diff --git a/src/app/core/core.pri b/src/app/core/core.pri
index 401024d03..7627b9046 100644
--- a/src/app/core/core.pri
+++ b/src/app/core/core.pri
@@ -3,14 +3,12 @@
 
 HEADERS += \
     $$PWD/vapplication.h \
-    $$PWD/vformula.h \
     $$PWD/vformulaproperty.h \
     $$PWD/vformulapropertyeditor.h \
     $$PWD/vtooloptionspropertybrowser.h
 
 SOURCES += \
     $$PWD/vapplication.cpp \
-    $$PWD/vformula.cpp \
     $$PWD/vformulaproperty.cpp \
     $$PWD/vformulapropertyeditor.cpp \
     $$PWD/vtooloptionspropertybrowser.cpp
diff --git a/src/app/core/vapplication.cpp b/src/app/core/vapplication.cpp
index e461fc1da..cd70f6d5f 100644
--- a/src/app/core/vapplication.cpp
+++ b/src/app/core/vapplication.cpp
@@ -156,9 +156,9 @@ const QString VApplication::GistFileName = QStringLiteral("gist.json");
  * @param argv command line.
  */
 VApplication::VApplication(int &argc, char **argv)
-    : QApplication(argc, argv), _patternUnit(Unit::Cm), _patternType(MeasurementsType::Individual),
+    : VAbstractApplication(argc, argv), _patternUnit(Unit::Cm),
       trVars(nullptr), undoStack(nullptr), sceneView(nullptr), currentScene(nullptr), autoSaveTimer(nullptr),
-      mainWindow(nullptr), openingPattern(false), settings(nullptr), doc(nullptr), log(nullptr),
+      mainWindow(nullptr), openingPattern(false), doc(nullptr), log(nullptr),
 #if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
       out(nullptr), logLock(nullptr)
 #else
@@ -572,29 +572,6 @@ void VApplication::setOpeningPattern()
     openingPattern = !openingPattern;
 }
 
-//---------------------------------------------------------------------------------------------------------------------
-/**
- * @brief VApplication::OpenSettings get acsses to application settings.
- *
- * Because we can create object in constructor we open file separately.
- */
-void VApplication::OpenSettings()
-{
-    settings = new VSettings(QSettings::IniFormat, QSettings::UserScope, QApplication::organizationName(),
-                             QApplication::applicationName(), this);
-}
-
-//---------------------------------------------------------------------------------------------------------------------
-/**
- * @brief VApplication::getSettings hide settings constructor.
- * @return pointer to class for acssesing to settings in ini file.
- */
-VSettings *VApplication::getSettings()
-{
-    SCASSERT(settings != nullptr);
-    return settings;
-}
-
 //---------------------------------------------------------------------------------------------------------------------
 QGraphicsScene *VApplication::getCurrentScene() const
 {
diff --git a/src/app/core/vapplication.h b/src/app/core/vapplication.h
index 1427e57f8..d480f4dba 100644
--- a/src/app/core/vapplication.h
+++ b/src/app/core/vapplication.h
@@ -29,13 +29,13 @@
 #ifndef VAPPLICATION_H
 #define VAPPLICATION_H
 
-#include <QApplication>
+#include "../libs/vmisc/vabstractapplication.h"
 #include "../options.h"
 #include "../libs/vwidgets/vmaingraphicsview.h"
 #include "../libs/vpatterndb/vtranslatevars.h"
 #include "vsettings.h"
 
-class VApplication;// used in define
+class VApplication;// use in define
 class QUndoStack;
 class VMainGraphicsView;
 class VPattern;
@@ -47,12 +47,12 @@ class QLockFile;
 #if defined(qApp)
 #undef qApp
 #endif
-#define qApp (static_cast<VApplication*>(QCoreApplication::instance()))
+#define qApp (static_cast<VApplication*>(VAbstractApplication::instance()))
 
 /**
  * @brief The VApplication class reimplamentation QApplication class.
  */
-class VApplication : public QApplication
+class VApplication : public VAbstractApplication
 {
     Q_OBJECT
 public:
@@ -64,8 +64,6 @@ public:
     Unit               patternUnit() const;
     const Unit        *patternUnitP() const;
     void               setPatternUnit(const Unit &patternUnit);
-    MeasurementsType   patternType() const;
-    void               setPatternType(const MeasurementsType &patternType);
 
     void               InitOptions();
 
@@ -78,14 +76,6 @@ public:
 
     QString            translationsPath() const;
 
-    template <typename T>
-    QString            LocaleToString(const T &value)
-    {
-        QLocale loc;
-        qApp->getSettings()->GetOsSeparator() ? loc = QLocale::system() : loc = QLocale(QLocale::C);
-        return loc.toString(value);
-    }
-
     QUndoStack         *getUndoStack() const;
     VMainGraphicsView  *getSceneView() const;
     void               setSceneView(VMainGraphicsView *value);
@@ -96,9 +86,6 @@ public:
     bool               getOpeningPattern() const;
     void               setOpeningPattern();
 
-    void               OpenSettings();
-    VSettings          *getSettings();
-
     QGraphicsScene    *getCurrentScene() const;
     void               setCurrentScene(QGraphicsScene *value);
 
@@ -110,7 +97,7 @@ public:
     void               StartLogging();
     QTextStream       *LogFile();
 
-    const VTranslateVars *TrVars();
+    virtual const VTranslateVars *TrVars();
     void               InitTrVars();
 
 
@@ -127,7 +114,6 @@ private slots:
 private:
     Q_DISABLE_COPY(VApplication)
     Unit               _patternUnit;
-    MeasurementsType   _patternType;
     VTranslateVars     *trVars;
     QUndoStack         *undoStack;
     VMainGraphicsView  *sceneView;
@@ -143,10 +129,6 @@ private:
      * we can allow user use Undo option.
      */
     bool               openingPattern;
-    /**
-     * @brief settings pointer to settings. Help hide constructor creation settings. Make make code more readable.
-     */
-    VSettings          *settings;
 
     VPattern           *doc;
     QFile              *log;
@@ -185,18 +167,6 @@ inline const Unit *VApplication::patternUnitP() const
     return &_patternUnit;
 }
 
-//---------------------------------------------------------------------------------------------------------------------
-inline MeasurementsType VApplication::patternType() const
-{
-    return _patternType;
-}
-
-//---------------------------------------------------------------------------------------------------------------------
-inline void VApplication::setPatternType(const MeasurementsType &patternType)
-{
-    _patternType = patternType;
-}
-
 //---------------------------------------------------------------------------------------------------------------------
 inline QUndoStack *VApplication::getUndoStack() const
 {
diff --git a/src/app/core/vformulaproperty.cpp b/src/app/core/vformulaproperty.cpp
index e42887c09..6be529d65 100644
--- a/src/app/core/vformulaproperty.cpp
+++ b/src/app/core/vformulaproperty.cpp
@@ -32,7 +32,7 @@
 #include "../../libs/vpropertyexplorer/vproperty_p.h"
 #include "vformulapropertyeditor.h"
 #include "../../libs/vpropertyexplorer/vproperties.h"
-#include "../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 
 enum class ChildType : char {Invalid = 0, Value = 1, Formula = 2};
 
diff --git a/src/app/core/vformulapropertyeditor.h b/src/app/core/vformulapropertyeditor.h
index 3d3c529aa..e57910837 100644
--- a/src/app/core/vformulapropertyeditor.h
+++ b/src/app/core/vformulapropertyeditor.h
@@ -35,7 +35,7 @@
 #include <QLabel>
 #include <QSpacerItem>
 
-#include "../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 
 class VFormulaPropertyEditor : public QWidget
 {
diff --git a/src/app/core/vtooloptionspropertybrowser.cpp b/src/app/core/vtooloptionspropertybrowser.cpp
index 7e47f60cf..61fbea81c 100644
--- a/src/app/core/vtooloptionspropertybrowser.cpp
+++ b/src/app/core/vtooloptionspropertybrowser.cpp
@@ -34,7 +34,7 @@
 #include "../../libs/vwidgets/vcontrolpointspline.h"
 #include "../../libs/vpropertyexplorer/vproperties.h"
 #include "vformulaproperty.h"
-#include "../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 
 #include <QDockWidget>
 #include <QHBoxLayout>
diff --git a/src/app/tools/drawTools/vtoolarc.cpp b/src/app/tools/drawTools/vtoolarc.cpp
index 5c98e36ef..a520dd08d 100644
--- a/src/app/tools/drawTools/vtoolarc.cpp
+++ b/src/app/tools/drawTools/vtoolarc.cpp
@@ -30,7 +30,7 @@
 #include "../../libs/vpatterndb/calculator.h"
 #include "../../dialogs/tools/dialogarc.h"
 #include "../../libs/vgeometry/varc.h"
-#include "../../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 #include "../../visualization/vistoolarc.h"
 
 #include <QKeyEvent>
diff --git a/src/app/tools/drawTools/vtoolarcwithlength.cpp b/src/app/tools/drawTools/vtoolarcwithlength.cpp
index ae65670b5..bbcde358b 100644
--- a/src/app/tools/drawTools/vtoolarcwithlength.cpp
+++ b/src/app/tools/drawTools/vtoolarcwithlength.cpp
@@ -30,7 +30,7 @@
 #include "../../libs/vpatterndb/calculator.h"
 #include "../../dialogs/tools/dialogarcwithlength.h"
 #include "../../libs/vgeometry/varc.h"
-#include "../../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 #include "../../visualization/vistoolarcwithlength.h"
 
 #include <QKeyEvent>
diff --git a/src/app/tools/drawTools/vtoolcut.cpp b/src/app/tools/drawTools/vtoolcut.cpp
index e6a2fce65..2fbf78129 100644
--- a/src/app/tools/drawTools/vtoolcut.cpp
+++ b/src/app/tools/drawTools/vtoolcut.cpp
@@ -28,7 +28,7 @@
 
 #include "vtoolcut.h"
 #include "../../libs/vgeometry/vpointf.h"
-#include "../../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 VToolCut::VToolCut(VPattern *doc, VContainer *data, const quint32 &id, const QString &formula,
diff --git a/src/app/tools/drawTools/vtoollinepoint.h b/src/app/tools/drawTools/vtoollinepoint.h
index 93d020c68..b8646de6e 100644
--- a/src/app/tools/drawTools/vtoollinepoint.h
+++ b/src/app/tools/drawTools/vtoollinepoint.h
@@ -30,7 +30,7 @@
 #define VTOOLLINEPOINT_H
 
 #include "vtoolpoint.h"
-#include "../../core/vformula.h"
+#include "../../../libs/vpatterndb/vformula.h"
 
 /**
  * @brief The VToolLinePoint class parent for all tools what create point with line.
diff --git a/src/app/tools/drawTools/vtoolpointfromcircleandtangent.cpp b/src/app/tools/drawTools/vtoolpointfromcircleandtangent.cpp
index 6156d55a5..350285d11 100644
--- a/src/app/tools/drawTools/vtoolpointfromcircleandtangent.cpp
+++ b/src/app/tools/drawTools/vtoolpointfromcircleandtangent.cpp
@@ -31,7 +31,7 @@
 #include "../../libs/vgeometry/vpointf.h"
 #include "../../libs/vgeometry/varc.h"
 #include "../../visualization/vistoolpointfromcircleandtangent.h"
-#include "../../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 
 const QString VToolPointFromCircleAndTangent::ToolType = QStringLiteral("pointFromCircleAndTangent");
 
diff --git a/src/app/tools/drawTools/vtoolpointofcontact.cpp b/src/app/tools/drawTools/vtoolpointofcontact.cpp
index 026529f95..42ac9f46f 100644
--- a/src/app/tools/drawTools/vtoolpointofcontact.cpp
+++ b/src/app/tools/drawTools/vtoolpointofcontact.cpp
@@ -30,7 +30,7 @@
 #include "../../libs/vpatterndb/calculator.h"
 #include "../../dialogs/tools/dialogpointofcontact.h"
 #include "../../libs/vgeometry/vpointf.h"
-#include "../../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 #include "../../visualization/vistoolpointofcontact.h"
 #include <QtCore/qmath.h>
 
diff --git a/src/app/tools/drawTools/vtoolpointofintersectioncircles.cpp b/src/app/tools/drawTools/vtoolpointofintersectioncircles.cpp
index b5f7e5823..5eb6833bf 100644
--- a/src/app/tools/drawTools/vtoolpointofintersectioncircles.cpp
+++ b/src/app/tools/drawTools/vtoolpointofintersectioncircles.cpp
@@ -31,7 +31,7 @@
 #include "../../libs/vgeometry/vpointf.h"
 #include "../../libs/vgeometry/varc.h"
 #include "../../visualization/vistoolpointofintersectioncircles.h"
-#include "../../core/vformula.h"
+#include "../../libs/vpatterndb/vformula.h"
 
 const QString VToolPointOfIntersectionCircles::ToolType = QStringLiteral("pointOfIntersectionCircles");
 
diff --git a/src/libs/ifc/ifcdef.h b/src/libs/ifc/ifcdef.h
index e61a27a06..af4eb50ca 100644
--- a/src/libs/ifc/ifcdef.h
+++ b/src/libs/ifc/ifcdef.h
@@ -37,7 +37,6 @@
 #endif /*Q_OS_WIN32*/
 
 enum class Unit : char { Mm, Cm, Inch, Px };
-enum class MeasurementsType : char { Standard, Individual };
 
 static const quint32 null_id = 0;
 
diff --git a/src/libs/ifc/xml/vdomdocument.h b/src/libs/ifc/xml/vdomdocument.h
index 20d78c8eb..ab86e8bb9 100644
--- a/src/libs/ifc/xml/vdomdocument.h
+++ b/src/libs/ifc/xml/vdomdocument.h
@@ -34,6 +34,7 @@
 #include <QCoreApplication>
 
 #include "ifcdef.h"
+#include "../vmisc/def.h"
 #include "../vmisc/logging.h"
 
 Q_DECLARE_LOGGING_CATEGORY(vXML)
diff --git a/src/libs/vmisc/def.h b/src/libs/vmisc/def.h
index 0bab8864f..d1693a929 100644
--- a/src/libs/vmisc/def.h
+++ b/src/libs/vmisc/def.h
@@ -35,6 +35,7 @@
 
 enum class NodeDetail : char { Contour, Modeling };
 enum class SceneObject : char { Point, Line, Spline, Arc, SplinePath, Detail, Unknown };
+enum class MeasurementsType : char { Standard, Individual };
 
 enum class Tool : unsigned char
 {
diff --git a/src/libs/vmisc/vabstractapplication.cpp b/src/libs/vmisc/vabstractapplication.cpp
new file mode 100644
index 000000000..7a31758cb
--- /dev/null
+++ b/src/libs/vmisc/vabstractapplication.cpp
@@ -0,0 +1,61 @@
+/************************************************************************
+ **
+ **  @file   vabstractapplication.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   18 6, 2015
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2015 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#include "vabstractapplication.h"
+
+//---------------------------------------------------------------------------------------------------------------------
+VAbstractApplication::VAbstractApplication(int &argc, char **argv)
+    :QApplication(argc, argv), _patternType(MeasurementsType::Individual), settings(nullptr)
+{}
+
+//---------------------------------------------------------------------------------------------------------------------
+VAbstractApplication::~VAbstractApplication()
+{}
+
+//---------------------------------------------------------------------------------------------------------------------
+/**
+ * @brief OpenSettings get acsses to application settings.
+ *
+ * Because we can create object in constructor we open file separately.
+ */
+void VAbstractApplication::OpenSettings()
+{
+    settings = new VSettings(QSettings::IniFormat, QSettings::UserScope, QApplication::organizationName(),
+                             QApplication::applicationName(), this);
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+/**
+ * @brief getSettings hide settings constructor.
+ * @return pointer to class for acssesing to settings in ini file.
+ */
+VSettings *VAbstractApplication::getSettings()
+{
+    SCASSERT(settings != nullptr);
+    return settings;
+}
diff --git a/src/libs/vmisc/vabstractapplication.h b/src/libs/vmisc/vabstractapplication.h
new file mode 100644
index 000000000..f420c4edc
--- /dev/null
+++ b/src/libs/vmisc/vabstractapplication.h
@@ -0,0 +1,92 @@
+/************************************************************************
+ **
+ **  @file   vabstractapplication.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   18 6, 2015
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2015 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#ifndef VABSTRACTAPPLICATION_H
+#define VABSTRACTAPPLICATION_H
+
+#include <QApplication>
+#include "def.h"
+#include "vsettings.h"
+
+class VAbstractApplication;// use in define
+class VTranslateVars;
+
+#if defined(qApp)
+#undef qApp
+#endif
+#define qApp (static_cast<VAbstractApplication*>(QCoreApplication::instance()))
+
+class VAbstractApplication : public QApplication
+{
+public:
+    VAbstractApplication(int &argc, char ** argv);
+    virtual ~VAbstractApplication();
+
+    virtual const VTranslateVars *TrVars()=0;
+
+    MeasurementsType patternType() const;
+    void             setPatternType(const MeasurementsType &patternType);
+
+    void             OpenSettings();
+    VSettings        *getSettings();
+
+    template <typename T>
+    QString          LocaleToString(const T &value);
+
+
+private:
+    Q_DISABLE_COPY(VAbstractApplication)
+    MeasurementsType   _patternType;
+    /**
+     * @brief settings pointer to settings. Help hide constructor creation settings. Make make code more readable.
+     */
+    VSettings          *settings;
+};
+
+//---------------------------------------------------------------------------------------------------------------------
+inline MeasurementsType VAbstractApplication::patternType() const
+{
+    return _patternType;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+inline void VAbstractApplication::setPatternType(const MeasurementsType &patternType)
+{
+    _patternType = patternType;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+template <typename T>
+QString VAbstractApplication::LocaleToString(const T &value)
+{
+    QLocale loc;
+    qApp->getSettings()->GetOsSeparator() ? loc = QLocale::system() : loc = QLocale(QLocale::C);
+    return loc.toString(value);
+}
+
+#endif // VABSTRACTAPPLICATION_H
diff --git a/src/libs/vmisc/vmisc.pri b/src/libs/vmisc/vmisc.pri
index 658e0d301..e33858f0a 100644
--- a/src/libs/vmisc/vmisc.pri
+++ b/src/libs/vmisc/vmisc.pri
@@ -7,7 +7,8 @@ SOURCES += \
     $$PWD/undoevent.cpp \
     $$PWD/backport/qcommandlineoption.cpp \
     $$PWD/backport/qcommandlineparser.cpp \
-    $$PWD/vsettings.cpp
+    $$PWD/vsettings.cpp \
+    $$PWD/vabstractapplication.cpp
 
 HEADERS += \
     $$PWD/stable.h \
@@ -17,4 +18,5 @@ HEADERS += \
     $$PWD/undoevent.h \
     $$PWD/backport/qcommandlineoption.h \
     $$PWD/backport/qcommandlineparser.h \
-    $$PWD/vsettings.h
+    $$PWD/vsettings.h \
+    $$PWD/vabstractapplication.h
diff --git a/src/libs/vpatterndb/calculator.h b/src/libs/vpatterndb/calculator.h
index db9dba192..9cb2b5a3f 100644
--- a/src/libs/vpatterndb/calculator.h
+++ b/src/libs/vpatterndb/calculator.h
@@ -30,7 +30,7 @@
 #define CALCULATOR_H
 
 #include "../qmuparser/qmuparser.h"
-#include "../ifc/ifcdef.h"
+#include "../vmisc/def.h"
 
 class VContainer;
 
diff --git a/src/app/core/vformula.cpp b/src/libs/vpatterndb/vformula.cpp
similarity index 98%
rename from src/app/core/vformula.cpp
rename to src/libs/vpatterndb/vformula.cpp
index 3cdca81f7..1de34fa53 100644
--- a/src/app/core/vformula.cpp
+++ b/src/libs/vpatterndb/vformula.cpp
@@ -27,10 +27,11 @@
  *************************************************************************/
 
 #include "vformula.h"
-#include "../libs/vpatterndb/calculator.h"
-#include "../libs/vpatterndb/vcontainer.h"
-#include "../core/vapplication.h"
-#include "../libs/vmisc/vsettings.h"
+#include "calculator.h"
+#include "vcontainer.h"
+#include "../vmisc/vabstractapplication.h"
+#include "../vmisc/vsettings.h"
+#include "vtranslatevars.h"
 #include <QDebug>
 
 //VFormula
diff --git a/src/app/core/vformula.h b/src/libs/vpatterndb/vformula.h
similarity index 100%
rename from src/app/core/vformula.h
rename to src/libs/vpatterndb/vformula.h
diff --git a/src/libs/vpatterndb/vpatterndb.pri b/src/libs/vpatterndb/vpatterndb.pri
index 5cf261312..97e7281c6 100644
--- a/src/libs/vpatterndb/vpatterndb.pri
+++ b/src/libs/vpatterndb/vpatterndb.pri
@@ -21,7 +21,8 @@ SOURCES += \
     $$PWD/variables/vmeasurement.cpp \
     $$PWD/variables/vsplineangle.cpp \
     $$PWD/variables/vsplinelength.cpp \
-    $$PWD/variables/vvariable.cpp
+    $$PWD/variables/vvariable.cpp \
+    $$PWD/vformula.cpp
 
 HEADERS += \
     $$PWD/vcontainer.h \
@@ -54,4 +55,5 @@ HEADERS += \
     $$PWD/variables/vsplineangle.h \
     $$PWD/variables/vsplinelength.h \
     $$PWD/variables/vvariable.h \
-    $$PWD/variables/vvariable_p.h
+    $$PWD/variables/vvariable_p.h \
+    $$PWD/vformula.h