diff --git a/src/components/ManagerPage/AppsList.js b/src/components/ManagerPage/AppsList.js
new file mode 100644
index 00000000..98653d0e
--- /dev/null
+++ b/src/components/ManagerPage/AppsList.js
@@ -0,0 +1,151 @@
+// @flow
+
+import React, { PureComponent } from 'react'
+import styled from 'styled-components'
+
+import { runJob } from 'renderer/events'
+
+import Box from 'components/base/Box'
+import Modal, { ModalBody } from 'components/base/Modal'
+
+import type { Device } from 'types/common'
+
+import ManagerApp from './ManagerApp'
+
+const List = styled(Box).attrs({
+  horizontal: true,
+  m: -2,
+})`
+  flex-wrap: wrap;
+`
+
+let CACHED_APPS = null
+
+const ICONS_FALLBACK = {
+  bitcoin_testnet: 'bitcoin',
+}
+
+type Status = 'loading' | 'idle' | 'busy' | 'success' | 'error'
+
+type jobHandlerOptions = {
+  job: string,
+  successResponse: string,
+  errorResponse: string,
+}
+
+type LedgerApp = {
+  name: string,
+  icon: string,
+  app: Object,
+}
+
+type Props = {
+  device: Device,
+}
+
+type State = {
+  status: Status,
+  error: string | null,
+  appsList: LedgerApp[],
+}
+
+class AppsList extends PureComponent<Props, State> {
+  state = {
+    status: 'loading',
+    error: null,
+    appsList: [],
+  }
+
+  componentDidMount() {
+    this.fetchList()
+  }
+
+  componentWillUnmount() {
+    this._unmounted = true
+  }
+
+  _unmounted = false
+
+  async fetchList() {
+    const appsList =
+      CACHED_APPS ||
+      (await runJob({
+        channel: 'usb',
+        job: 'manager.listApps',
+        successResponse: 'manager.listAppsSuccess',
+        errorResponse: 'manager.listAppsError',
+      }))
+    CACHED_APPS = appsList
+    if (!this._unmounted) {
+      this.setState({ appsList, status: 'idle' })
+    }
+  }
+
+  createDeviceJobHandler = (options: jobHandlerOptions) => (args: { app: any }) => async () => {
+    const appParams = args.app
+    this.setState({ status: 'busy' })
+    try {
+      const { job, successResponse, errorResponse } = options
+      const { device: { path: devicePath } } = this.props
+      const data = { appParams, devicePath }
+      await runJob({ channel: 'usb', job, successResponse, errorResponse, data })
+      this.setState({ status: 'success' })
+    } catch (err) {
+      this.setState({ status: 'error', error: err.message })
+    }
+  }
+
+  handleInstall = this.createDeviceJobHandler({
+    job: 'manager.installApp',
+    successResponse: 'device.appInstalled',
+    errorResponse: 'device.appInstallError',
+  })
+
+  handleUninstall = this.createDeviceJobHandler({
+    job: 'manager.uninstallApp',
+    successResponse: 'device.appUninstalled',
+    errorResponse: 'device.appUninstallError',
+  })
+
+  handleCloseModal = () => this.setState({ status: 'idle' })
+
+  render() {
+    const { status, error } = this.state
+    return (
+      <List>
+        {this.state.appsList.map(c => (
+          <ManagerApp
+            key={c.name}
+            name={c.name}
+            icon={ICONS_FALLBACK[c.icon] || c.icon}
+            onInstall={this.handleInstall(c)}
+            onUninstall={this.handleUninstall(c)}
+          />
+        ))}
+        <Modal
+          isOpened={status !== 'idle' && status !== 'loading'}
+          render={() => (
+            <ModalBody p={6} align="center" justify="center" style={{ height: 300 }}>
+              {status === 'busy' ? (
+                <Box>{'Loading...'}</Box>
+              ) : status === 'error' ? (
+                <Box>
+                  <div>{'error happened'}</div>
+                  {error}
+                  <button onClick={this.handleCloseModal}>close</button>
+                </Box>
+              ) : status === 'success' ? (
+                <Box>
+                  {'success'}
+                  <button onClick={this.handleCloseModal}>close</button>
+                </Box>
+              ) : null}
+            </ModalBody>
+          )}
+        />
+      </List>
+    )
+  }
+}
+
+export default AppsList
diff --git a/src/components/ManagerPage/DeviceInfos.js b/src/components/ManagerPage/DeviceInfos.js
new file mode 100644
index 00000000..71ff1f36
--- /dev/null
+++ b/src/components/ManagerPage/DeviceInfos.js
@@ -0,0 +1,75 @@
+// @flow
+
+import React, { PureComponent } from 'react'
+
+import { runJob } from 'renderer/events'
+import Text from 'components/base/Text'
+import Box, { Card } from 'components/base/Box'
+import Button from 'components/base/Button'
+
+import type { Device, MemoryInfos } from 'types/common'
+
+import MemInfos from './MemInfos'
+
+type Props = {
+  device: Device,
+}
+
+type State = {
+  memoryInfos: ?MemoryInfos,
+  isLoading: boolean,
+}
+
+class DeviceInfos extends PureComponent<Props, State> {
+  state = {
+    isLoading: false,
+    memoryInfos: null,
+  }
+
+  handleGetMemInfos = async () => {
+    try {
+      this.setState({ isLoading: true })
+      const { device: { path: devicePath } } = this.props
+      const memoryInfos = await runJob({
+        channel: 'usb',
+        job: 'manager.getMemInfos',
+        successResponse: 'device.getMemInfosSuccess',
+        errorResponse: 'device.getMemInfosError',
+        data: { devicePath },
+      })
+      this.setState({ memoryInfos, isLoading: false })
+    } catch (err) {
+      this.setState({ isLoading: false })
+    }
+  }
+
+  render() {
+    const { device } = this.props
+    const { memoryInfos, isLoading } = this.state
+
+    const title = (
+      <Text>
+        {device.manufacturer}
+        <Text ff="Museo Sans|Bold">{` ${device.product}`}</Text>
+      </Text>
+    )
+    return (
+      <Card title={title} p={6}>
+        {memoryInfos ? (
+          <MemInfos memoryInfos={memoryInfos} />
+        ) : (
+          <Box flow={2}>
+            <Box horizontal>
+              <Button primary onClick={this.handleGetMemInfos} disabled={isLoading}>
+                {isLoading ? 'Loading...' : 'Read device memory'}
+              </Button>
+            </Box>
+            {isLoading && <Box>{'If asked, confirm operation on device'}</Box>}
+          </Box>
+        )}
+      </Card>
+    )
+  }
+}
+
+export default DeviceInfos
diff --git a/src/components/ManagerPage/MemInfos.js b/src/components/ManagerPage/MemInfos.js
new file mode 100644
index 00000000..c1eb8dc7
--- /dev/null
+++ b/src/components/ManagerPage/MemInfos.js
@@ -0,0 +1,41 @@
+// @flow
+
+import React from 'react'
+import styled from 'styled-components'
+
+import Box from 'components/base/Box'
+
+import type { MemoryInfos } from 'types/common'
+
+const Container = styled(Box).attrs({
+  bg: 'lightgrey',
+  horizontal: true,
+})`
+  border-radius: ${p => p.theme.radii[1]}px;
+  overflow: hidden;
+  height: 24px;
+`
+
+const Step = styled(Box).attrs({
+  bg: p => p.theme.colors[p.c || 'grey'],
+  px: 1,
+  color: 'white',
+})`
+  width: ${p => (p.last ? '' : `${p.percent}%`)};
+  flex-grow: ${p => (p.last ? '1' : '')};
+  text-align: ${p => (p.last ? 'right' : '')};
+`
+
+export default function MemInfos(props: { memoryInfos: MemoryInfos }) {
+  const { memoryInfos: infos } = props
+  const totalSize = infos.applicationsSize + infos.systemSize
+  const appPercent = infos.applicationsSize * 100 / totalSize
+  return (
+    <Container>
+      <Step c="wallet" percent={appPercent}>{`${Math.round(
+        infos.applicationsSize / 1000,
+      )}kb`}</Step>
+      <Step last>{`${Math.round(infos.freeSize / 1000)}kb`}</Step>
+    </Container>
+  )
+}
diff --git a/src/components/ManagerPage/index.js b/src/components/ManagerPage/index.js
index 35c00828..4317f51e 100644
--- a/src/components/ManagerPage/index.js
+++ b/src/components/ManagerPage/index.js
@@ -1,171 +1,67 @@
 // @flow
 
-import React, { PureComponent } from 'react'
+import React, { PureComponent, Fragment } from 'react'
 import { connect } from 'react-redux'
-import styled from 'styled-components'
 import { translate } from 'react-i18next'
 import { compose } from 'redux'
 
-import type { Device } from 'types/common'
+import type { Device, T } from 'types/common'
 
-import { runJob } from 'renderer/events'
-import { getCurrentDevice } from 'reducers/devices'
+import { getCurrentDevice, getDevices } from 'reducers/devices'
 
-import DeviceMonit from 'components/DeviceMonit'
 import Box from 'components/base/Box'
-import Modal, { ModalBody } from 'components/base/Modal'
+import Pills from 'components/base/Pills'
 
-import ManagerApp from './ManagerApp'
-
-const ICONS_FALLBACK = {
-  bitcoin_testnet: 'bitcoin',
-}
-
-const List = styled(Box).attrs({
-  horizontal: true,
-  m: -2,
-})`
-  flex-wrap: wrap;
-`
+import AppsList from './AppsList'
+import DeviceInfos from './DeviceInfos'
 
 const mapStateToProps = state => ({
   device: getCurrentDevice(state),
+  nbDevices: getDevices(state).length,
 })
 
+const TABS = [{ key: 'apps', value: 'apps' }, { key: 'device', value: 'device' }]
+
 type Props = {
+  t: T,
   device: Device,
-}
-
-type Status = 'loading' | 'idle' | 'busy' | 'success' | 'error'
-
-type LedgerApp = {
-  name: string,
-  icon: string,
-  app: Object,
+  nbDevices: number,
 }
 
 type State = {
-  status: Status,
-  error: string | null,
-  appsList: LedgerApp[],
+  currentTab: 'apps' | 'device',
 }
 
 class ManagerPage extends PureComponent<Props, State> {
   state = {
-    status: 'loading',
-    error: null,
-    appsList: [],
-  }
-
-  componentDidMount() {
-    this.fetchList()
-  }
-
-  componentWillUnmount() {
-    this._unmounted = true
-  }
-
-  _unmounted = false
-
-  async fetchList() {
-    const appsList = await runJob({
-      channel: 'usb',
-      job: 'manager.listApps',
-      successResponse: 'manager.listAppsSuccess',
-      errorResponse: 'manager.listAppsError',
-    })
-    if (!this._unmounted) {
-      this.setState({ appsList, status: 'idle' })
-    }
-  }
-
-  createDeviceJobHandler = options => ({ app: appParams }) => async () => {
-    this.setState({ status: 'busy' })
-    try {
-      const { job, successResponse, errorResponse } = options
-      const {
-        device: { path: devicePath },
-      } = this.props
-      const data = { appParams, devicePath }
-      await runJob({ channel: 'usb', job, successResponse, errorResponse, data })
-      this.setState({ status: 'success' })
-    } catch (err) {
-      this.setState({ status: 'error', error: err.message })
-    }
+    currentTab: 'device',
   }
 
-  handleInstall = this.createDeviceJobHandler({
-    job: 'manager.installApp',
-    successResponse: 'device.appInstalled',
-    errorResponse: 'device.appInstallError',
-  })
-
-  handleUninstall = this.createDeviceJobHandler({
-    job: 'manager.uninstallApp',
-    successResponse: 'device.appUninstalled',
-    errorResponse: 'device.appUninstallError',
-  })
-
-  handleCloseModal = () => this.setState({ status: 'idle' })
-
-  renderList = () => (
-    <List>
-      {this.state.appsList.map(c => (
-        <ManagerApp
-          key={c.name}
-          name={c.name}
-          icon={ICONS_FALLBACK[c.icon] || c.icon}
-          onInstall={this.handleInstall(c)}
-          onUninstall={this.handleUninstall(c)}
-        />
-      ))}
-    </List>
-  )
+  handleTabChange = t => this.setState({ currentTab: t.value })
 
   render() {
-    const { status, error } = this.state
+    const { device, t, nbDevices } = this.props
+    const { currentTab } = this.state
+    if (!device) {
+      return 'eu... connecte ton device?'
+    }
+    const tabs = TABS.map(i => {
+      let label = t(`manager:tabs.${i.key}`)
+      if (i.key === 'device') {
+        label += ` (${nbDevices})`
+      }
+      return { ...i, label }
+    })
     return (
-      <DeviceMonit
-        render={deviceStatus => (
-          <Box>
-            {deviceStatus === 'unconnected' && (
-              <Box style={{ height: 500 }} align="center" justify="center">
-                <Box fontSize={8}>{'Connect your device'}</Box>
-              </Box>
-            )}
-            {deviceStatus === 'connected' && (
-              <Box>
-                {status === 'loading' ? (
-                  <Box ff="Museo Sans|Bold">{'Loading app list...'}</Box>
-                ) : (
-                  this.renderList()
-                )}
-              </Box>
-            )}
-            <Modal
-              isOpened={status !== 'idle' && status !== 'loading'}
-              render={() => (
-                <ModalBody p={6} align="center" justify="center" style={{ height: 300 }}>
-                  {status === 'busy' ? (
-                    <Box>{'Loading...'}</Box>
-                  ) : status === 'error' ? (
-                    <Box>
-                      <div>{'error happened'}</div>
-                      {error}
-                      <button onClick={this.handleCloseModal}>close</button>
-                    </Box>
-                  ) : status === 'success' ? (
-                    <Box>
-                      {'success'}
-                      <button onClick={this.handleCloseModal}>close</button>
-                    </Box>
-                  ) : null}
-                </ModalBody>
-              )}
-            />
+      <Fragment>
+        <Pills items={tabs} activeKey={currentTab} onChange={this.handleTabChange} mb={6} />
+        {currentTab === 'apps' && <AppsList device={device} />}
+        {currentTab === 'device' && (
+          <Box flow={4}>
+            <DeviceInfos device={device} />
           </Box>
         )}
-      />
+      </Fragment>
     )
   }
 }
diff --git a/src/components/ManagerPage/stories/MemInfos.stories.js b/src/components/ManagerPage/stories/MemInfos.stories.js
new file mode 100644
index 00000000..5edc97e3
--- /dev/null
+++ b/src/components/ManagerPage/stories/MemInfos.stories.js
@@ -0,0 +1,19 @@
+// @flow
+
+import React from 'react'
+
+import { storiesOf } from '@storybook/react'
+
+import MemInfos from '../MemInfos'
+
+const memoryInfos = {
+  applicationsSize: 36862,
+  freeSize: 118784,
+  systemSize: 171776,
+  totalAppSlots: 30,
+  usedAppSlots: 2,
+}
+
+const stories = storiesOf('Components', module)
+
+stories.add('MemInfos', () => <MemInfos memoryInfos={memoryInfos} />)
diff --git a/src/components/base/Box/index.js b/src/components/base/Box/index.js
index 2f1f492a..bfa54a6c 100644
--- a/src/components/base/Box/index.js
+++ b/src/components/base/Box/index.js
@@ -53,7 +53,7 @@ const Box = styled.div`
 
 const RawCard = styled(Box).attrs({ bg: 'white', p: 3, boxShadow: 0, borderRadius: 1 })``
 
-export const Card = ({ title, ...props }: { title?: string }) => {
+export const Card = ({ title, ...props }: { title?: any }) => {
   if (title) {
     return (
       <Box flow={4} grow>
diff --git a/src/internals/usb/manager/constants.js b/src/internals/usb/manager/constants.js
index 834a7b03..d4562412 100644
--- a/src/internals/usb/manager/constants.js
+++ b/src/internals/usb/manager/constants.js
@@ -1,5 +1,8 @@
 // Socket endpoint
+
 export const BASE_SOCKET_URL = 'ws://api.ledgerwallet.com/update/install'
+// If you want to test locally with https://github.com/LedgerHQ/ledger-update-python-api
+// export const BASE_SOCKET_URL = 'ws://localhost:3001/update'
 
 // List of APDUS
 export const APDUS = {
diff --git a/src/internals/usb/manager/helpers.js b/src/internals/usb/manager/helpers.js
index 28890fb9..9c488c65 100644
--- a/src/internals/usb/manager/helpers.js
+++ b/src/internals/usb/manager/helpers.js
@@ -4,7 +4,6 @@ import CommNodeHid from '@ledgerhq/hw-transport-node-hid'
 import chalk from 'chalk'
 import Websocket from 'ws'
 import qs from 'qs'
-import noop from 'lodash/noop'
 import type Transport from '@ledgerhq/hw-transport'
 
 import type { IPCSend } from 'types/electron'
@@ -23,10 +22,10 @@ type Message = {
 }
 
 type LedgerAppParams = {
-  firmware: string,
-  firmwareKey: string,
-  delete: string,
-  deleteKey: string,
+  firmware?: string,
+  firmwareKey?: string,
+  delete?: string,
+  deleteKey?: string,
 }
 
 /**
@@ -54,8 +53,8 @@ export function createTransportHandler(
     try {
       const transport: Transport<*> = await CommNodeHid.open(devicePath)
       // $FlowFixMe
-      await action(transport, params)
-      send(successResponse)
+      const data = await action(transport, params)
+      send(successResponse, data)
     } catch (err) {
       if (!err) {
         send(errorResponse, { message: 'Unknown error...' })
@@ -72,7 +71,7 @@ export async function installApp(
   transport: Transport<*>,
   { appParams }: { appParams: LedgerAppParams },
 ): Promise<void> {
-  return createSocketDialog(transport, appParams)
+  return createSocketDialog(transport, '/install', appParams)
 }
 
 /**
@@ -82,13 +81,19 @@ export async function uninstallApp(
   transport: Transport<*>,
   { appParams }: { appParams: LedgerAppParams },
 ): Promise<void> {
-  return createSocketDialog(transport, {
+  return createSocketDialog(transport, '/install', {
     ...appParams,
     firmware: appParams.delete,
     firmwareKey: appParams.deleteKey,
   })
 }
 
+export async function getMemInfos(transport: Transport<*>): Promise<Object> {
+  const { targetId } = await getFirmwareInfo(transport)
+  // Dont ask me about this `perso_11`: I don't know. But we need it.
+  return createSocketDialog(transport, '/get-mem-infos', { targetId, perso: 'perso_11' })
+}
+
 /**
  * Send data through ws
  */
@@ -142,10 +147,11 @@ async function bulk(ws: WebsocketType, transport: Transport<*>, msg: Message) {
  * Open socket connection with firmware api, and init a dialog
  * with the device
  */
-function createSocketDialog(transport: Transport<*>, appParams: LedgerAppParams) {
+function createSocketDialog(transport: Transport<*>, endpoint: string, appParams: LedgerAppParams) {
   return new Promise(async (resolve, reject) => {
     try {
-      const url = `${BASE_SOCKET_URL}?${qs.stringify(appParams)}`
+      let lastData
+      const url = `${BASE_SOCKET_URL}${endpoint}?${qs.stringify(appParams)}`
 
       log('WS CONNECTING', url)
       const ws: WebsocketType = new Websocket(url)
@@ -154,14 +160,18 @@ function createSocketDialog(transport: Transport<*>, appParams: LedgerAppParams)
 
       ws.on('close', () => {
         log('WS CLOSED')
-        resolve()
+        resolve(lastData)
       })
 
       ws.on('message', async rawMsg => {
         const handlers = {
           exchange: msg => exchange(ws, transport, msg),
           bulk: msg => bulk(ws, transport, msg),
-          success: noop,
+          success: msg => {
+            if (msg.data) {
+              lastData = msg.data
+            }
+          },
           error: msg => {
             log('WS ERROR', ':(')
             throw new Error(msg.data)
diff --git a/src/internals/usb/manager/index.js b/src/internals/usb/manager/index.js
index bde6aac6..cac154a0 100644
--- a/src/internals/usb/manager/index.js
+++ b/src/internals/usb/manager/index.js
@@ -18,7 +18,7 @@
 
 import type { IPCSend } from 'types/electron'
 import axios from 'axios'
-import { createTransportHandler, installApp, uninstallApp } from './helpers'
+import { createTransportHandler, installApp, uninstallApp, getMemInfos } from './helpers'
 
 export default (send: IPCSend) => ({
   installApp: createTransportHandler(send, {
@@ -33,6 +33,12 @@ export default (send: IPCSend) => ({
     errorResponse: 'device.appUninstallError',
   }),
 
+  getMemInfos: createTransportHandler(send, {
+    action: getMemInfos,
+    successResponse: 'device.getMemInfosSuccess',
+    errorResponse: 'device.getMemInfosError',
+  }),
+
   listApps: async () => {
     try {
       const { data } = await axios.get('https://api.ledgerwallet.com/update/applications')
diff --git a/src/types/common.js b/src/types/common.js
index e8ddea58..11181284 100644
--- a/src/types/common.js
+++ b/src/types/common.js
@@ -30,3 +30,13 @@ export type SettingsMoney = {
 export type Settings = SettingsProfile & SettingsDisplay & SettingsMoney
 
 export type T = (?string, ?Object) => string
+
+// -------------------- Manager
+
+export type MemoryInfos = {
+  applicationsSize: number,
+  freeSize: number,
+  systemSize: number,
+  totalAppSlots: number,
+  usedAppSlots: number,
+}
diff --git a/static/i18n/en/manager.yml b/static/i18n/en/manager.yml
new file mode 100644
index 00000000..1ebabc12
--- /dev/null
+++ b/static/i18n/en/manager.yml
@@ -0,0 +1,3 @@
+tabs:
+  apps: Apps
+  device: My device
diff --git a/yarn.lock b/yarn.lock
index 4ebe7b6a..44ea7bc3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7984,9 +7984,6 @@ ledger-test-library@KhalilBellakrid/ledger-test-library-nodejs#7d37482:
   dependencies:
     axios "^0.17.1"
     bindings "^1.3.0"
-    electron "^1.8.2"
-    electron-builder "^20.0.4"
-    electron-rebuild "^1.7.3"
     nan "^2.6.2"
     prebuild-install "^2.2.2"