This contribution is related with a previous one writted in french (All you need to know about SBD). In this contribution, I described what is debt ratio and how SBD is created.
After that, I looked (unsuccessfully) for a tool to track the evolution of the following metrics :

• SBD Supply;
• STEEM Supply;
• SBD Print Rate;
• Debt / ownership ratio

STEEM Supply is an app that display easily all this metrics. As a witness, I hope it will help us understand the trends and have a better monetary policy.

Features

Despite of my search, I couldn't find a way to retrieve past supply data (steemSQL, steemData, SBDS). if anybody, has an idea about collecting previous data...

The app displays the following four charts :

Plus, you can download the database as a json plain text file by clicking on the "download database" link. This file can used if you want to fork or host the app. You need to copy the json file in data/ folder.

How it works

This tool use the following stack :

• Steem Data : Steem JS
• Back end : NodeJS
• Store : JFS
• Server : NodeJS/Express
• UI : Chart.js

about

• App : http://steem-supply-steem-supply.193b.starter-ca-central-1.openshiftapps.com/
• Repo : https://github.com/evildido/steem-supply/
• License : MIT