CustomBubbleDataEntry.java

private class CustomBubbleDataEntry extends DataEntry {
    CustomBubbleDataEntry(Integer x, Integer value, Integer signal, String name, String deviceType, String mac) {
      setValue("x", x);
      setValue("value", value);
      setValue("signal", signal);
      setValue("name", name);
      setValue("deviceType", deviceType);
      setValue("mac", mac);
    }

    CustomBubbleDataEntry(Integer index, Integer x, Integer value, Integer signal, String name, String deviceType, String mac) {
      setValue("index", index);
      setValue("x", x);
      setValue("value", value);
      setValue("signal", signal);
      setValue("name", name);
      setValue("deviceType", deviceType);
      setValue("mac", mac);
    }
}

PolarActivity.java

AnyChartView anyChartView = findViewById(R.id.any_chart_view);

Polar chart = AnyChart.polar();

List<DataEntry> data = new ArrayList<>();
data.add(new CustomBubbleDataEntry(0, 0, 0, "WiFi hotspot", "wifi", "BF-AD-3A-36-A4-BE"));
data.add(new CustomBubbleDataEntry(1, 0,  2, -8, "iPhone X", "phone", "D6-18-CD-D4-DE-D2"));
data.add(new CustomBubbleDataEntry(2, 90, 4, -35, "Samsung s8", "phone", "03-ED-5C-E2-76-F4"));
data.add(new CustomBubbleDataEntry(3, 50, 4, -47, "Oneplus3T", "phone", "49-5C-D8-54-5A-5B"));
data.add(new CustomBubbleDataEntry(4, 120, 8,-72, "Nokia 6", "phone", "C5-F4-29-05-67-0D"));
data.add(new CustomBubbleDataEntry(5,170, 2, -12, "Samsung Note9", "phone", "91-72-36-E5-C1-0C"));
data.add(new CustomBubbleDataEntry(6, 200, 4, -37, "iPhone XS", "phone", "F5-C3-0F-2B-C8-AE"));
data.add(new CustomBubbleDataEntry(7, 210, 2, -20, "Dell XPS", "laptop", "44-99-CF-1E-61-CD"));
data.add(new CustomBubbleDataEntry(8, 300, 4, -42, "Apple MBP", "laptop", "2A-76-AC-F0-52-89"));
data.add(new CustomBubbleDataEntry(9, 100, 2, -25, "Lenovo Tab3", "tablet", "6B-CC-F8-E8-21-6C"));

Marker series = chart.marker(data);

series.type(MarkerType.CIRCLE);
String placeImages = "function placeImages() {" +
        "            var src;" +
        "            if (this.getData('deviceType') === 'phone')" +
        "                src = 'https://image.flaticon.com/icons/svg/65/65680.svg';" +
        "            if (this.getData('deviceType') === 'laptop')" +
        "                src = 'https://image.flaticon.com/icons/png/128/59/59505.png';" +
        "            if (this.getData('deviceType') === 'tablet')" +
        "                src = 'https://cdn2.iconfinder.com/data/icons/font-awesome/1792/tablet-128.png';" +
        "            if (this.getData('deviceType') === 'wifi')" +
        "                src = 'https://image.flaticon.com/icons/png/128/34/34143.png';" +
        "            return {" +
        "                    src: src," +
        "                    mode: 'fit'," +
        "                    opacity: 1" +
        "      }" +
        "        }";
series.normal().fill(placeImages);
series.normal().size(15).stroke(null);
series.hovered().size(17);
series.selected().size(17);
series.selected().fill(placeImages).stroke("3 #0f4b86");
series.labels(true);
series.labels()
        .anchor(Anchor.CENTER)
        .offsetY(-2)
        .fontSize(12)
        .fontColor("white")
        .format("function() { return this.getData('index'); }");

chart.yGrid(0).palette("[['#70e952 0.8', '#61da44 0.8'], ['#6cd053 0.8', '#39d811 0.8'], ['#46978d 0.8', '#05bda5 0.8'], ['#274553 0.8', '#01638f 0.8'], ['#28323c 0.8', '#596985 0.8']]");
chart.yGrid(0).stroke("6 black");
chart.xGrid(false);
chart.xScale().maximum(360);
chart.yScale()
        .maximum(9)
        .minimum(0);
((Linear) chart.yScale(Linear.class)).ticks("[0, 1, 3, 5, 7, 9]");
chart.xAxis(false);
chart.yAxis(false);
chart.yAxis().stroke(null);
chart.background("#1f2429");

chart.tooltip().format("Singnal strenthg: {%signal} dB\\nMAC address: {%mac}");
chart.tooltip().titleFormat("{%name}");

anyChartView.setChart(chart);