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Money-saving & comparison

Compare prices, bills, salaries and subscriptions in real numbers. · 13 tools

  • Bill Detective

    Spot spikes, price changes and calculation errors across your utility bills.

    JSON API · MCP

  • Break-even Explorer

    When does an investment pay for itself? Payback, NPV and IRR for solar, EVs, heat pumps…

    JSON API · MCP

  • Bulk Buy Brain

    Is the bulk pack really cheaper once waste, storage and tied-up cash are counted?

    JSON API · MCP

  • Currency Converter

    Convert an amount into several currencies at ECB euro reference rates, with rate date and source.

    Uses live data · JSON API · MCP

  • Hidden Fee Finder

    Paste a quote, contract or invoice and see every fee, tax, penalty and add-on.

    JSON API · MCP

  • Historical FX Chart

    Chart exchange rates over time from ECB data: min, max, average, change, volatility and CSV export.

    Uses live data · JSON API · MCP

  • Inflation Time Machine

    What was money from one year worth in another? CPI-based, 20 countries, World Bank data.

    JSON API · MCP

  • Multi-Currency Invoice Calculator

    Convert invoice lines in different currencies at ECB reference rates, with VAT, rounding and totals.

    Uses live data · JSON API · MCP

  • Price Per Everything

    Compare products by price per gram, use, serving, hour or year of life.

    JSON API · MCP

  • Salary Reality Check

    Compare job offers by real net pay per hour, including commute time and living costs.

    JSON API · MCP

  • Subscription Stack

    Add up every subscription, spot overlaps and see which ones to cancel and what you save.

    JSON API · MCP

  • Travel Exchange Fee Calculator

    Compare what cards, ATMs, DCC and exchange bureaus really cost abroad vs the ECB reference rate.

    Uses live data · JSON API · MCP

  • Warranty Value Calculator

    Is the extended warranty worth it? Expected payout vs. price and break-even failure rate.

    JSON API · MCP

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