diff --git a/Demo/RangeSeekSliderDemo/Base.lproj/Main.storyboard b/Demo/RangeSeekSliderDemo/Base.lproj/Main.storyboard
index 7a198ac..8858595 100644
--- a/Demo/RangeSeekSliderDemo/Base.lproj/Main.storyboard
+++ b/Demo/RangeSeekSliderDemo/Base.lproj/Main.storyboard
@@ -67,7 +67,6 @@
                                             <userDefinedRuntimeAttribute type="number" keyPath="maxDistance">
                                                 <real key="value" value="80"/>
                                             </userDefinedRuntimeAttribute>
-                                            <userDefinedRuntimeAttribute type="string" keyPath="minValueString" value="Free"/>
                                         </userDefinedRuntimeAttributes>
                                     </view>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Custom Range and Image Handle:" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="AzH-aT-IDj">
@@ -128,11 +127,7 @@
                                         </userDefinedRuntimeAttributes>
                                     </view>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Hidden Labels:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="oXk-Mj-BG8">
-                                        <rect key="frame" x="16" y="484" width="207" height="21"/>
-                                        <constraints>
-                                            <constraint firstAttribute="width" constant="207" id="Sna-ai-U0a"/>
-                                            <constraint firstAttribute="height" constant="21" id="fwf-Nv-DuZ"/>
-                                        </constraints>
+                                        <rect key="frame" x="16" y="484" width="114.5" height="21"/>
                                         <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                         <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                         <nil key="highlightedColor"/>
@@ -158,8 +153,41 @@
                                             </userDefinedRuntimeAttribute>
                                         </userDefinedRuntimeAttributes>
                                     </view>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Custom Label String:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="qwj-Dy-ogm">
+                                        <rect key="frame" x="16" y="600" width="160.5" height="21"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                        <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="gdz-ut-dL8" customClass="RangeSeekSlider" customModule="RangeSeekSlider">
+                                        <rect key="frame" x="16" y="631" width="343" height="65"/>
+                                        <color key="tintColor" red="0.94509803920000002" green="0.32156862749999998" blue="0.63921568630000003" alpha="1" colorSpace="calibratedRGB"/>
+                                        <constraints>
+                                            <constraint firstAttribute="height" constant="65" id="wa9-1w-B3f"/>
+                                        </constraints>
+                                        <userDefinedRuntimeAttributes>
+                                            <userDefinedRuntimeAttribute type="number" keyPath="step">
+                                                <real key="value" value="0.0"/>
+                                            </userDefinedRuntimeAttribute>
+                                            <userDefinedRuntimeAttribute type="number" keyPath="minDistance">
+                                                <real key="value" value="1"/>
+                                            </userDefinedRuntimeAttribute>
+                                            <userDefinedRuntimeAttribute type="number" keyPath="selectedMaxValue">
+                                                <real key="value" value="67"/>
+                                            </userDefinedRuntimeAttribute>
+                                            <userDefinedRuntimeAttribute type="number" keyPath="selectedMinValue">
+                                                <real key="value" value="0.0"/>
+                                            </userDefinedRuntimeAttribute>
+                                            <userDefinedRuntimeAttribute type="number" keyPath="minValue">
+                                                <real key="value" value="0.0"/>
+                                            </userDefinedRuntimeAttribute>
+                                            <userDefinedRuntimeAttribute type="number" keyPath="maxValue">
+                                                <real key="value" value="67"/>
+                                            </userDefinedRuntimeAttribute>
+                                        </userDefinedRuntimeAttributes>
+                                    </view>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="By WorldDownTown" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="l8Q-0R-HSN">
-                                        <rect key="frame" x="230" y="600" width="128.5" height="17"/>
+                                        <rect key="frame" x="230" y="716" width="128.5" height="17"/>
                                         <fontDescription key="fontDescription" type="italicSystem" pointSize="14"/>
                                         <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                         <nil key="highlightedColor"/>
@@ -180,11 +208,14 @@
                                     <constraint firstAttribute="trailing" secondItem="Ziu-u7-MMb" secondAttribute="trailing" constant="16" id="IhU-gZ-Ury"/>
                                     <constraint firstItem="AzH-aT-IDj" firstAttribute="top" secondItem="aHO-Yd-TsS" secondAttribute="bottom" constant="20" id="Jm6-vy-cvb"/>
                                     <constraint firstItem="C9a-jS-yyk" firstAttribute="top" secondItem="wcl-zp-wAu" secondAttribute="top" constant="20" id="OPi-3h-sYH"/>
+                                    <constraint firstItem="gdz-ut-dL8" firstAttribute="top" secondItem="qwj-Dy-ogm" secondAttribute="bottom" constant="10" id="Rxx-Zc-1gn"/>
+                                    <constraint firstItem="qwj-Dy-ogm" firstAttribute="leading" secondItem="wcl-zp-wAu" secondAttribute="leading" constant="16" id="S7C-ay-c6D"/>
                                     <constraint firstItem="9hi-ch-oTe" firstAttribute="top" secondItem="oXk-Mj-BG8" secondAttribute="bottom" constant="10" id="Tzv-ph-4vH"/>
                                     <constraint firstItem="4K8-GF-10z" firstAttribute="leading" secondItem="wcl-zp-wAu" secondAttribute="leading" constant="16" id="VIk-99-ySf"/>
+                                    <constraint firstItem="gdz-ut-dL8" firstAttribute="leading" secondItem="wcl-zp-wAu" secondAttribute="leading" constant="16" id="XEq-D5-ZxF"/>
                                     <constraint firstItem="oXk-Mj-BG8" firstAttribute="top" secondItem="Ziu-u7-MMb" secondAttribute="bottom" constant="20" id="XKs-WW-biu"/>
                                     <constraint firstItem="aHO-Yd-TsS" firstAttribute="leading" secondItem="wcl-zp-wAu" secondAttribute="leading" constant="16" id="Y1X-H5-hUN"/>
-                                    <constraint firstItem="l8Q-0R-HSN" firstAttribute="top" secondItem="9hi-ch-oTe" secondAttribute="bottom" constant="20" id="Yms-sl-V3V"/>
+                                    <constraint firstAttribute="trailing" secondItem="gdz-ut-dL8" secondAttribute="trailing" constant="16" id="c1d-VF-WkS"/>
                                     <constraint firstItem="hFS-hr-Hy5" firstAttribute="top" secondItem="AzH-aT-IDj" secondAttribute="bottom" constant="10" id="eES-ut-gGD"/>
                                     <constraint firstItem="evq-sI-chw" firstAttribute="width" secondItem="wcl-zp-wAu" secondAttribute="width" constant="-32" id="esr-Wi-gO8"/>
                                     <constraint firstItem="oXk-Mj-BG8" firstAttribute="leading" secondItem="wcl-zp-wAu" secondAttribute="leading" constant="16" id="jfD-EA-Chg"/>
@@ -195,6 +226,8 @@
                                     <constraint firstAttribute="bottom" secondItem="l8Q-0R-HSN" secondAttribute="bottom" constant="20" id="sK7-od-7oN"/>
                                     <constraint firstAttribute="trailing" secondItem="l8Q-0R-HSN" secondAttribute="trailing" constant="16" id="tDo-M2-uBo"/>
                                     <constraint firstItem="AzH-aT-IDj" firstAttribute="leading" secondItem="wcl-zp-wAu" secondAttribute="leading" constant="16" id="tFx-Hv-4vR"/>
+                                    <constraint firstItem="qwj-Dy-ogm" firstAttribute="top" secondItem="9hi-ch-oTe" secondAttribute="bottom" constant="20" id="y1k-To-61Y"/>
+                                    <constraint firstItem="l8Q-0R-HSN" firstAttribute="top" secondItem="gdz-ut-dL8" secondAttribute="bottom" constant="20" id="zlo-Vh-ix6"/>
                                 </constraints>
                             </scrollView>
                         </subviews>
@@ -211,6 +244,7 @@
                         <outlet property="rangeSlider" destination="evq-sI-chw" id="k72-tE-yA5"/>
                         <outlet property="rangeSliderCurrency" destination="aHO-Yd-TsS" id="hMn-Ta-0mN"/>
                         <outlet property="rangeSliderCustom" destination="hFS-hr-Hy5" id="3wt-ag-AhN"/>
+                        <outlet property="rangeSliderCustomString" destination="gdz-ut-dL8" id="8C5-lV-cJC"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="YCF-VE-LZM" sceneMemberID="firstResponder"/>
diff --git a/Demo/RangeSeekSliderDemo/ViewController.swift b/Demo/RangeSeekSliderDemo/ViewController.swift
index 72e7af6..688abd6 100644
--- a/Demo/RangeSeekSliderDemo/ViewController.swift
+++ b/Demo/RangeSeekSliderDemo/ViewController.swift
@@ -14,6 +14,17 @@ final class ViewController: UIViewController {
     @IBOutlet fileprivate weak var rangeSlider: RangeSeekSlider!
     @IBOutlet fileprivate weak var rangeSliderCurrency: RangeSeekSlider!
     @IBOutlet fileprivate weak var rangeSliderCustom: RangeSeekSlider!
+    @IBOutlet fileprivate weak var rangeSliderCustomString: RangeSeekSlider!
+
+    fileprivate let prices: [Int] = [
+        .min, 500, 1_000, 2_000, 3_000, 4_000, 5_000, 6_000, 7_000, 8_000, 9_000,
+        10_000, 11_000, 12_000, 13_000, 14_000, 15_000, 16_000, 17_000, 18_000, 19_000,
+        20_000, 21_000, 22_000, 23_000, 24_000, 25_000, 26_000, 27_000, 28_000, 29_000,
+        30_000, 31_000, 32_000, 33_000, 34_000, 35_000, 36_000, 37_000, 38_000, 39_000,
+        40_000, 41_000, 42_000, 43_000, 44_000, 45_000, 46_000, 47_000, 48_000, 49_000,
+        50_000, 55_000, 60_000, 65_000, 70_000, 75_000, 80_000, 85_000, 90_000, 95_000,
+        100_000, 110_000, 120_000, 130_000, 140_000, 150_000, .max,
+        ]
 
     override func viewDidLoad() {
         super.viewDidLoad()
@@ -54,6 +65,25 @@ final class ViewController: UIViewController {
         rangeSliderCustom.lineHeight = 10.0
         rangeSliderCustom.numberFormatter.positivePrefix = "$"
         rangeSliderCustom.numberFormatter.positiveSuffix = "M"
+
+        // custom label string range slider
+        rangeSliderCustomString.delegate = self
+        rangeSliderCustomString.minValue = 0.0
+        rangeSliderCustomString.maxValue = CGFloat(prices.count - 1)
+        rangeSliderCustomString.selectedMinValue = 0
+        rangeSliderCustomString.selectedMaxValue = CGFloat(prices.count - 1)
+        rangeSliderCustomString.minDistance = 1.0
+    }
+
+    fileprivate func priceString(value: CGFloat) -> String {
+        let index: Int = Int(roundf(Float(value)))
+        if index == 0 {
+            return "Min"
+        } else if index == prices.count - 1 {
+            return "Max"
+        } else {
+            return "\(prices[index])"
+        }
     }
 }
 
@@ -79,4 +109,16 @@ extension ViewController: RangeSeekSliderDelegate {
     func didEndTouches(in slider: RangeSeekSlider) {
         print("did end touches")
     }
+
+    func rangeSeekSlider(_ slider: RangeSeekSlider, stringForMinValue minValue: CGFloat) -> String? {
+        guard slider == rangeSliderCustomString else { return nil }
+
+        return priceString(value: minValue)
+    }
+
+    func rangeSeekSlider(_ slider: RangeSeekSlider, stringForMaxValue maxValue: CGFloat) -> String? {
+        guard slider == rangeSliderCustomString else { return nil }
+
+        return priceString(value: maxValue)
+    }
 }
diff --git a/RangeSeekSlider.podspec b/RangeSeekSlider.podspec
index 452dd3e..1af5b2d 100644
--- a/RangeSeekSlider.podspec
+++ b/RangeSeekSlider.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name                  = 'RangeSeekSlider'
-  s.version               = '1.1.0'
+  s.version               = '1.2.0'
   s.summary               = 'RangeSeedSlider provides a customizable range slider like a UISlider.'
   s.description           = <<-DESC
                             RangeSeedSlider provides a customizable range slider like a UISlider.
diff --git a/Sources/RangeSeekSlider.swift b/Sources/RangeSeekSlider.swift
index 3fd91ed..4eacb69 100644
--- a/Sources/RangeSeekSlider.swift
+++ b/Sources/RangeSeekSlider.swift
@@ -67,12 +67,6 @@ import UIKit
         }
     }
 
-    /// String of the label when the handle is set to the minimum value.
-    @IBInspectable public var minValueString: String?
-
-    /// String of the label when the handle is set to the maximum value.
-    @IBInspectable public var maxValueString: String?
-
     /// The font of the minimum value text label. If not set, the default is system font size 12.0.
     public var minLabelFont: UIFont = UIFont.systemFont(ofSize: 12.0) {
         didSet {
@@ -525,14 +519,14 @@ import UIKit
             return
         }
 
-        if let minValueString = minValueString, selectedMinValue == minValue {
-            minLabel.string = minValueString
+        if let replacedString = delegate?.rangeSeekSlider(self, stringForMinValue: selectedMinValue) {
+            minLabel.string = replacedString
         } else {
             minLabel.string = numberFormatter.string(from: selectedMinValue as NSNumber)
         }
 
-        if let maxValueString = maxValueString, selectedMaxValue == maxValue {
-            maxLabel.string = maxValueString
+        if let replacedString = delegate?.rangeSeekSlider(self, stringForMaxValue: selectedMaxValue) {
+            maxLabel.string = replacedString
         } else {
             maxLabel.string = numberFormatter.string(from: selectedMaxValue as NSNumber)
         }
diff --git a/Sources/RangeSeekSliderDelegate.swift b/Sources/RangeSeekSliderDelegate.swift
index e0d12e3..12e981e 100644
--- a/Sources/RangeSeekSliderDelegate.swift
+++ b/Sources/RangeSeekSliderDelegate.swift
@@ -10,7 +10,7 @@ import CoreGraphics
 
 public protocol RangeSeekSliderDelegate: class {
 
-    /// Called when the RangeSlider values are changed
+    /// Called when the RangeSeekSlider values are changed
     ///
     /// - Parameters:
     ///   - slider: RangeSeekSlider
@@ -18,15 +18,31 @@ public protocol RangeSeekSliderDelegate: class {
     ///   - maxValue: maximum value
     func rangeSeekSlider(_ slider: RangeSeekSlider, didChange minValue: CGFloat, maxValue: CGFloat)
 
-    /// Called when the user has started interacting with the RangeSlider
+    /// Called when the user has started interacting with the RangeSeekSlider
     ///
     /// - Parameter slider: RangeSeekSlider
     func didStartTouches(in slider: RangeSeekSlider)
 
-    /// Called when the user has finished interacting with the RangeSlider
+    /// Called when the user has finished interacting with the RangeSeekSlider
     ///
     /// - Parameter slider: RangeSeekSlider
     func didEndTouches(in slider: RangeSeekSlider)
+
+    /// Called when the RangeSeekSlider values are changed. A return `String?` Value is displayed on the `minLabel`.
+    ///
+    /// - Parameters:
+    ///   - slider: RangeSeekSlider
+    ///   - minValue: minimum value
+    /// - Returns: String to be replaced
+    func rangeSeekSlider(_ slider: RangeSeekSlider, stringForMinValue minValue: CGFloat) -> String?
+
+    /// Called when the RangeSeekSlider values are changed. A return `String?` Value is displayed on the `maxLabel`.
+    ///
+    /// - Parameters:
+    ///   - slider: RangeSeekSlider
+    ///   - maxValue: maximum value
+    /// - Returns: String to be replaced
+    func rangeSeekSlider(_ slider: RangeSeekSlider, stringForMaxValue: CGFloat) -> String?
 }
 
 
@@ -37,4 +53,6 @@ public extension RangeSeekSliderDelegate {
     func rangeSeekSlider(_ slider: RangeSeekSlider, didChange minValue: CGFloat, maxValue: CGFloat) {}
     func didStartTouches(in slider: RangeSeekSlider) {}
     func didEndTouches(in slider: RangeSeekSlider) {}
+    func rangeSeekSlider(_ slider: RangeSeekSlider, stringForMinValue minValue: CGFloat) -> String? { return nil }
+    func rangeSeekSlider(_ slider: RangeSeekSlider, stringForMaxValue maxValue: CGFloat) -> String? { return nil }
 }