Feature idea: Choose your preferred number and currency format 🌍

[DataEnginr]

Describe the feature

I would like to suggest adding regional number formatting options for amounts in Sure.

Different countries use different conventions to group large numbers and display decimal values. A single number format may not feel natural or easy to read for every user.

For example, the same amount can be displayed in different ways:

• International format: 1,234,567.89
• Indian format: 12,34,567.89
• European format: 1.234.567,89

Why is this feature important?

These formats are more than visual preferences. People are naturally more comfortable reading numbers in the format they use in their country. For example, users in India commonly understand amounts in thousands, lakhs, and crores, while users in other regions may be more familiar with million-based grouping.

It would be useful if Sure allowed users to select their preferred number format through a simple setting, with options such as:

• International format[Default]
• Indian format
• European format

The selected format should be applied consistently across the app, including account balances, transactions, budgets, reports, and charts.

This feature would make Sure more flexible and accessible to users worldwide. It would also improve readability and reduce confusion when working with large amounts, while keeping the underlying values and calculations unchanged.

Additional context, screenshots, and relevant links

Example of the same amount in different formats:

• International: 1,234,567.89
• Indian: 12,34,567.89
• European: 1.234.567,89

A setting could allow users to select their preferred format

No screenshots are available at this time.

This feature could also be extended to exported reports and statements so that number formatting stays consistent across the app.

[jjmata]

In lib/money/formatting.rb → locale_options: we already handle commas vs. dots, spaces, and currency-symbol placement before/after the amount.

So we already support some locale-based formatting, incorrect output for a supported locale could be a bug. An independent format preference or Indian lakh/crore grouping would still be an enhancement.

Based on the app’s locale plus the currency:

• German, Spanish, Italian, Turkish, Catalan, Romanian, Portuguese (Portugal): 1.234,56 € — dots for grouping, decimal comma, symbol after.
• Polish, Norwegian Bokmål, Hungarian: 1 234,56 € — spaces for grouping, decimal comma, symbol after.
• Dutch, Portuguese (Brazil): € 1.234,56 — dots for grouping, decimal comma, symbol before.
• French: 1 234,56 € — nonbreaking spaces, decimal comma, symbol after.
• English / Irish English with EUR: comma grouping and decimal dot (1,234.56), retaining the currency’s default symbol placement.
• Other combinations: fall back to the currency’s configured separators and symbol placement.

It also handles currency-specific decimal precision and distinguishes non-US dollar symbols, such as CA$.

Not implemented by this code: Indian lakh/crore grouping (12,34,567.89) or a separate user preference that overrides the UI language.

[DataEnginr]

Agreed — the existing locale-based output is correct and should stay as the default. The request is an optional per-user override: Language (default), International, Indian, European. An explicit choice changes only grouping and separators; symbol placement and precision stay locale/currency-driven. That preserves current German/French/etc. output and adds Indian lakh/crore grouping as an opt-in.

Would you be okay if I open a PR for this @jjmata ?