diff --git a/harbour-sailtuner.desktop b/harbour-sailtuner.desktop
new file mode 100644
index 0000000..3afc908
--- /dev/null
+++ b/harbour-sailtuner.desktop
@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Application
+Icon=harbour-sailtuner
+Exec=harbour-sailtuner
+X-Nemo-Application-Type=silica-qt5
+Name=SailTuner
+# translation example:
+# your app name in German locale (de)
+#
+# Remember to comment out the following line, if you do not want to use
+# a different app name in German locale (de).
diff --git a/harbour-sailtuner.png b/harbour-sailtuner.png
new file mode 100644
index 0000000..7ed80df
Binary files /dev/null and b/harbour-sailtuner.png differ
diff --git a/harbour-sailtuner.pro b/harbour-sailtuner.pro
new file mode 100644
index 0000000..20a1a4b
--- /dev/null
+++ b/harbour-sailtuner.pro
@@ -0,0 +1,20 @@
+QT += qml quick gui multimedia
+TARGET = harbour-sailtuner
+
+CONFIG += c++11 sailfishapp sailfishapp_i18n
+
+DEFINES += TARGET=\""$(TARGET")\"
+
+RESOURCES += \
+	qml/sailfish.qrc
+
+SOURCES += \
+	src/sailfish.cpp \
+	src/Tuner.cpp \
+	src/audio/LinearFilter.cpp \
+	src/audio/ZeroCross.cpp
+
+HEADERS += \
+	src/Tuner.hpp \
+	src/audio/LinearFilter.hpp \
+	src/audio/ZeroCross.hpp
diff --git a/qml/Sailfish.qml b/qml/Sailfish.qml
new file mode 100644
index 0000000..ba25acb
--- /dev/null
+++ b/qml/Sailfish.qml
@@ -0,0 +1,55 @@
+import QtQuick 2.0
+import Sailfish.Silica 1.0
+import harbour.sailtuner.tuner 1.0
+
+/**
+ * Sailfish main page
+ *
+ */
+
+ApplicationWindow {
+	id: app
+	allowedOrientations: Orientation.All
+
+	property bool userRunning: true
+	property int dbFontSize: 100
+	property QtObject tuner
+
+	initialPage: Component {
+		ApplicationWindow {
+			Tuner {
+				id: tunerObject
+				running: Qt.application.active && app.userRunning
+			}
+
+			property QtObject tuner: tunerObject
+
+			Text {
+				anchors.horizontalCenter: parent.horizontalCenter
+				anchors.verticalCenter: parent.verticalCenter
+				text: tuner.freq.toFixed(2) + " Hz"
+				font.pixelSize: 90
+				color: Theme.primaryColor
+			}
+
+			Component.onCompleted: {
+				app.tuner = tunerObject
+				//togglePause.connect(app.togglePause)
+			}
+		}
+	}
+
+	cover: Component {
+		CoverBackground {
+			Text {
+				color: Theme.primaryColor
+				font.pixelSize: 40
+				text: app.tuner.freq.toFixed(2) + " Hz"
+			}
+		}
+	}
+
+	function togglePause() {
+		app.userRunning = app.userRunning ? false : true
+	}
+}
diff --git a/qml/sailfish.qrc b/qml/sailfish.qrc
new file mode 100644
index 0000000..c96b56f
--- /dev/null
+++ b/qml/sailfish.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/qml/">
+<file>Sailfish.qml</file>
+</qresource>
+</RCC>
diff --git a/rpm/Makefile b/rpm/Makefile
new file mode 100644
index 0000000..722ee0d
--- /dev/null
+++ b/rpm/Makefile
@@ -0,0 +1,72 @@
+# helper to build for Sailfish with sdk engine
+
+SAILFISHOS_DIR = $(HOME)/SailfishOS
+
+SSH_KEYS_DIR = $(SAILFISHOS_DIR)/vmshare/ssh/private_keys
+SSH_KEY_ENGINE = $(SSH_KEYS_DIR)/engine/mersdk
+SSH_KEY_EMULATOR = $(SSH_KEYS_DIR)/SailfishOS_Emulator/nemo
+
+SSH_LOGIN_ENGINE = mersdk@localhost
+SSH_LOGIN_EMULATOR = nemo@localhost
+SSH_LOGIN_JOLLA = nemo@jolla
+
+HOME_ENGINE = /home/mersdk/share
+
+BUILD_DIR_LOCAL = $(HOME)/merBuild/sailtuner
+BUILD_DIR_ENGINE = $(HOME_ENGINE)/merBuild/sailtuner
+
+SOURCE_DIR_LOCAL = $(PWD)/..
+#SOURCE_DIR_ENGINE = $(subst $(HOME),$(HOME_ENGINE),$(SOURCE_DIR_LOCAL))
+SOURCE_DIR_ENGINE = /home/src1/SailTuner
+
+PRO_FILE = harbour-sailtuner.pro
+
+I486_TARGET = SailfishOS-i486
+JOLLA_TARGET = SailfishOS-armv7hl
+
+ENGINE_PORT = 2222
+EMULATOR_PORT = 2223
+
+BUILD_DIR_LOCAL_I486 = $(BUILD_DIR_LOCAL)/$(I486_TARGET)
+BUILD_DIR_LOCAL_JOLLA = $(BUILD_DIR_LOCAL)/$(JOLLA_TARGET)
+
+BUILD_DIR_ENGINE_I486 = $(BUILD_DIR_ENGINE)/$(I486_TARGET)
+BUILD_DIR_ENGINE_JOLLA = $(BUILD_DIR_ENGINE)/$(JOLLA_TARGET)
+
+SSH_ENGINE = ssh -p 2222 -i $(SSH_KEY_ENGINE) $(SSH_LOGIN_ENGINE)
+SSH_EMULATOR = ssh -p 2223 -i $(SSH_KEY_EMULATOR) $(SSH_LOGIN_EMULATOR)
+
+SCP_EMULATOR = scp -P 2223 -i $(SSH_KEY_EMULATOR)
+
+RPM_I486 = harbour-sailtuner-0.1-1.i486.rpm
+RPM_JOLLA = harbour-sailtuner-0.1-1.armv7hl.rpm
+
+MB2 = mb2 -p $(SOURCE_DIR_ENGINE) 
+
+all: $(BUILD_DIR_LOCAL_I486)/Makefile
+
+$(BUILD_DIR_LOCAL_I486):
+	mkdir -p $@
+
+$(BUILD_DIR_LOCAL_I486)/Makefile: $(BUILD_DIR_LOCAL_I486)
+	$(SSH_ENGINE) "cd $(BUILD_DIR_ENGINE_I486) && $(MB2) qmake $(SOURCE_DIR_ENGINE)/$(PRO_FILE)"
+
+rpm-i486: $(BUILD_DIR_LOCAL_I486)/Makefile
+	$(SSH_ENGINE) "cd $(BUILD_DIR_ENGINE_I486) && $(MB2) rpm"
+
+install-i486: rpm-i486
+	$(SCP_EMULATOR) $(BUILD_DIR_LOCAL_I486)/RPMS/$(RPM_I486) $(SSH_LOGIN_EMULATOR):
+	$(SSH_EMULATOR) "sudo rpm -i $(RPM_I486) --force"
+
+$(BUILD_DIR_LOCAL_JOLLA):
+	mkdir -p $@
+
+$(BUILD_DIR_LOCAL_JOLLA)/Makefile: $(BUILD_DIR_LOCAL_JOLLA)
+	$(SSH_ENGINE) "cd $(BUILD_DIR_ENGINE_JOLLA) && $(MB2) -t $(JOLLA_TARGET) qmake $(SOURCE_DIR_ENGINE)/$(PRO_FILE)"
+
+rpm-jolla: $(BUILD_DIR_LOCAL_JOLLA)/Makefile
+	$(SSH_ENGINE) "cd $(BUILD_DIR_ENGINE_JOLLA) && $(MB2) -t $(JOLLA_TARGET) rpm"
+
+install-jolla: rpm-jolla
+	scp $(BUILD_DIR_LOCAL_JOLLA)/RPMS/$(RPM_JOLLA) $(SSH_LOGIN_JOLLA):
+	ssh $(SSH_LOGIN_JOLLA) "devel-su rpm -i $(RPM_JOLLA) --force"
diff --git a/rpm/harbour-sailtuner.spec b/rpm/harbour-sailtuner.spec
new file mode 100644
index 0000000..735a66b
--- /dev/null
+++ b/rpm/harbour-sailtuner.spec
@@ -0,0 +1,70 @@
+# 
+# Do NOT Edit the Auto-generated Part!
+# Generated by: spectacle version 0.27
+# 
+
+Name:       harbour-sailtuner
+
+# >> macros
+# << macros
+
+%{!?qtc_qmake:%define qtc_qmake %qmake}
+%{!?qtc_qmake5:%define qtc_qmake5 %qmake5}
+%{!?qtc_make:%define qtc_make make}
+%{?qtc_builddir:%define _builddir %qtc_builddir}
+Summary:    Chromatic tuner
+Version:    0.1
+Release:    1
+Group:      Qt/Qt
+License:    GPL
+URL:        http://legolas.vefblog.net/
+Source0:    %{name}-%{version}.tar.bz2
+#Source100:  harbour-saildbmeter.yaml
+Requires:   sailfishsilica-qt5 >= 0.10.9
+BuildRequires:  pkgconfig(sailfishapp) >= 1.0.2
+BuildRequires:  pkgconfig(Qt5Core)
+BuildRequires:  pkgconfig(Qt5Qml)
+BuildRequires:  pkgconfig(Qt5Quick)
+BuildRequires:  desktop-file-utils
+
+%description
+Instrumental multi-temperament chromatic tuner
+
+%prep
+%setup -q -n %{name}-%{version}
+
+# >> setup
+# << setup
+
+%build
+# >> build pre
+# << build pre
+
+%qtc_qmake5 
+
+%qtc_make %{?_smp_mflags}
+
+# >> build post
+# << build post
+
+%install
+rm -rf %{buildroot}
+# >> install pre
+# << install pre
+%qmake5_install
+
+# >> install post
+# << install post
+
+desktop-file-install --delete-original       \
+  --dir %{buildroot}%{_datadir}/applications             \
+   %{buildroot}%{_datadir}/applications/*.desktop
+
+%files
+%defattr(-,root,root,-)
+%{_bindir}
+%{_datadir}/%{name}
+%{_datadir}/applications/%{name}.desktop
+%{_datadir}/icons/hicolor/86x86/apps/%{name}.png
+# >> files
+# << files
diff --git a/src/Tuner.cpp b/src/Tuner.cpp
index 05298b1..b6398f1 100644
--- a/src/Tuner.cpp
+++ b/src/Tuner.cpp
@@ -46,6 +46,7 @@ Tuner::~Tuner()
 
 void Tuner::Start()
 {
+	cerr << __func__ << endl;
 	high_filter->Clear();
 	cross->Clear();
 	recorder->record();
@@ -55,6 +56,7 @@ void Tuner::Start()
 
 void Tuner::Stop()
 {
+	cerr << __func__ << endl;
 	running = false;
 	recorder->stop();
 	runningChanged();
diff --git a/src/audio/ZeroCross.cpp b/src/audio/ZeroCross.cpp
index a20fcc1..75d7cac 100644
--- a/src/audio/ZeroCross.cpp
+++ b/src/audio/ZeroCross.cpp
@@ -9,7 +9,7 @@ using namespace std;
 /// Maximum rest of division to be a multiple of
 #define EPS_DIVISOR 0.1
 /// Consider it is a correct pattern to avoid multiples of
-#define CORRECT_DEVIATION 0.05
+#define CORRECT_DEVIATION 1
 
 // local functions
 
@@ -69,8 +69,8 @@ pair<double,double> FindPattern(const vector<double> &values, double pattern_min
 			best = res;
 		}
 	}
+	cerr << " -> " << best.first << " " << best.second << endl;
 	if (best.second > CORRECT_DEVIATION) return pair<double,double>(0,0);
-	cout << " -> " << best.first << " " << best.second << "  ";
 	return best;
 }
 
diff --git a/src/sailfish.cpp b/src/sailfish.cpp
new file mode 100644
index 0000000..1fa1702
--- /dev/null
+++ b/src/sailfish.cpp
@@ -0,0 +1,33 @@
+#include <QGuiApplication>
+#include <QQuickView>
+#include <QtQml>
+#include <sailfishapp.h>
+#include "Tuner.hpp"
+
+class Main {
+	private:
+	QGuiApplication *app;
+	QQuickView *view;
+
+	public:
+	Main(int &argc, char* argv[]) {
+		app = SailfishApp::application(argc, argv);
+		view = SailfishApp::createView();
+		view->setSource(QUrl("qrc:///qml/Sailfish.qml"));
+		QObject::connect(view->engine(), SIGNAL(quit()), app, SLOT(quit()));
+	}
+	Main() {}
+	~Main() {}
+
+	int Launch() {
+		view->show();
+		return app->exec();
+	}
+};
+
+Q_DECL_EXPORT int main(int argc, char* argv[])
+{
+	qmlRegisterType<Tuner>("harbour.sailtuner.tuner", 1, 0, "Tuner");
+	Main *appli = new Main(argc, argv);
+	return appli->Launch();
+}