Circular Bar Graph - ios

Question

One of the app I'm using has bar graph in circular shape. I've tried to create this by using UIBezierPath with arcCenter but I felt like this is completely wrong approach.
The code I'm currently using:
func drawGraph(){
var startDegrees = 120
for _ in 0...10{
let startAngle: CGFloat = radians(of: startDegrees)
let endAngle: CGFloat = radians(of: startDegrees + 5)
let center = CGPoint(x: bounds.midX, y: bounds.midY)
let radius = min(center.x, center.y) - trackBorderWidth / 2 - CGFloat(Int.random(in: 10...50))
let trackPath = UIBezierPath(arcCenter: center, radius: radius, startAngle: startAngle, endAngle: endAngle, clockwise: true)
trackPath.lineWidth = trackBorderWidth
trackPath.lineCapStyle = .square
trackBackgroundColor.set()
trackPath.stroke()
startDegrees += 7
}
}
Do you have better solutions or do you know any similar graph libraries like this?
EDIT:
So I've been trying to change my code little bit, I'm able to create something similar with this code:
func drawGraph(){
var temp:CGFloat = 120.0
for i in 0...64{
let startAngle: CGFloat = radians(of: temp)
let endAngle: CGFloat = radians(of: temp + 5)
let center = CGPoint(x: bounds.midX, y: bounds.midY)
let radius = min(center.x, center.y) - trackBorderWidth / 2 - 10
let randomNumber = CGFloat(Int.random(in: 10...20))
let trackPath = UIBezierPath(arcCenter: center, radius: radius + randomNumber / 2, startAngle: startAngle, endAngle: endAngle, clockwise: true)
trackPath.lineWidth = randomNumber
trackPath.lineCapStyle = .butt
UIColor.randomColor().set()
trackPath.stroke()
temp += 5.5
}
let circlePath = UIBezierPath(arcCenter: CGPoint(x: bounds.midX, y: bounds.midY), radius: 101, startAngle: CGFloat(0), endAngle:CGFloat(Double.pi * 2), clockwise: true)
let shapeLayer = CAShapeLayer()
shapeLayer.path = circlePath.cgPath
//change the fill color
shapeLayer.fillColor = UIColor.clear.cgColor
//you can change the stroke color
shapeLayer.strokeColor = UIColor.red.cgColor
//you can change the line width
shapeLayer.lineWidth = 3.0
self.layer.addSublayer(shapeLayer)
}