diff --git a/plinth/modules/diaspora/manifest.py b/plinth/modules/diaspora/manifest.py
index 9641fe8bf..0ec1578c8 100644
--- a/plinth/modules/diaspora/manifest.py
+++ b/plinth/modules/diaspora/manifest.py
@@ -17,9 +17,10 @@
 
 from django.utils.translation import ugettext_lazy as _
 
-from plinth.utils import format_lazy
-from . import get_configured_domain_name
 from plinth.templatetags.plinth_extras import Mobile_OS, Store
+from plinth.utils import format_lazy
+
+from . import get_configured_domain_name
 
 clients = [{
     'name':
diff --git a/plinth/modules/ejabberd/manifest.py b/plinth/modules/ejabberd/manifest.py
index 8cb992adf..c35fa1767 100644
--- a/plinth/modules/ejabberd/manifest.py
+++ b/plinth/modules/ejabberd/manifest.py
@@ -58,8 +58,8 @@ clients = [{
           'extra security.'),
     'platforms': [{
         'type': 'store',
-        'os': 'iOS',
-        'store_name': 'apple_store',
+        'os': Mobile_OS.IOS.value,
+        'store_name': Store.APP_STORE.value,
         'url': 'https://itunes.apple.com/us/app/chatsecure'
                '/id464200063 '
     }]
diff --git a/plinth/modules/infinoted/manifest.py b/plinth/modules/infinoted/manifest.py
index 9d86bb49a..72f6db676 100644
--- a/plinth/modules/infinoted/manifest.py
+++ b/plinth/modules/infinoted/manifest.py
@@ -17,9 +17,9 @@
 
 from django.utils.translation import ugettext_lazy as _
 
+from plinth import cfg
 from plinth.templatetags.plinth_extras import Desktop_OS
 from plinth.utils import format_lazy
-from plinth import cfg
 
 clients = [{
     'name':
diff --git a/plinth/modules/matrixsynapse/manifest.py b/plinth/modules/matrixsynapse/manifest.py
index 7839358cb..0a981ce0e 100644
--- a/plinth/modules/matrixsynapse/manifest.py
+++ b/plinth/modules/matrixsynapse/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 clients = [{
diff --git a/plinth/modules/minetest/manifest.py b/plinth/modules/minetest/manifest.py
index 341537561..db556ba63 100644
--- a/plinth/modules/minetest/manifest.py
+++ b/plinth/modules/minetest/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 clients = [{
diff --git a/plinth/modules/mumble/manifest.py b/plinth/modules/mumble/manifest.py
index f025f5cd7..f9aaf7b30 100644
--- a/plinth/modules/mumble/manifest.py
+++ b/plinth/modules/mumble/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 clients = [{
@@ -38,9 +39,9 @@ clients = [{
         'name': 'mumble'
     }, {
         'type': 'store',
-        'os': 'iOS',
+        'os': Mobile_OS.IOS.value,
         'os_version': '>=8.0',
-        'store_name': 'apple_store',
+        'store_name': Store.APP_STORE.value,
         'url': 'https://itunes.apple.com/us/app/mumble/id443472808'
     }]
 }, {
@@ -66,9 +67,9 @@ clients = [{
         _('Mumblefly'),
     'platforms': [{
         'type': 'store',
-        'os': 'iOS',
+        'os': Mobile_OS.IOS.value,
         'os_version': '>=7.0',
-        'store_name': 'apple_store',
+        'store_name': Store.APP_STORE.value,
         'url': 'https://itunes.apple.com/dk/app/mumblefy/id858752232'
     }]
 }]
diff --git a/plinth/modules/quassel/manifest.py b/plinth/modules/quassel/manifest.py
index 3e02707e8..f886cd440 100644
--- a/plinth/modules/quassel/manifest.py
+++ b/plinth/modules/quassel/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 clients = [{
diff --git a/plinth/modules/radicale/manifest.py b/plinth/modules/radicale/manifest.py
index f0ce6a18c..3addbf01b 100644
--- a/plinth/modules/radicale/manifest.py
+++ b/plinth/modules/radicale/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Mobile_OS, Store
 
 clients = [{
diff --git a/plinth/modules/repro/manifest.py b/plinth/modules/repro/manifest.py
index 3eee0e36b..b3b036368 100644
--- a/plinth/modules/repro/manifest.py
+++ b/plinth/modules/repro/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 clients = [{
@@ -39,8 +40,8 @@ clients = [{
                '.jitsi.meet '
     }, {
         'type': 'store',
-        'os': 'iOS',
-        'store_name': 'apple_store',
+        'os': Mobile_OS.IOS.value,
+        'store_name': Store.APP_STORE.value,
         'url': 'https://itunes.apple.com/in/app/jitsi-meet/id1165103905'
     }, {
         'type': 'download',
diff --git a/plinth/modules/syncthing/manifest.py b/plinth/modules/syncthing/manifest.py
index 7b94ca2b8..3ec6de5fc 100644
--- a/plinth/modules/syncthing/manifest.py
+++ b/plinth/modules/syncthing/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 metadata = {
diff --git a/plinth/modules/tor/manifest.py b/plinth/modules/tor/manifest.py
index 295ae73cd..2216dc72c 100644
--- a/plinth/modules/tor/manifest.py
+++ b/plinth/modules/tor/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Desktop_OS, Mobile_OS, Store
 
 version = '7.0.6'
diff --git a/plinth/modules/ttrss/manifest.py b/plinth/modules/ttrss/manifest.py
index 50326d872..92cbbab5b 100644
--- a/plinth/modules/ttrss/manifest.py
+++ b/plinth/modules/ttrss/manifest.py
@@ -16,6 +16,7 @@
 #
 
 from django.utils.translation import ugettext_lazy as _
+
 from plinth.templatetags.plinth_extras import Mobile_OS, Store
 
 clients = [{
diff --git a/plinth/templates/clients.html b/plinth/templates/clients.html
index 5f13afba3..7d86d0bcc 100644
--- a/plinth/templates/clients.html
+++ b/plinth/templates/clients.html
@@ -85,7 +85,7 @@
           <td>
               <div class="row">
                   {% for platform in client.platforms %}
-                  {% if platform.type == 'store' and platform.os == 'android' %}
+                  {% if platform.type == 'store' and platform.os == 'android' or platform.os == 'ios' %}
                   <div class="col-md-2 col-xs-4">
                       <a href="{{ platform.url }}">
                           {% with 'theme/icons/'|add:platform.store_name|add:'.png' as icon %}
diff --git a/plinth/templatetags/plinth_extras.py b/plinth/templatetags/plinth_extras.py
index 906c75597..70a5180c9 100644
--- a/plinth/templatetags/plinth_extras.py
+++ b/plinth/templatetags/plinth_extras.py
@@ -16,16 +16,17 @@
 #
 
 import os
-from django import template
 from enum import Enum
 
+from django import template
+
 register = template.Library()
 
 
 class Desktop_OS(Enum):
-    WINDOWS = 'windows'
-    MAC_OS = 'mac-os'
     GNU_LINUX = 'gnu-linux'
+    MAC_OS = 'mac-os'
+    WINDOWS = 'windows'
 
 
 class Mobile_OS(Enum):
@@ -34,8 +35,13 @@ class Mobile_OS(Enum):
 
 
 class Store(Enum):
-    GOOGLE_PLAY = 'google-play'
+    APP_STORE = 'app-store'
     F_DROID = 'f-droid'
+    GOOGLE_PLAY = 'google-play'
+
+
+def string_values(enum):
+    return [x.value for x in list(enum)]
 
 
 def mark_active_menuitem(menu, path):
@@ -84,22 +90,21 @@ def __check(clients, cond):
                if cond(pf))
 
 
-@register.filter(name='has_web_clients')
-def has_web_clients(clients):
-    """Filter to find out whether an application has web clients"""
-    return __check(clients, lambda x: x['type'] == 'web')
+@register.filter(name='has_desktop_clients')
+def has_desktop_clients(clients):
+    """Filter to find out whether an application has desktop clients"""
+    return __check(clients,
+                   lambda x: x.get('os', '') in string_values(Desktop_OS))
 
 
 @register.filter(name='has_mobile_clients')
 def has_mobile_clients(clients):
     """Filter to find out whether an application has mobile clients"""
     return __check(clients,
-                   lambda x: x.get('os', '') == Mobile_OS.ANDROID.value)
+                   lambda x: x.get('os', '') in string_values(Mobile_OS))
 
 
-@register.filter(name='has_desktop_clients')
-def has_desktop_clients(clients):
-    """Filter to find out whether an application has desktop clients"""
-    return __check(
-        clients,
-        lambda x: x.get('os', '') in [x.value for x in list(Desktop_OS)])
+@register.filter(name='has_web_clients')
+def has_web_clients(clients):
+    """Filter to find out whether an application has web clients"""
+    return __check(clients, lambda x: x['type'] == 'web')