Rafter Help

Armchair Engineering · Utilities

4.5 214 ratings $1.99

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What changed · US

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Sep 9, 2026
Rating ★ 4.5 → 4.51

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No in-app purchases.

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About

Rafter Help is the easiest way to calculate rafter length and associated values when building! Quickly find roof pitch, rafter lengths and ridge height for gable roofs, based on room and ridge width.  Or calculate length values with more control from the Advanced tab. Features Include: - Accurately solve rafter equations - Enter pitch steepness in radians, decimal degrees or degrees, minutes, seconds (DMS) or rise/run (e.g. 8/12) - Enter lengths in mm, cm, inches or feet - Select your preferred number of decimal places

What's new · 1.5.2

- Fixed floating keyboard bug, present on some devices running iOS 13

Details

ReleasedJun 2015
UpdatedNov 2019
Version1.5.2
Size5.8 MB
RequiresiOS 10.0 or later
Age rating4+
LanguagesEnglish
Price$1.99
Categories UtilitiesProductivity
Bundle IDcom.davidcaddy.rafterhelp