diff --git a/README.md b/README.md
index b2da3e2..80e34ab 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,13 @@
 # goTweetsAnalyze
-twitter analyzer written in Go lang
+twitter analyzer written in Go lang, insipired on the Python tweets_analyzer by x0rz https://github.com/x0rz/tweets_analyzer
 
+[under development]
+
+#### Current analysis
+- word count
+- weekly activity distribution
+- daily activity distribution
+- devices used
 
 ![Alt text](https://raw.githubusercontent.com/arnaucode/goTweetsAnalyze/master/screen3.png "screen")
 
@@ -24,4 +31,4 @@ to run it:
 ```
 ./goTweetsAnalyze
 ```
-- follow the instructions
+- follow the instructions that appears on the terminal
diff --git a/analyzeSource.go b/analyzeSource.go
new file mode 100644
index 0000000..d65bb47
--- /dev/null
+++ b/analyzeSource.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/dghubble/go-twitter/twitter"
+)
+
+func analyzeSource(tweets []twitter.Tweet) map[string]int {
+	var sources = make(map[string]int)
+	for _, v := range tweets {
+		source := strings.Split(strings.Split(v.Source, ">")[1], "<")[0]
+		if _, ok := sources[source]; ok {
+			sources[source] = sources[source] + 1
+		} else {
+			sources[source] = 1
+		}
+	}
+	return (sources)
+}
diff --git a/build/goTweetsAnalyze b/build/goTweetsAnalyze
index 96cb71c..0a655b0 100755
Binary files a/build/goTweetsAnalyze and b/build/goTweetsAnalyze differ
diff --git a/getUser.go b/getUser.go
index c695067..9b721af 100644
--- a/getUser.go
+++ b/getUser.go
@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"strconv"
 	"strings"
 
 	"github.com/dghubble/go-twitter/twitter"
@@ -18,6 +19,7 @@ func getUser(client *twitter.Client) {
 
 	fmt.Println("-----------------------")
 
+	//get tweets and analyze words and dates
 	tweets, _, _ := client.Timelines.UserTimeline(&twitter.UserTimelineParams{
 		ScreenName: username,
 		Count:      200,
@@ -27,6 +29,13 @@ func getUser(client *twitter.Client) {
 	analyzeWords(tweets)
 
 	analyzeDates(tweets)
+	fmt.Println("")
+	fmt.Println("Devices:")
+	sources := analyzeSource(tweets)
+	for k, v := range sources {
+		fmt.Print(k + ": ")
+		fmt.Println(strconv.Itoa(v) + "tw	")
+	}
 
 	fmt.Println(" ")
 	fmt.Print("first tweet analyzed: ")
diff --git a/main.go b/main.go
index 7e5dabd..2fe9047 100644
--- a/main.go
+++ b/main.go
@@ -11,7 +11,7 @@ const minNumWords = 3
 
 func main() {
 	fmt.Println("---------------")
-	fmt.Println("goTweetsAnalyze initialized")
+	fmt.Println("mgoTweetsAnalyze initialized")
 	fmt.Println("Reading twitterConfig.json file")
 	client := readConfigTokensAndConnect()
 
diff --git a/screen1.png b/screen1.png
deleted file mode 100644
index 9f9d157..0000000
Binary files a/screen1.png and /dev/null differ