diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/BloodPressureMeasurementParser.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/BloodPressureMeasurementParser.java
index a189fa55..251dcdd2 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/BloodPressureMeasurementParser.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/BloodPressureMeasurementParser.java
@@ -24,6 +24,7 @@ package no.nordicsemi.android.nrftoolbox.parser;
 import android.bluetooth.BluetoothGattCharacteristic;
 
 import java.util.Calendar;
+import java.util.Locale;
 
 public class BloodPressureMeasurementParser {
 	public static String parse(final BluetoothGattCharacteristic characteristic) {
@@ -59,7 +60,7 @@ public class BloodPressureMeasurementParser {
 			calendar.set(Calendar.MINUTE, characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 5));
 			calendar.set(Calendar.SECOND, characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 6));
 			offset += 7;
-			builder.append(String.format("\nTimestamp: %1$tT %1$te.%1$tm.%1$tY", calendar));
+			builder.append(String.format(Locale.US, "\nTimestamp: %1$tT %1$te.%1$tm.%1$tY", calendar));
 		}
 
 		// parse pulse rate if present
diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/CSCMeasurementParser.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/CSCMeasurementParser.java
index 22199f39..d0966301 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/CSCMeasurementParser.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/CSCMeasurementParser.java
@@ -23,6 +23,8 @@ package no.nordicsemi.android.nrftoolbox.parser;
 
 import android.bluetooth.BluetoothGattCharacteristic;
 
+import java.util.Locale;
+
 public class CSCMeasurementParser {
 	private static final byte WHEEL_REV_DATA_PRESENT = 0x01; // 1 bit
 	private static final byte CRANK_REV_DATA_PRESENT = 0x02; // 1 bit
@@ -57,12 +59,12 @@ public class CSCMeasurementParser {
 
 		final StringBuilder builder = new StringBuilder();
 		if (wheelRevPresent) {
-			builder.append(String.format("Wheel rev: %d,\n", wheelRevolutions));
-			builder.append(String.format("Last wheel event time: %d ms,\n", lastWheelEventTime));
+			builder.append(String.format(Locale.US, "Wheel rev: %d,\n", wheelRevolutions));
+			builder.append(String.format(Locale.US, "Last wheel event time: %d ms,\n", lastWheelEventTime));
 		}
 		if (crankRevPreset) {
-			builder.append(String.format("Crank rev: %d,\n", crankRevolutions));
-			builder.append(String.format("Last crank event time: %d ms,\n", lastCrankEventTime));
+			builder.append(String.format(Locale.US, "Crank rev: %d,\n", crankRevolutions));
+			builder.append(String.format(Locale.US, "Last crank event time: %d ms,\n", lastCrankEventTime));
 		}
 		builder.setLength(builder.length() - 2);
 		return builder.toString();
diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/HeartRateMeasurementParser.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/HeartRateMeasurementParser.java
index 313c7298..205d38a5 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/HeartRateMeasurementParser.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/HeartRateMeasurementParser.java
@@ -25,6 +25,7 @@ import android.bluetooth.BluetoothGattCharacteristic;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 
 public class HeartRateMeasurementParser {
 	private static final byte HEART_RATE_VALUE_FORMAT = 0x01; // 1 bit
@@ -101,7 +102,7 @@ public class HeartRateMeasurementParser {
 		if (rrIntervalStatus) {
 			builder.append(",\nRR Interval: ");
 			for (final Float interval : rrIntervals)
-				builder.append(String.format("%.02f ms, ", interval));
+				builder.append(String.format(Locale.US, "%.02f ms, ", interval));
 			builder.setLength(builder.length() - 2); // remove the ", " at the end
 		}
 		return builder.toString();
diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/IntermediateCuffPressureParser.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/IntermediateCuffPressureParser.java
index 0c4cd500..a2198a19 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/IntermediateCuffPressureParser.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/IntermediateCuffPressureParser.java
@@ -24,6 +24,7 @@ package no.nordicsemi.android.nrftoolbox.parser;
 import android.bluetooth.BluetoothGattCharacteristic;
 
 import java.util.Calendar;
+import java.util.Locale;
 
 public class IntermediateCuffPressureParser {
 	public static String parse(final BluetoothGattCharacteristic characteristic) {
@@ -55,7 +56,7 @@ public class IntermediateCuffPressureParser {
 			calendar.set(Calendar.MINUTE, characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 5));
 			calendar.set(Calendar.SECOND, characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, offset + 6));
 			offset += 7;
-			builder.append(String.format("\nTimestamp: %1$tT %1$te.%1$tm.%1$tY", calendar));
+			builder.append(String.format(Locale.US, "\nTimestamp: %1$tT %1$te.%1$tm.%1$tY", calendar));
 		}
 
 		// parse pulse rate if present
diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/RSCMeasurementParser.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/RSCMeasurementParser.java
index 10468439..f4bb6dcf 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/RSCMeasurementParser.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/RSCMeasurementParser.java
@@ -23,6 +23,8 @@ package no.nordicsemi.android.nrftoolbox.parser;
 
 import android.bluetooth.BluetoothGattCharacteristic;
 
+import java.util.Locale;
+
 public class RSCMeasurementParser {
 	private static final byte INSTANTANEOUS_STRIDE_LENGTH_PRESENT = 0x01; // 1 bit
 	private static final byte TOTAL_DISTANCE_PRESENT = 0x02; // 1 bit
@@ -57,11 +59,11 @@ public class RSCMeasurementParser {
 		}
 
 		final StringBuilder builder = new StringBuilder();
-		builder.append(String.format("Speed: %.2f m/s, Cadence: %d RPM,\n", instantaneousSpeed, instantaneousCadence));
+		builder.append(String.format(Locale.US, "Speed: %.2f m/s, Cadence: %d RPM,\n", instantaneousSpeed, instantaneousCadence));
 		if (islmPresent)
-			builder.append(String.format("Instantaneous Stride Length: %.2f m,\n", instantaneousStrideLength));
+			builder.append(String.format(Locale.US, "Instantaneous Stride Length: %.2f m,\n", instantaneousStrideLength));
 		if (tdPreset)
-			builder.append(String.format("Total Distance: %.1f m,\n", totalDistance));
+			builder.append(String.format(Locale.US, "Total Distance: %.1f m,\n", totalDistance));
 		if (walking)
 			builder.append("Status: WALKING");
 		else
diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/TemperatureMeasurementParser.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/TemperatureMeasurementParser.java
index 8d210b34..9ba0e5bc 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/TemperatureMeasurementParser.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/parser/TemperatureMeasurementParser.java
@@ -23,6 +23,8 @@ package no.nordicsemi.android.nrftoolbox.parser;
 
 import android.bluetooth.BluetoothGattCharacteristic;
 
+import java.util.Locale;
+
 public class TemperatureMeasurementParser {
 	private static final byte TEMPERATURE_UNIT_FLAG = 0x01; // 1 bit
 	private static final byte TIMESTAMP_FLAG = 0x02; // 1 bits
@@ -66,7 +68,7 @@ public class TemperatureMeasurementParser {
 		}
 
 		final StringBuilder builder = new StringBuilder();
-		builder.append(String.format("%.02f", tempValue));
+		builder.append(String.format(Locale.US, "%.02f", tempValue));
 
 		if (fahrenheit)
 			builder.append("°F");