Download the language-app price dataset

What the files contain

/language-app-prices.csv holds one row per app per published plan: app, plan name, tier, billing period, term in months, price, the highest price for a range (price_high), the regular price when the plan was on sale (regular_price), currency, price per month, what the plan covers, whether the price was published, the source URL and the check date (the observed_at column).

Prices are what the vendor was charging a US visitor on the check date, sale prices included. When a plan was on sale, regular_price holds the regular price shown beside it; otherwise it is null.

/language-app-courses.csv is the course map: one row per course an app sells in one language, with the course's name and variety, the CEFR range or the maker's own levels, its size and, where the language has its own script, what the course teaches of it. Each fact has its own source column, and observed_at is the day the course was read. An empty cell means the maker doesn't state it.

/api/v1/latest.json holds the price CSV's plan rows plus the app records: languages offered, free tier, platforms, offline mode, speech recognition, live tutoring, placement test, refund or trial policy, company, country and founding year, and the affiliate programme facts. The unversioned alias /api/latest.json always points at the current major version.

/api/v1/health.json reports the dataset's generated date and whether it is current or stale against the ninety-day read window. Check it before treating a saved copy as current. /openapi.json describes these routes.

Open the CSV download or versioned JSON data. Check the data freshness status before reuse; the OpenAPI description documents the routes.

Licence

The prices, feature facts and language lists are facts taken from the apps' public pages and are not owned by this site; you may reuse them freely. The compilation, the normalised fields such as price per month, the check-date provenance and the scores are released under the Creative Commons Attribution 4.0 licence (CC BY 4.0): reuse, redistribute and build on them, with attribution.

The written comparison pages, verdicts and guides remain the copyright of the operator and are not covered by the data licence.

How to cite

Name the site, the figure's check date, and the page or file it came from, for example: "Babbel 12-month plan, $8.95 per month at annual billing, checked 2026-09-06, whichlanguageapp.com/language-app-prices.csv". A link to the page is appreciated but not required.

Because every row carries its own check date, quote that date rather than the day you downloaded the file: the two can differ by weeks.

API terms

The JSON and CSV are static files served from a cache. There is no key, no rate limit and no usage tracking beyond ordinary server logs; an optional ?client= query parameter lets a polite consumer identify itself in those logs. Please cache responses for at least an hour; the underlying data changes at most a few times a month.

The v1 shape will not change in a breaking way. Fields may be added. A v2 would ship at /api/v2/ with at least ninety days of overlap, announced on this page.

Contact

Questions about the data, requests for a field that is not published, and corrections go to [email protected]. Include the app, the field and a link to the app's page that shows the correct value; corrections are applied with a new check date.