Stampy UK is a property tax calculator for iPhone and iPad, available from the App Store

Summary	Stampy allows you to quickly and easily calculate tax due on residential and commercial purchase and lease transactions.
Supported Taxes	England and Northern Ireland (Stamp Duty Land Tax - SDLT) Scotland (Land and Buildings Transaction Tax - LBTT) Wales (Land Transaction Tax - LTT)
Updates	StrathApps is committed to regular free updates to Stampy UK, both to keep up to date with changes to tax rates and rules, and to introduce new features. v1.1.10 was updated in December 2022, updating rates for LBTT transactions.
Price	Stampy UK is available for a £3.49 from the App Store. All updates will be released for free to existing users. One version can be used across all of your iPhones and iPads.