diff --git a/mastodon/src/main/java/org/joinmastodon/android/api/StatusInteractionController.java b/mastodon/src/main/java/org/joinmastodon/android/api/StatusInteractionController.java
index 05f3d4156..f2524d046 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/api/StatusInteractionController.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/api/StatusInteractionController.java
@@ -7,14 +7,23 @@ import org.joinmastodon.android.MastodonApp;
 import org.joinmastodon.android.api.requests.statuses.SetStatusBookmarked;
 import org.joinmastodon.android.api.requests.statuses.SetStatusFavorited;
 import org.joinmastodon.android.api.requests.statuses.SetStatusReblogged;
+import org.joinmastodon.android.api.session.AccountSession;
+import org.joinmastodon.android.api.session.AccountSessionManager;
+import org.joinmastodon.android.events.EmojiReactionsUpdatedEvent;
 import org.joinmastodon.android.events.ReblogDeletedEvent;
 import org.joinmastodon.android.events.StatusCountersUpdatedEvent;
 import org.joinmastodon.android.events.StatusCreatedEvent;
-import org.joinmastodon.android.events.StatusDeletedEvent;
+import org.joinmastodon.android.model.Emoji;
+import org.joinmastodon.android.model.EmojiCategory;
+import org.joinmastodon.android.model.EmojiReaction;
+import org.joinmastodon.android.model.Instance;
 import org.joinmastodon.android.model.Status;
 import org.joinmastodon.android.model.StatusPrivacy;
 
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
+import java.util.Optional;
 import java.util.function.Consumer;
 
 import me.grishka.appkit.api.Callback;
@@ -40,6 +49,9 @@ public class StatusInteractionController{
 		if(!Looper.getMainLooper().isCurrentThread())
 			throw new IllegalStateException("Can only be called from main thread");
 
+		AccountSession session=AccountSessionManager.get(accountID);
+		Instance instance=session.getInstance().get();
+
 		SetStatusFavorited current=runningFavoriteRequests.remove(status.id);
 		if(current!=null){
 			current.cancel();
@@ -52,6 +64,7 @@ public class StatusInteractionController{
 						result.favouritesCount = Math.max(0, status.favouritesCount + (favorited ? 1 : -1));
 						cb.accept(result);
 						if(updateCounters) E.post(new StatusCountersUpdatedEvent(result));
+						if(instance.isIceshrimp()) E.post(new EmojiReactionsUpdatedEvent(status.id, result.reactions, false, null));
 					}
 
 					@Override
@@ -61,12 +74,55 @@ public class StatusInteractionController{
 						status.favourited=!favorited;
 						cb.accept(status);
 						if(updateCounters) E.post(new StatusCountersUpdatedEvent(status));
+						if(instance.isIceshrimp()) E.post(new EmojiReactionsUpdatedEvent(status.id, status.reactions, false, null));
 					}
 				})
 				.exec(accountID);
 		runningFavoriteRequests.put(status.id, req);
 		status.favourited=favorited;
 		if(updateCounters) E.post(new StatusCountersUpdatedEvent(status));
+
+		String defaultReactionEmojiRaw=instance.configuration.reactions.defaultReaction;
+		if(!instance.isIceshrimp() || defaultReactionEmojiRaw==null)
+			return;
+
+		boolean reactionIsCustom=defaultReactionEmojiRaw.startsWith(":");
+		String defaultReactionEmoji=reactionIsCustom ? defaultReactionEmojiRaw.substring(1, defaultReactionEmojiRaw.length()-1) : defaultReactionEmojiRaw;
+		ArrayList<EmojiReaction> reactions=new ArrayList<>(status.reactions.size());
+		for(EmojiReaction reaction:status.reactions){
+			reactions.add(reaction.copy());
+		}
+		Optional<EmojiReaction> existingReaction=reactions.stream().filter(r->r.me).findFirst();
+		Optional<EmojiReaction> existingDefaultReaction=reactions.stream().filter(r->r.name.equals(defaultReactionEmoji)).findFirst();
+		if(existingReaction.isPresent() && !favorited){
+			existingReaction.get().me=false;
+			existingReaction.get().count--;
+			existingReaction.get().pendingChange=true;
+		}else if(existingDefaultReaction.isPresent() && favorited){
+			existingDefaultReaction.get().count++;
+			existingDefaultReaction.get().me=true;
+			existingDefaultReaction.get().pendingChange=true;
+		}else if(favorited){
+			EmojiReaction reaction=null;
+			if(reactionIsCustom){
+				List<EmojiCategory> customEmojis=AccountSessionManager.getInstance().getCustomEmojis(session.domain);
+				for(EmojiCategory category:customEmojis){
+					for(Emoji emoji:category.emojis){
+						if(emoji.shortcode.equals(defaultReactionEmoji)){
+							reaction=EmojiReaction.of(emoji, session.self);
+							break;
+						}
+					}
+				}
+				if(reaction==null)
+					reaction=EmojiReaction.of(defaultReactionEmoji, session.self);
+			}else{
+				reaction=EmojiReaction.of(defaultReactionEmoji, session.self);
+			}
+			reaction.pendingChange=true;
+			reactions.add(reaction);
+		}
+		E.post(new EmojiReactionsUpdatedEvent(status.id, reactions, false, null));
 	}
 
 	public void setReblogged(Status status, boolean reblogged, StatusPrivacy visibility, Consumer<Status> cb){
diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/NotificationsListFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/NotificationsListFragment.java
index af6ac9304..9644a498c 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/NotificationsListFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/NotificationsListFragment.java
@@ -275,13 +275,17 @@ public class NotificationsListFragment extends BaseStatusListFragment<Notificati
 	public void onEmojiReactionsChanged(EmojiReactionsUpdatedEvent ev){
 		for(Notification n : data){
 			if(n.status!=null && n.status.getContentStatus().id.equals(ev.id)){
-				n.status.getContentStatus().update(ev);
-				AccountSessionManager.get(accountID).getCacheController().updateNotification(n);
 				for(int i=0; i<list.getChildCount(); i++){
 					RecyclerView.ViewHolder holder=list.getChildViewHolder(list.getChildAt(i));
 					if(holder instanceof EmojiReactionsStatusDisplayItem.Holder reactions && reactions.getItem().status==n.status.getContentStatus() && ev.viewHolder!=holder){
-						reactions.rebind();
-					}else if(holder instanceof TextStatusDisplayItem.Holder text && text.getItem().parentID.equals(n.getID())){
+						reactions.updateReactions(ev.reactions);
+					}
+				}
+				n.status.getContentStatus().update(ev);
+				AccountSessionManager.get(accountID).getCacheController().updateNotification(n);
+				for(int i=0;i<list.getChildCount();i++){
+					RecyclerView.ViewHolder holder=list.getChildViewHolder(list.getChildAt(i));
+					if(holder instanceof TextStatusDisplayItem.Holder text && text.getItem().parentID.equals(n.getID())){
 						text.rebind();
 					}
 				}
diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/StatusListFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/StatusListFragment.java
index c9d238766..140ec138d 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/StatusListFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/StatusListFragment.java
@@ -286,13 +286,17 @@ public abstract class StatusListFragment extends BaseStatusListFragment<Status>
 		public void onEmojiReactionsChanged(EmojiReactionsUpdatedEvent ev){
 			for(Status s:data){
 				if(s.getContentStatus().id.equals(ev.id)){
+					for(int i=0;i<list.getChildCount();i++){
+						RecyclerView.ViewHolder holder=list.getChildViewHolder(list.getChildAt(i));
+						if(holder instanceof EmojiReactionsStatusDisplayItem.Holder reactions && reactions.getItem().status==s.getContentStatus() && ev.viewHolder!=holder){
+							reactions.updateReactions(ev.reactions);
+						}
+					}
 					s.getContentStatus().update(ev);
 					AccountSessionManager.get(accountID).getCacheController().updateStatus(s);
 					for(int i=0;i<list.getChildCount();i++){
 						RecyclerView.ViewHolder holder=list.getChildViewHolder(list.getChildAt(i));
-						if(holder instanceof EmojiReactionsStatusDisplayItem.Holder reactions && reactions.getItem().status==s.getContentStatus() && ev.viewHolder!=holder){
-							reactions.rebind();
-						}else if(holder instanceof TextStatusDisplayItem.Holder text && text.getItem().parentID.equals(s.getID())){
+						if(holder instanceof TextStatusDisplayItem.Holder text && text.getItem().parentID.equals(s.getID())){
 							text.rebind();
 						}
 					}
diff --git a/mastodon/src/main/java/org/joinmastodon/android/model/EmojiReaction.java b/mastodon/src/main/java/org/joinmastodon/android/model/EmojiReaction.java
index 6007dfdb3..343e6a30a 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/model/EmojiReaction.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/model/EmojiReaction.java
@@ -22,6 +22,7 @@ public class EmojiReaction {
 	public String staticUrl;
 
 	public transient ImageLoaderRequest request;
+	public transient boolean pendingChange=false;
 
 	public String getUrl(boolean playGifs){
 		String idealUrl=playGifs ? url : staticUrl;
@@ -60,4 +61,18 @@ public class EmojiReaction {
 		accounts.add(self);
 		accountIds.add(self.id);
 	}
+
+    public EmojiReaction copy() {
+		EmojiReaction r=new EmojiReaction();
+		r.accounts=accounts;
+		r.accountIds=accountIds;
+		r.count=count;
+		r.me=me;
+		r.name=name;
+		r.url=url;
+		r.staticUrl=staticUrl;
+		r.request=request;
+		r.pendingChange=pendingChange;
+		return r;
+    }
 }
diff --git a/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java b/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java
index d41f4e05d..345ff9c16 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/model/Instance.java
@@ -227,6 +227,7 @@ public class Instance extends BaseModel{
 	@Parcel
 	public static class ReactionsConfiguration {
 		public int maxReactions;
+		public String defaultReaction;
 	}
 
 	@Parcel
diff --git a/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/EmojiReactionsStatusDisplayItem.java b/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/EmojiReactionsStatusDisplayItem.java
index d7dd67c62..55ace68a2 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/EmojiReactionsStatusDisplayItem.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/EmojiReactionsStatusDisplayItem.java
@@ -47,6 +47,8 @@ import org.joinmastodon.android.ui.utils.TextDrawable;
 import org.joinmastodon.android.ui.utils.UiUtils;
 import org.joinmastodon.android.ui.views.EmojiReactionButton;
 
+import java.util.List;
+import java.util.Optional;
 import java.util.function.Consumer;
 
 import me.grishka.appkit.Nav;
@@ -196,18 +198,24 @@ public class EmojiReactionsStatusDisplayItem extends StatusDisplayItem {
 			emojiKeyboard.setListener(this);
 			space.setVisibility(View.GONE);
 			root.addView(emojiKeyboard.getView());
-			boolean hidden=item.isHidden();
-			root.setVisibility(hidden ? View.GONE : View.VISIBLE);
-			line.setVisibility(hidden ? View.GONE : View.VISIBLE);
+			updateVisibility(item.isHidden(), true);
+			imgLoader.updateImages();
+			adapter.notifyDataSetChanged();
+        }
+
+		private void updateVisibility(boolean hidden, boolean force){
+			int visibility=hidden ? View.GONE : View.VISIBLE;
+			if(!force && visibility==root.getVisibility())
+				return;
+			root.setVisibility(visibility);
+			line.setVisibility(visibility);
 			line.setPadding(
 					list.getPaddingLeft(),
 					hidden ? 0 : V.dp(8),
 					list.getPaddingRight(),
 					item.forAnnouncement ? V.dp(8) : 0
 			);
-			imgLoader.updateImages();
-			adapter.notifyDataSetChanged();
-        }
+		}
 
 		private void hideEmojiKeyboard(){
 			space.setVisibility(View.GONE);
@@ -267,7 +275,7 @@ public class EmojiReactionsStatusDisplayItem extends StatusDisplayItem {
 					RecyclerView.SmoothScroller scroller=new LinearSmoothScroller(list.getContext());
 					scroller.setTargetPosition(pos);
 					list.getLayoutManager().startSmoothScroll(scroller);
-					updateAddButtonClickable(false);
+					updateMeReactionCount(false);
 				}else{
 					finalExisting.add(me);
 					adapter.notifyItemChanged(item.status.reactions.indexOf(finalExisting));
@@ -297,8 +305,9 @@ public class EmojiReactionsStatusDisplayItem extends StatusDisplayItem {
 			}
 		}
 
-		private void updateAddButtonClickable(boolean deleting) {
-			meReactionCount+=deleting ? -1 : 1;
+		private void updateAddButtonClickable() {
+			if(instance==null || instance.configuration==null || instance.configuration.reactions==null || instance.configuration.reactions.maxReactions==0)
+				return;
 			boolean canReact=meReactionCount<instance.configuration.reactions.maxReactions;
 			addButton.setClickable(canReact);
 
@@ -310,6 +319,68 @@ public class EmojiReactionsStatusDisplayItem extends StatusDisplayItem {
 			anim.start();
 		}
 
+		private void updateMeReactionCount(boolean deleting) {
+			meReactionCount=Math.max(0, meReactionCount + (deleting ? -1 : 1));
+			updateAddButtonClickable();
+		}
+
+		public void updateReactions(List<EmojiReaction> reactions){
+			for(int i=0;i<item.status.reactions.size();i++){
+				EmojiReaction reaction=item.status.reactions.get(i);
+				Optional<EmojiReaction> newReactionOptional=reactions.stream().filter(r->r.name.equals(reaction.name)).findFirst();
+				if(newReactionOptional.isEmpty()){ // deleted reactions
+					adapter.notifyItemRemoved(i);
+					continue;
+				}
+
+				// changed reactions
+				EmojiReaction newReaction=newReactionOptional.get();
+				if(reaction.count!=newReaction.count || reaction.me!=newReaction.me || reaction.pendingChange!=newReaction.pendingChange){
+					if(newReaction.pendingChange){
+						View holderView=list.getChildAt(i);
+						if(holderView!=null){
+							EmojiReactionViewHolder reactionHolder=(EmojiReactionViewHolder) list.getChildViewHolder(holderView);
+							item.setActionProgressVisible(reactionHolder, true);
+						}
+					}else{
+						adapter.notifyItemChanged(i);
+					}
+				}
+			}
+			boolean pendingAddReaction=false;
+			for(EmojiReaction reaction:reactions){
+				if(item.status.reactions.stream().anyMatch(r->r.name.equals(reaction.name)))
+					continue;
+
+				// new reactions
+				if(reaction.pendingChange){
+					pendingAddReaction=true;
+					continue;
+				}
+				int pos=item.status.reactions.size();
+				item.status.reactions.add(pos, reaction);
+				adapter.notifyItemInserted(pos);
+				RecyclerView.SmoothScroller scroller=new LinearSmoothScroller(list.getContext());
+				scroller.setTargetPosition(pos);
+				list.getLayoutManager().startSmoothScroll(scroller);
+			}
+			if(pendingAddReaction){
+				progress.setVisibility(View.VISIBLE);
+				addButton.setClickable(false);
+				addButton.setAlpha(ALPHA_DISABLED);
+			}else{
+				progress.setVisibility(View.GONE);
+			}
+
+			int newMeReactionCount=(int) reactions.stream().filter(r->r.me || r.pendingChange).count();
+			if (newMeReactionCount!=meReactionCount){
+				meReactionCount=newMeReactionCount;
+				updateAddButtonClickable();
+			}
+
+			updateVisibility(reactions.isEmpty() && item.hideEmpty, false);
+		}
+
 		@Override
 		public void setImage(int index, Drawable image){
 			View child=list.getChildAt(index);
@@ -386,6 +457,12 @@ public class EmojiReactionsStatusDisplayItem extends StatusDisplayItem {
 
 			@Override
 			public void onBind(Pair<EmojiReactionsStatusDisplayItem, EmojiReaction> item){
+				if(item.second.pendingChange){
+					itemView.setVisibility(View.GONE);
+					return;
+				}else{
+					itemView.setVisibility(View.VISIBLE);
+				}
 				item.first.setActionProgressVisible(this, false);
 				EmojiReactionsStatusDisplayItem parent=item.first;
 				EmojiReaction reaction=item.second;
@@ -435,7 +512,7 @@ public class EmojiReactionsStatusDisplayItem extends StatusDisplayItem {
 
 						Instance instance=parent.parentFragment.getInstance().get();
 						if(instance.configuration!=null && instance.configuration.reactions!=null && instance.configuration.reactions.maxReactions!=0){
-							adapter.parentHolder.updateAddButtonClickable(deleting);
+							adapter.parentHolder.updateMeReactionCount(deleting);
 						}
 						if(instance.isIceshrimp() && status!=null){
 							parent.parentFragment.onFavoriteChanged(status, adapter.parentHolder.getItemID());