, what's all that worth right now anyway in fiat currency? Then this may be a useful app for you.
Note: this app is not for fiat-to-fiat conversion, like USD-to-EUR. And it is not for crypto-to-crypto conversion, like Bitcoin-to-Dash. This app is for fiat-to-crypto conversions.
Ethereum unit conversion is included: Ether, Finney, Szabo, and Gwei units.
Bitcoin Cash (BCH), Litecoin (LTC), Dash (DASH), NEO (NEO), NeoGAS (GAS), Dogecoin (DOGE), and Grin (GRIN) support have been included as well.
Supported currencies: USD, GBP, EUR, CNY, CAD, AUD, INR, JPY, KRW, and many others.
The "DMW" is a template for a simple, clean, one-page website. It fits and looks great on any browser (you're looking at it right now).
Better, the DMW can be viewed at this link: https://crrdlx.github.io/pages/dmw.html
This is a template from Yahoo! for a responsive website. It looks good on a desktop/laptop, tablet, or phone...just clean and fast and simple.
You can see a live example at my nefties.com site (it uses PureCSS): https://nefties.com