diff --git a/bin/gui/screens/app.go b/bin/gui/screens/app.go
new file mode 100644
index 0000000..a6a59f3
--- /dev/null
+++ b/bin/gui/screens/app.go
@@ -0,0 +1,221 @@
+package screens
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"log"
+	"strconv"
+
+	"fyne.io/fyne"
+	"fyne.io/fyne/dialog"
+	"fyne.io/fyne/layout"
+	"fyne.io/fyne/widget"
+	"github.com/lengzhao/wallet/bin/gui/conf"
+	"github.com/lengzhao/wallet/bin/gui/event"
+	"github.com/lengzhao/wallet/bin/gui/res"
+	"github.com/lengzhao/wallet/trans"
+)
+
+func makeAppRunTab(w fyne.Window) fyne.Widget {
+	c := conf.Get()
+	chain := widget.NewSelect(c.Chains, nil)
+	chain.SetSelected(c.DefaultChain)
+	app := widget.NewEntry()
+	app.SetPlaceHolder("app name")
+	var dataType = "string"
+	dType := widget.NewSelect([]string{"string", "hex"}, func(nv string) {
+		dataType = nv
+	})
+	dType.SetSelected(dataType)
+	dEntry := widget.NewEntry()
+	amount := widget.NewEntry()
+	unit := widget.NewLabel(c.CoinUnit)
+	energy := widget.NewEntry()
+	energy.SetText("0.1")
+	unit2 := widget.NewLabel(c.CoinUnit)
+	result := widget.NewEntry()
+	result.Disable()
+
+	event.RegisterConsumer(event.EChangeUnit, func(e string, param ...interface{}) error {
+		unit.SetText(c.CoinUnit)
+		return nil
+	})
+
+	form := &widget.Form{
+		OnCancel: func() {
+			app.SetText("")
+			dEntry.SetText("")
+			amount.SetText("")
+			result.SetText("")
+		},
+		OnSubmit: func() {
+			result.SetText("")
+			costF, err := strconv.ParseFloat(amount.Text, 10)
+			if err != nil {
+				dialog.ShowError(fmt.Errorf("error amount"), w)
+				return
+			}
+			amount.SetPlaceHolder(amount.Text)
+			amount.SetText("")
+			cid, err := strconv.ParseUint(chain.Selected, 10, 64)
+			if err != nil {
+				dialog.ShowError(fmt.Errorf("error chain id"), w)
+				return
+			}
+			if app.Text == "" {
+				dialog.ShowError(fmt.Errorf("require app name"), w)
+				return
+			}
+			var param []byte
+			if dEntry.Text != "" {
+				switch dataType {
+				case "hex":
+					param, err = hex.DecodeString(dEntry.Text)
+					if err != nil {
+						dialog.ShowError(fmt.Errorf("error hex data.%s", err), w)
+						return
+					}
+				default:
+					param = []byte(dEntry.Text)
+				}
+			}
+
+			base := res.GetBaseOfUnit(c.CoinUnit)
+			cost := uint64(costF * float64(base))
+			myWlt := conf.GetWallet()
+			trans := trans.NewTransaction(cid, myWlt.Address, cost)
+			err = trans.RunApp(app.Text, param)
+			if err != nil {
+				dialog.ShowError(err, w)
+				return
+			}
+
+			td := trans.GetSignData()
+			sign := myWlt.Sign(td)
+			trans.SetTheSign(sign)
+			td = trans.Output()
+			key := trans.Key[:]
+
+			err = postTrans(cid, td)
+			if err != nil {
+				// result.SetText(fmt.Sprintf("%s", err))
+				dialog.ShowError(err, w)
+				return
+			}
+			log.Printf("new transfer:%x\n", key)
+			// dialog.ShowInformation("transaction", fmt.Sprintf("%x", key), w)
+			result.SetText(fmt.Sprintf("%x", key))
+			app.SetPlaceHolder(app.Text)
+			app.SetText("")
+		},
+	}
+	form.Append(res.GetLocalString("Chain"), chain)
+	form.Append(res.GetLocalString("App"), app)
+	form.Append(res.GetLocalString("Data Type"), dType)
+	form.Append(res.GetLocalString("Data"), dEntry)
+	borderLayout := layout.NewBorderLayout(nil, nil, nil, unit)
+	form.Append(res.GetLocalString("Amount"), fyne.NewContainerWithLayout(borderLayout, unit, amount))
+	borderLayout2 := layout.NewBorderLayout(nil, nil, nil, unit2)
+	form.Append(res.GetLocalString("Energy"), fyne.NewContainerWithLayout(borderLayout2, unit2, energy))
+
+	return widget.NewVBox(form, result)
+}
+
+type wGovmBody struct {
+	EthAddr string `json:"eth_addr,omitempty"`
+}
+
+func makeWGOVMTab(w fyne.Window) fyne.Widget {
+	c := conf.Get()
+	desc := widget.NewMultiLineEntry()
+	desc.Disable()
+	desc.SetText(res.GetLocalString("wgovm_desc"))
+	ethEntry := widget.NewEntry()
+	amount := widget.NewEntry()
+	unit := widget.NewLabel(c.CoinUnit)
+	energy := widget.NewEntry()
+	energy.SetText("0.1")
+	unit2 := widget.NewLabel(c.CoinUnit)
+	result := widget.NewEntry()
+	result.Disable()
+
+	event.RegisterConsumer(event.EChangeUnit, func(e string, param ...interface{}) error {
+		unit.SetText(c.CoinUnit)
+		return nil
+	})
+
+	form := &widget.Form{
+		OnCancel: func() {
+			ethEntry.SetText("")
+			amount.SetText("")
+			result.SetText("")
+		},
+		OnSubmit: func() {
+			result.SetText("")
+			costF, err := strconv.ParseFloat(amount.Text, 10)
+			if err != nil {
+				dialog.ShowError(fmt.Errorf("error amount"), w)
+				return
+			}
+			amount.SetPlaceHolder(amount.Text)
+			amount.SetText("")
+
+			if costF < 5000 {
+				dialog.ShowError(fmt.Errorf("require amount >= 5000govm"), w)
+				return
+			}
+
+			if ethEntry.Text == "" {
+				dialog.ShowError(fmt.Errorf("require eth address"), w)
+				return
+			}
+			param := []byte{0}
+			info := wGovmBody{ethEntry.Text}
+			d, _ := json.Marshal(info)
+			param = append(param, d...)
+			base := res.GetBaseOfUnit(c.CoinUnit)
+			cost := uint64(costF * float64(base))
+			myWlt := conf.GetWallet()
+			trans := trans.NewTransaction(1, myWlt.Address, cost)
+			err = trans.RunApp("a99b97a411b45c91779e1609386fa18484b8e50016379bd98c6822b491247b9b", param)
+			if err != nil {
+				dialog.ShowError(err, w)
+				return
+			}
+
+			td := trans.GetSignData()
+			sign := myWlt.Sign(td)
+			trans.SetTheSign(sign)
+			td = trans.Output()
+			key := trans.Key[:]
+
+			err = postTrans(1, td)
+			if err != nil {
+				// result.SetText(fmt.Sprintf("%s", err))
+				dialog.ShowError(err, w)
+				return
+			}
+			log.Printf("new transfer:%x\n", key)
+			// dialog.ShowInformation("transaction", fmt.Sprintf("%x", key), w)
+			result.SetText(fmt.Sprintf("%x", key))
+		},
+	}
+
+	form.Append(res.GetLocalString("Description"), desc)
+	form.Append(res.GetLocalString("Eth Address"), ethEntry)
+	borderLayout := layout.NewBorderLayout(nil, nil, nil, unit)
+	form.Append(res.GetLocalString("Amount"), fyne.NewContainerWithLayout(borderLayout, unit, amount))
+	borderLayout2 := layout.NewBorderLayout(nil, nil, nil, unit2)
+	form.Append(res.GetLocalString("Energy"), fyne.NewContainerWithLayout(borderLayout2, unit2, energy))
+
+	return widget.NewVBox(form, result)
+}
+
+// AppScreen shows a panel containing widget demos
+func AppScreen(w fyne.Window) fyne.CanvasObject {
+	return widget.NewTabContainer(
+		widget.NewTabItem(res.GetLocalString("Run APP"), makeAppRunTab(w)),
+		widget.NewTabItem(res.GetLocalString("wGOVM"), makeWGOVMTab(w)),
+	)
+}