Deceitful unless you never intend to input inches in your combined feet, and inches calculation
Upon downloading the app to perform calculations that use combinations of feet, inches, and fractions, and denied the operation of calculation because I have to purchase the feature that permits the input of inches, was a disappointment. No, I felt that the designer hid this from interested people, and then throws the pay for the ability to use a very common function in calculating feet, inches, and fractions was detestable.
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