diff --git a/Data/Digit.hs b/Data/Digit.hs
--- a/Data/Digit.hs
+++ b/Data/Digit.hs
@@ -14,6 +14,17 @@
 , d7
 , d8
 , d9
+-- * Decisions
+, is0
+, is1
+, is2
+, is3
+, is4
+, is5
+, is6
+, is7
+, is8
+, is9
 -- * Deconstructors
 , foldDigit
 , if0
@@ -275,6 +286,76 @@
   t
 if9 _ f _ =
   f
+
+-- | Returns whether or not the digit is 0.
+is0 ::
+  Digit
+  -> Bool
+is0 =
+  if0 True False
+
+-- | Returns whether or not the digit is 1.
+is1 ::
+  Digit
+  -> Bool
+is1 =
+  if1 True False
+
+-- | Returns whether or not the digit is 2.
+is2 ::
+  Digit
+  -> Bool
+is2 =
+  if2 True False
+
+-- | Returns whether or not the digit is 3.
+is3 ::
+  Digit
+  -> Bool
+is3 =
+  if3 True False
+
+-- | Returns whether or not the digit is 4.
+is4 ::
+  Digit
+  -> Bool
+is4 =
+  if4 True False
+
+-- | Returns whether or not the digit is 5.
+is5 ::
+  Digit
+  -> Bool
+is5 =
+  if5 True False
+
+-- | Returns whether or not the digit is 6.
+is6 ::
+  Digit
+  -> Bool
+is6 =
+  if6 True False
+
+-- | Returns whether or not the digit is 7.
+is7 ::
+  Digit
+  -> Bool
+is7 =
+  if7 True False
+
+-- | Returns whether or not the digit is 8.
+is8 ::
+  Digit
+  -> Bool
+is8 =
+  if8 True False
+
+-- | Returns whether or not the digit is 9.
+is9 ::
+  Digit
+  -> Bool
+is9 =
+  if9 True False
 
 -- | Return the first argument if even, otherwise the second argument.
 ifEven ::
diff --git a/Digit.cabal b/Digit.cabal
--- a/Digit.cabal
+++ b/Digit.cabal
@@ -1,5 +1,5 @@
 Name:               Digit
-Version:            0.0.1
+Version:            0.0.2
 License:            BSD3
 License-File:       LICENSE
 Author:             Tony Morris <ʇǝu˙sıɹɹoɯʇ@ןןǝʞsɐɥ>