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How the index is measured
How much does 1 GB of prepaid travel data really cost in each country? Everything here is transparent by design, so anyone can check our work.
How each number is built
Three steps, run automatically every day.
STEP 1
Collect prices daily
Every day our internal price-tracking tool pulls local, prepaid eSIM plans for each country from the leading eSIM providers.
STEP 2
Keep only real brands
We curate to recognised brands — Airalo, Nomad, Saily, Ubigi, aloSIM, GigSky and more — and drop unlimited and 200GB+ bundles.
STEP 3
Take the median $/GB
The median resists outliers, so a single overpriced plan or promo cannot distort what travelers actually pay per GB.
The fine print
- Daily-capacity plans (e.g. "2 GB/day for 10 days") are normalized to total data (20 GB) before computing $/GB.
- Regional and global bundles that happen to cover a country are excluded — only country-local plans count (V1).
- Prices are taken in USD; EUR-only prices are converted at a fixed rate, reviewed monthly.
- A country is only ranked (and included in the global index) when it has at least 5 plans from at least 3 different providers in the curated brand set — so a single provider can never skew a country's rank.
- Quarterly awards rank countries by their average median price over the quarter, using the same eligibility thresholds.
Frequently asked questions
For each country, the index is the median price per gigabyte (in USD) across all local, non-unlimited prepaid eSIM data plans, computed over a curated set of the leading eSIM providers (Airalo, Nomad, Saily, Ubigi, aloSIM, GigSky, Yesim, BNESIM and other recognised brands). Simsima, a marketplace, is excluded from this median and shown separately as its own sale price.
Plan prices are collected daily by our own price-tracking system, which aggregates the public offers of the leading eSIM providers worldwide. Prices are captured in USD; EUR-only prices are converted at a fixed monthly rate.
The median is robust to outliers: a single overpriced 100GB plan or an aggressive promo does not distort the picture of what travelers actually pay per GB.
Simsima is a marketplace, not one of the underlying providers whose catalogues make up the index. Including it would double-count the same plans it resells. Instead, Simsima's own sale price is shown separately for comparison against the independent median.
Every day. Price changes are also recorded plan by plan, which is what powers the trend charts and the "biggest movers" ranking.
Yes. The dataset is published under CC BY 4.0: you can reuse it freely (including commercially) as long as you credit "Simsima eSIM Price Index" with a link to https://simsima.io/en/esim-price-index.