diff --git a/project.clj b/project.clj
index ad32fb0b67..fb66598b3e 100644
--- a/project.clj
+++ b/project.clj
@@ -24,7 +24,6 @@
                  [cljsjs/moment "2.10.6-4"]
                  [funcool/struct "1.0.0"]
                  [funcool/lentes "1.2.0"]
-                 [funcool/promesa "1.5.0"]
                  [funcool/beicon "2.3.0"]
                  [funcool/cuerdas "1.0.2"]
                  [funcool/bide "1.0.5"]]
diff --git a/src/uxbox/main/data/auth.cljs b/src/uxbox/main/data/auth.cljs
index b110f1a4ef..6f2a7e64e4 100644
--- a/src/uxbox/main/data/auth.cljs
+++ b/src/uxbox/main/data/auth.cljs
@@ -7,7 +7,6 @@
 
 (ns uxbox.main.data.auth
   (:require [beicon.core :as rx]
-            [promesa.core :as p]
             [uxbox.main.repo :as rp]
             [uxbox.util.rstore :as rs]
             [uxbox.util.router :as rt]
diff --git a/src/uxbox/main/data/forms.cljs b/src/uxbox/main/data/forms.cljs
index a18f46126b..dd0b8616b3 100644
--- a/src/uxbox/main/data/forms.cljs
+++ b/src/uxbox/main/data/forms.cljs
@@ -6,7 +6,6 @@
 
 (ns uxbox.main.data.forms
   (:require [beicon.core :as rx]
-            [promesa.core :as p]
             [lentes.core :as l]
             [uxbox.main.repo :as rp]
             [uxbox.util.rstore :as rs]
diff --git a/src/uxbox/main/data/history.cljs b/src/uxbox/main/data/history.cljs
index f85f736370..311e3fa073 100644
--- a/src/uxbox/main/data/history.cljs
+++ b/src/uxbox/main/data/history.cljs
@@ -6,7 +6,6 @@
 
 (ns uxbox.main.data.history
   (:require [cuerdas.core :as str]
-            [promesa.core :as p]
             [beicon.core :as rx]
             [lentes.core :as l]
             [uxbox.util.rstore :as rs]
diff --git a/src/uxbox/main/data/images.cljs b/src/uxbox/main/data/images.cljs
index c606706ce1..3da19eefa3 100644
--- a/src/uxbox/main/data/images.cljs
+++ b/src/uxbox/main/data/images.cljs
@@ -7,7 +7,6 @@
 (ns uxbox.main.data.images
   (:require [cuerdas.core :as str]
             [beicon.core :as rx]
-            [promesa.core :as p]
             [uxbox.util.data :refer (jscoll->vec)]
             [uxbox.util.uuid :as uuid]
             [uxbox.util.rstore :as rs]
diff --git a/src/uxbox/main/data/lightbox.cljs b/src/uxbox/main/data/lightbox.cljs
index 733fc7ed19..c17b2439c1 100644
--- a/src/uxbox/main/data/lightbox.cljs
+++ b/src/uxbox/main/data/lightbox.cljs
@@ -5,8 +5,7 @@
 ;; Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
 
 (ns uxbox.main.data.lightbox
-  (:require [promesa.core :as p]
-            [beicon.core :as rx]
+  (:require [beicon.core :as rx]
             [lentes.core :as l]
             [uxbox.util.rstore :as rs]))
 
diff --git a/src/uxbox/main/data/messages.cljs b/src/uxbox/main/data/messages.cljs
index 8aac4398f7..fdf7bc6fcf 100644
--- a/src/uxbox/main/data/messages.cljs
+++ b/src/uxbox/main/data/messages.cljs
@@ -6,9 +6,9 @@
 
 (ns uxbox.main.data.messages
   (:require [cuerdas.core :as str]
-            [promesa.core :as p]
             [beicon.core :as rx]
             [lentes.core :as l]
+            [uxbox.util.timers :as ts]
             [uxbox.util.rstore :as rs]))
 
 ;; --- Constants
@@ -88,15 +88,15 @@
 
 (defn error!
   [& args]
-  (p/schedule 0 #(rs/emit! (apply show-error args))))
+  (ts/schedule 0 #(rs/emit! (apply show-error args))))
 
 (defn info!
   [& args]
-  (p/schedule 0 #(rs/emit! (apply show-info args))))
+  (ts/schedule 0 #(rs/emit! (apply show-info args))))
 
 (defn dialog!
   [& args]
-  (p/schedule 0 #(rs/emit! (apply show-dialog args))))
+  (ts/schedule 0 #(rs/emit! (apply show-dialog args))))
 
 (defn close!
   []
diff --git a/src/uxbox/main/data/pages.cljs b/src/uxbox/main/data/pages.cljs
index 1cb39ec62e..efdb095fa0 100644
--- a/src/uxbox/main/data/pages.cljs
+++ b/src/uxbox/main/data/pages.cljs
@@ -7,7 +7,6 @@
 
 (ns uxbox.main.data.pages
   (:require [cuerdas.core :as str]
-            [promesa.core :as p]
             [beicon.core :as rx]
             [lentes.core :as l]
             [uxbox.util.rstore :as rs]
diff --git a/src/uxbox/main/data/users.cljs b/src/uxbox/main/data/users.cljs
index f25ff101d9..d12bb3558b 100644
--- a/src/uxbox/main/data/users.cljs
+++ b/src/uxbox/main/data/users.cljs
@@ -6,7 +6,6 @@
 
 (ns uxbox.main.data.users
   (:require [beicon.core :as rx]
-            [promesa.core :as p]
             [uxbox.main.repo :as rp]
             [uxbox.util.rstore :as rs]
             [uxbox.main.state :as st]
diff --git a/src/uxbox/main/repo/impl.cljs b/src/uxbox/main/repo/impl.cljs
index 959d208a35..101290787a 100644
--- a/src/uxbox/main/repo/impl.cljs
+++ b/src/uxbox/main/repo/impl.cljs
@@ -6,7 +6,6 @@
 
 (ns uxbox.main.repo.impl
   (:require [clojure.walk :as walk]
-            [promesa.core :as p :include-macros true]
             [beicon.core :as rx]
             [uxbox.config :refer (url)]
             [uxbox.util.http :as http]
diff --git a/src/uxbox/main/ui.cljs b/src/uxbox/main/ui.cljs
index cd3888f031..e61985d381 100644
--- a/src/uxbox/main/ui.cljs
+++ b/src/uxbox/main/ui.cljs
@@ -6,8 +6,7 @@
 ;; Copyright (c) 2015-2016 Juan de la Cruz <delacruzgarciajuan@gmail.com>
 
 (ns uxbox.main.ui
-  (:require [promesa.core :as p]
-            [beicon.core :as rx]
+  (:require [beicon.core :as rx]
             [lentes.core :as l]
             [cuerdas.core :as str]
             [bide.core :as bc]
@@ -23,6 +22,7 @@
             [uxbox.main.ui.dashboard :as dashboard]
             [uxbox.main.ui.settings :as settings]
             [uxbox.main.ui.workspace :refer (workspace)]
+            [uxbox.util.timers :as ts]
             [uxbox.util.router :as rt]
             [uxbox.util.rstore :as rs]
             [uxbox.util.i18n :refer (tr)]
@@ -94,7 +94,7 @@
         location (:id route)
         params (:params route)]
     (if (and (restricted? location) (not auth))
-      (do (p/schedule 0 #(rt/go :auth/login)) nil)
+      (do (ts/schedule 0 #(rt/go :auth/login)) nil)
       (case location
         :auth/login (auth/login-page)
         :auth/register (auth/register-page)
diff --git a/src/uxbox/main/ui/messages.cljs b/src/uxbox/main/ui/messages.cljs
index 771b52db8e..968de8ea64 100644
--- a/src/uxbox/main/ui/messages.cljs
+++ b/src/uxbox/main/ui/messages.cljs
@@ -1,11 +1,11 @@
 (ns uxbox.main.ui.messages
   (:require [sablono.core :as html :refer-macros [html]]
             [rum.core :as rum]
-            [promesa.core :as p]
             [lentes.core :as l]
             [uxbox.main.state :as st]
             [uxbox.main.data.messages :as udm]
             [uxbox.main.ui.icons :as i]
+            [uxbox.util.timers :as ts]
             [uxbox.util.mixins :as mx :include-macros true]
             [uxbox.util.data :refer (classnames)]
             [uxbox.util.dom :as dom]))
@@ -47,13 +47,13 @@
     (letfn [(accept [event]
               (dom/prevent-default event)
               (on-accept)
-              (p/schedule 0 udm/close!))
+              (ts/schedule 0 udm/close!))
 
             (cancel [event]
               (dom/prevent-default event)
               (when on-cancel
                 (on-cancel))
-              (p/schedule 0 udm/close!))]
+              (ts/schedule 0 udm/close!))]
       (html
        [:div.message {:class classes}
         [:div.message-body
diff --git a/src/uxbox/main/ui/workspace/download.cljs b/src/uxbox/main/ui/workspace/download.cljs
index e166ca320a..d4e19f6a67 100644
--- a/src/uxbox/main/ui/workspace/download.cljs
+++ b/src/uxbox/main/ui/workspace/download.cljs
@@ -7,7 +7,7 @@
 
 (ns uxbox.main.ui.workspace.download
   (:require [cuerdas.core :as str]
-            [promesa.core :as p]
+            [beicon.core :as rx]
             [uxbox.main.data.lightbox :as udl]
             [uxbox.main.exports :as exports]
             [uxbox.main.state :as st]
@@ -72,21 +72,22 @@
 
 (defn- download-project-zip
   [{:keys [name] :as project} pages]
-  (p/alet [files (generate-files pages)
-           blob (p/await (zip/build files))
-           uri  (blob/create-uri blob)
-           link (.createElement js/document "a")
-           event (js/MouseEvent. "click")
-           now (dt/now)]
-    (.setAttribute link "href" uri)
-    (.setAttribute link "download" (str (str/uslug name) "_"
-                                        (dt/format now :unix)
-                                        ".zip"))
-
-    (.appendChild (.-body js/document) link)
-    (.dispatchEvent link event)
-    (blob/revoke-uri uri)
-    (.removeChild (.-body js/document) link)))
+  (let [event (js/MouseEvent. "click")
+        link (.createElement js/document "a")
+        now (dt/now)
+        stream (->> (rx/from-coll (generate-files pages))
+                    (rx/reduce conj [])
+                    (rx/mapcat zip/build)
+                    (rx/map blob/create-uri)
+                    (rx/take 1))
+        download (str (str/uslug name) "_" (dt/format now :unix) ".zip")]
+    (rx/subscribe stream (fn [uri]
+                           (.setAttribute link "download" download)
+                           (.setAttribute link "href" uri)
+                           (.appendChild (.-body js/document) link)
+                           (.dispatchEvent link event)
+                           (blob/revoke-uri uri)
+                           (.removeChild (.-body js/document) link)))))
 
 (mx/defcs download-dialog
   {:mixins [mx/static mx/reactive]}
diff --git a/src/uxbox/util/timers.cljs b/src/uxbox/util/timers.cljs
new file mode 100644
index 0000000000..6d04ae12ef
--- /dev/null
+++ b/src/uxbox/util/timers.cljs
@@ -0,0 +1,11 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
+
+(ns uxbox.util.timers)
+
+(defn schedule
+  [ms func]
+  (js/setTimeout func ms))
diff --git a/src/uxbox/util/zip.cljs b/src/uxbox/util/zip.cljs
index 2c2a6791ad..3373553c76 100644
--- a/src/uxbox/util/zip.cljs
+++ b/src/uxbox/util/zip.cljs
@@ -7,18 +7,13 @@
 (ns uxbox.util.zip
   "Helpers for make zip file (using jszip)."
   (:require [vendor.jszip]
-            [promesa.core :as p]))
-
-(defn build*
-  [files resolve reject]
-  (let [zipobj (js/JSZip.)]
-    (run! (fn [[name content]]
-            (.file zipobj name content))
-          files)
-    (-> (.generateAsync zipobj #js {:type "blob"})
-        (.then resolve reject))))
+            [beicon.core :as rx]))
 
 (defn build
   [files]
-  (p/promise (fn [resolve reject]
-               (build* files resolve reject))))
+  (letfn [(attach-file [zobj [name content]]
+            (.file zobj name content))]
+    (let [zobj (js/JSZip.)]
+      (run! (partial attach-file zobj) files)
+      (->> (.generateAsync zobj #js {:type "blob"})
+           (rx/from-promise)))))
diff --git a/src/uxbox/view/ui/viewer.cljs b/src/uxbox/view/ui/viewer.cljs
index daf3dcfa76..5ce6fa5c0b 100644
--- a/src/uxbox/view/ui/viewer.cljs
+++ b/src/uxbox/view/ui/viewer.cljs
@@ -7,7 +7,6 @@
 
 (ns uxbox.view.ui.viewer
   (:require [lentes.core :as l]
-            [promesa.core :as p]
             [uxbox.util.i18n :refer (tr)]
             [uxbox.util.rstore :as rs]
             [uxbox.util.router :as rt]
diff --git a/src/uxbox/view/ui/viewer/interactions.cljs b/src/uxbox/view/ui/viewer/interactions.cljs
index 86e4cf2711..428c6c44e7 100644
--- a/src/uxbox/view/ui/viewer/interactions.cljs
+++ b/src/uxbox/view/ui/viewer/interactions.cljs
@@ -5,12 +5,12 @@
 ;; Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
 
 (ns uxbox.view.ui.viewer.interactions
-  (:require [promesa.core :as p]
-            [uxbox.util.dom :as dom]
+  (:require [uxbox.util.dom :as dom]
             [uxbox.util.rstore :as rs]
-            [uxbox.main.geom :as geom]
             [uxbox.util.geom.matrix :as gmt]
             [uxbox.util.geom.point :as gpt]
+            [uxbox.util.timers :as ts]
+            [uxbox.main.geom :as geom]
             [uxbox.main.state :as st]
             [uxbox.view.data.viewer :as dv]
             [vendor.snapsvg])
@@ -52,7 +52,7 @@
   [dom {:keys [delay duration easing] :as opts}]
   (let [props (dissoc opts :delay :duration :easing)
         snap (js/Snap. dom)]
-    (p/schedule delay #(.animate snap (clj->js props) duration easing))))
+    (ts/schedule delay #(.animate snap (clj->js props) duration easing))))
 
 ;; --- Interactions to Animation Compilation