Firebase iOS Version breakdown

firebase-iOS-breakdown

// How to:
// 1. Go in the Firebase Analytics Dashboard
// 2. Scroll down, select `Device` under the "What is your audience like?" widget
// 3. Export the CSV data (top right of the corner, there's a `...` menu with Download CSV option)
// 4. Open the file and select the iOS breakdown raw data
// 5. Replace your data with the sample data in this script
// 6. Run the script in a Xcode Playground
// 7. See the terminal output

var data = """
ios 13.1.3,60599
ios 13.1.2,43022
ios 12.4.1,24814
ios 12.4.2,11399
ios 12.3.1,6736
ios 13.2,6170
ios 12.4,4643
ios 13.0,4474
ios 13.1.1,3476
ios 12.2,2475
ios 13.1,2263
ios 11.4.1,1906
ios 12.1.4,1498
ios 12.1.2,876
ios 12.1,668
ios 11.4,581
ios 10.3.3,532
ios 12.3.2,452
ios 12.0.1,433
ios 10.3.4,410
ios 11.3.1,385
ios 11.2.6,361
ios 12.0,348
ios 12.4.3,274
ios 11.3,256
ios 10.2.1,224
ios 11.2.1,221
ios 12.3,192
ios 11.1.2,179
ios 11.2.5,179
ios 10.3.2,158
ios 11.0.3,149
ios 12.1.3,128
ios 12.1.1,115
ios 10.1.1,105
ios 10.2,97
ios 11.2.2,90
ios 11.2,82
ios 11.0,78
ios 11.1,64
ios 11.0.2,62
ios 10.3.1,61
ios 11.1.1,54
ios 10.0.2,40
ios 11.0.1,39
ios 10.1,12
ios 10.0.1,11
ios 10.3,8
ios 10.0.3,2
ios 9.1,1
"""

let lines = data.split { $0.isNewline }

var iOSDictionary: [String: Int] = [:]

for line in lines {
    let iOSVersion: String = String(line.split(separator: ".").first!)
    let numberOfUsers = Int(line.split(separator: ",").last!)!
    iOSDictionary[iOSVersion, default: 0] += numberOfUsers
}

let totalUsers: Int = iOSDictionary.values.reduce(into: 0, { $0 += $1 })

for (iOSVersion, numberOfUsers) in iOSDictionary {
    let percent = String(format: "%.2f", Double(numberOfUsers) / Double(totalUsers) * Double(100))
    print("\(iOSVersion): \(percent)%")
}

Thank you, this has been really helpful!

Thank you for this.

iOSDictionary.sorted(by: { $0.key.localizedStandardCompare($1.key) == .orderedDescending })

Adding version sort for output would be better.

This is great! I don't know why firebase still hasn't such a breakdown..

The CSV format I get from Firebase labels the columns like this:
OS with version,Users,New users

It looks like your script is adding up the numbers in the last column (New users) like this:
let numberOfUsers = Int(line.split(separator: ",").last!)!

Should it instead add up the numbers in the second-to-last column (Users) like this?
let numberOfUsers = Int(line.split(separator: ",")[1])!

@paulhimes nice catch 👏🏻 Gist updated, thank you!