# BigMacIndex.app

> An independent Big Mac Index tracker that turns The Economist's burgernomics dataset into a daily-updated, interactive view of purchasing power parity across 54 countries (expanding to 100+).

<!-- TODO: Confirm dataset license. Provisional placeholder: CC-BY 4.0. The underlying Big Mac price data is sourced from The Economist (TheEconomist/big-mac-data on GitHub, MIT-licensed); FX rates from Tokyo FX Market. Owner: support@bigmacindex.app -->

## Core

- [Big Mac Index 2026 — Home](https://bigmacindex.app/): Interactive map, ranking table, historical trend chart, and bar chart for current Big Mac prices across 54 countries, recalculated daily against live FX.
- [About & Methodology](https://bigmacindex.app/about): What the Big Mac Index is, how PPP is calculated, data sources, update cadence, limitations, and a worked example using Japan.
- [App Store Pricing Advisor](https://bigmacindex.app/app-store-pricing-advisor): Tool for app developers — converts a USD base price into PPP-fair recommended prices per region using the Big Mac Index, with CSV export.
- [Daily Picture](https://bigmacindex.app/daily-picture): Generator for shareable Big Mac Index infographics built from the latest USD-converted prices.

## Editorial

- [Blog Index](https://bigmacindex.app/blog): All articles on Big Mac economics, currency analysis, and PPP.
- [Why Is Japan's Big Mac So Cheap? The Yen Factor Explained](https://bigmacindex.app/blog/why-japan-bigmac-cheap): Analysis of Japan's $3.15 Big Mac (46% below the US), covering yen weakness, stable domestic pricing, and what it means for travelers (2026-01-15).

## Data

- [Dataset overview](https://bigmacindex.app/about#methodology): 54 countries, base price USD $5.79, sourced from The Economist Big Mac Index (data_date 2025-01-01, snapshot updated 2026-01-30). Big Mac local prices refresh twice yearly (January, July); FX rates refresh daily ~06:00 UTC from Tokyo FX Market; USD prices recomputed daily.
- [Upstream source — TheEconomist/big-mac-data](https://github.com/TheEconomist/big-mac-data): Authoritative raw Big Mac price series maintained by The Economist.

## About the Editor

- [Author — Robert. W](https://bigmacindex.app/about): Hi, I'm Robert — an indie developer based in Australia. bigmacindex.app is a side project I started in early 2026 to make purchasing power parity less abstract: one burger, one number, every country.
- Contact: support@bigmacindex.app

## Optional

- [Privacy Policy](https://bigmacindex.app/privacy): How BigMacIndex.app handles visitor data (last updated 2026-01-21).
- [Terms of Service](https://bigmacindex.app/terms): Usage terms for the site, data, and tools (last updated 2026-01-21).