Compare the same purchase across countries.

Period Tracker and CalendarAppManage LLC

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Cheapest observed storefront

United States$3.99

Most expensive observed storefront

United States$3.99

Save versus highest price

0%Highest-to-lowest spread 0%

Reference-rate date

Aug 22, 2026ECB + Exchange API · EUR · Checked Aug 23, 2026

Period and ovulation tracker

Ranked by converted USD value. The local App Store price remains the source value.

1 · USD

Rank	Storefront	Local price	USD equivalent	Official store	vs. baseline	Observed
#1	USUnited StatesBaseline	$3.99USDBing live conversion ↗	$3.99	App Store · US ↗	0%	Aug 18, 2026

Data and rate notes

ECB reference rates are used when available, with a broad daily currency source filling unsupported currencies. These values are informational and are not transaction quotes.

Apple's public product page may show only part of an App's complete in-app purchase catalog.

Regional Price Comparison

Period and ovulation tracker