3 files changed, 39 insertions, 28 deletions
diff --git a/src/Ryujinx.Ava/UI/Models/Generic/LastPlayedSortComparer.cs b/src/Ryujinx.Ava/UI/Models/Generic/LastPlayedSortComparer.cs
index 8a434655..8340d39d 100644
--- a/src/Ryujinx.Ava/UI/Models/Generic/LastPlayedSortComparer.cs
+++ b/src/Ryujinx.Ava/UI/Models/Generic/LastPlayedSortComparer.cs
@@ -13,20 +13,19 @@ namespace Ryujinx.Ava.UI.Models.Generic
 
         public int Compare(ApplicationData x, ApplicationData y)
         {
-            var aValue = x.LastPlayed;
-            var bValue = y.LastPlayed;
+            DateTime aValue = DateTime.UnixEpoch, bValue = DateTime.UnixEpoch;
 
-            if (!aValue.HasValue)
+            if (x?.LastPlayed != null)
             {
-                aValue = DateTime.UnixEpoch;
+                aValue = x.LastPlayed.Value;
             }
 
-            if (!bValue.HasValue)
+            if (y?.LastPlayed != null)
             {
-                bValue = DateTime.UnixEpoch;
+                bValue = y.LastPlayed.Value;
             }
 
-            return (IsAscending ? 1 : -1) * DateTime.Compare(bValue.Value, aValue.Value);
+            return (IsAscending ? 1 : -1) * DateTime.Compare(aValue, bValue);
         }
     }
 }
diff --git a/src/Ryujinx.Ava/UI/Models/Generic/TimePlayedSortComparer.cs b/src/Ryujinx.Ava/UI/Models/Generic/TimePlayedSortComparer.cs
new file mode 100644
index 00000000..d53ff566
--- /dev/null
+++ b/src/Ryujinx.Ava/UI/Models/Generic/TimePlayedSortComparer.cs
@@ -0,0 +1,31 @@
+using Ryujinx.Ui.App.Common;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.Ava.UI.Models.Generic
+{
+    internal class TimePlayedSortComparer : IComparer<ApplicationData>
+    {
+        public TimePlayedSortComparer() { }
+        public TimePlayedSortComparer(bool isAscending) { IsAscending = isAscending; }
+
+        public bool IsAscending { get; }
+
+        public int Compare(ApplicationData x, ApplicationData y)
+        {
+            TimeSpan aValue = TimeSpan.Zero, bValue = TimeSpan.Zero;
+
+            if (x?.TimePlayed != null)
+            {
+                aValue = x.TimePlayed;
+            }
+
+            if (y?.TimePlayed != null)
+            {
+                bValue = y.TimePlayed;
+            }
+
+            return (IsAscending ? 1 : -1) * TimeSpan.Compare(aValue, bValue);
+        }
+    }
+}
diff --git a/src/Ryujinx.Ava/UI/Models/SaveModel.cs b/src/Ryujinx.Ava/UI/Models/SaveModel.cs
index f15befbb..7b476932 100644
--- a/src/Ryujinx.Ava/UI/Models/SaveModel.cs
+++ b/src/Ryujinx.Ava/UI/Models/SaveModel.cs
@@ -4,7 +4,7 @@ using Ryujinx.Ava.UI.ViewModels;
 using Ryujinx.Ava.UI.Windows;
 using Ryujinx.HLE.FileSystem;
 using Ryujinx.Ui.App.Common;
-using System;
+using Ryujinx.Ui.Common.Helper;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
@@ -38,26 +38,7 @@ namespace Ryujinx.Ava.UI.Models
 
         public bool SizeAvailable { get; set; }
 
-        public string SizeString => GetSizeString();
-
-        private string GetSizeString()
-        {
-            const int Scale = 1024;
-            string[] orders = { "GiB", "MiB", "KiB" };
-            long max = (long)Math.Pow(Scale, orders.Length);
-
-            foreach (string order in orders)
-            {
-                if (Size > max)
-                {
-                    return $"{decimal.Divide(Size, max):##.##} {order}";
-                }
-
-                max /= Scale;
-            }
-
-            return "0 KiB";
-        }
+        public string SizeString => ValueFormatUtils.FormatFileSize(Size);
 
         public SaveModel(SaveDataInfo info)
         {