Νόμιsync Personal Accounting System Design

That's the common ground for any reasonable financial accounting: there's no reason not to use the system which worked perfectly since the XIV century.

The system uses rationals to store all the finance information: that's not a unique feature but this allows to avoid any rounding and loosing even the smallest fraction of your asset in accounting.

This is especially important when working with modern crypto-currencies which use tiny fractions as minimal values. You'll never have your gas Ethereum gas payment mismatch in the report.

Many accounting systems support multiple currencies and currency conversions, but unfortunately the implementation is not always perfect: usually the user has to choose a "base currency" and all the rest of computations is done based on it. But now in the era of travels and even some special user categories like digital nomads the multi-currency should be implemented in a way that allows switching a base currency any time.

The second point here is decentralization: crypto-currencies, international brokers, investments into assets all over the world using different ways is a usual situation, so all these assets must be handled appropriately.

There is a tagging system that allows an accounting configuration of arbitrary flexibility: bills, categories, users, comments, any marks. You define your way to go with finance.

The universal bytecode and simple API allow you to manage your finances the way you like with just a simple combination of tag and script.

Automatic categorization, automated bill payments' accounting, automated budgeting, and so on.

For running use:

cargo run -- --loglevel Debug -d 'postgres://ray@localhost/nomisynctestdb' --setopt locale=en