diff --git a/src/iOS.Autofill/Utilities/AutofillHelpers.cs b/src/iOS.Autofill/Utilities/AutofillHelpers.cs
new file mode 100644
index 000000000..d61f92575
--- /dev/null
+++ b/src/iOS.Autofill/Utilities/AutofillHelpers.cs
@@ -0,0 +1,107 @@
+using System;
+using System.Linq;
+using Bit.App.Resources;
+using Bit.iOS.Core.Utilities;
+using Bit.iOS.Core.Views;
+using Foundation;
+using UIKit;
+
+namespace Bit.iOS.Autofill.Utilities
+{
+    public static class AutofillHelpers
+    {
+        /*
+        public static void TableRowSelected(UITableView tableView, NSIndexPath indexPath,
+            ExtensionTableSource tableSource, CredentialProviderViewController cpViewController,
+            UITableViewController controller, ISettings settings, string loginAddSegue)
+        {
+            tableView.DeselectRow(indexPath, true);
+            tableView.EndEditing(true);
+
+            if(tableSource.Items == null || tableSource.Items.Count() == 0)
+            {
+                controller.PerformSegue(loginAddSegue, tableSource);
+                return;
+            }
+
+            var item = tableSource.Items.ElementAt(indexPath.Row);
+            if(item == null)
+            {
+                cpViewController.CompleteRequest(null);
+                return;
+            }
+
+            if(!string.IsNullOrWhiteSpace(item.Username) && !string.IsNullOrWhiteSpace(item.Password))
+            {
+                string totp = null;
+                if(!settings.GetValueOrDefault(App.Constants.SettingDisableTotpCopy, false))
+                {
+                    totp = tableSource.GetTotp(item);
+                }
+
+                cpViewController.CompleteRequest(item.Username, item.Password, totp);
+            }
+            else if(!string.IsNullOrWhiteSpace(item.Username) || !string.IsNullOrWhiteSpace(item.Password) ||
+                !string.IsNullOrWhiteSpace(item.Totp.Value))
+            {
+                var sheet = Dialogs.CreateActionSheet(item.Name, controller);
+                if(!string.IsNullOrWhiteSpace(item.Username))
+                {
+                    sheet.AddAction(UIAlertAction.Create(AppResources.CopyUsername, UIAlertActionStyle.Default, a =>
+                    {
+                        UIPasteboard clipboard = UIPasteboard.General;
+                        clipboard.String = item.Username;
+                        var alert = Dialogs.CreateMessageAlert(AppResources.CopyUsername);
+                        controller.PresentViewController(alert, true, () =>
+                        {
+                            controller.DismissViewController(true, null);
+                        });
+                    }));
+                }
+
+                if(!string.IsNullOrWhiteSpace(item.Password))
+                {
+                    sheet.AddAction(UIAlertAction.Create(AppResources.CopyPassword, UIAlertActionStyle.Default, a =>
+                    {
+                        UIPasteboard clipboard = UIPasteboard.General;
+                        clipboard.String = item.Password;
+                        var alert = Dialogs.CreateMessageAlert(AppResources.CopiedPassword);
+                        controller.PresentViewController(alert, true, () =>
+                        {
+                            controller.DismissViewController(true, null);
+                        });
+                    }));
+                }
+
+                if(!string.IsNullOrWhiteSpace(item.Totp.Value))
+                {
+                    sheet.AddAction(UIAlertAction.Create(AppResources.CopyTotp, UIAlertActionStyle.Default, a =>
+                    {
+                        var totp = tableSource.GetTotp(item);
+                        if(string.IsNullOrWhiteSpace(totp))
+                        {
+                            return;
+                        }
+
+                        UIPasteboard clipboard = UIPasteboard.General;
+                        clipboard.String = totp;
+                        var alert = Dialogs.CreateMessageAlert(AppResources.CopiedTotp);
+                        controller.PresentViewController(alert, true, () =>
+                        {
+                            controller.DismissViewController(true, null);
+                        });
+                    }));
+                }
+
+                sheet.AddAction(UIAlertAction.Create(AppResources.Cancel, UIAlertActionStyle.Cancel, null));
+                controller.PresentViewController(sheet, true, null);
+            }
+            else
+            {
+                var alert = Dialogs.CreateAlert(null, AppResources.NoUsernamePasswordConfigured, AppResources.Ok);
+                controller.PresentViewController(alert, true, null);
+            }
+        }
+        */
+    }
+}
\ No newline at end of file
diff --git a/src/iOS.Autofill/iOS.Autofill.csproj b/src/iOS.Autofill/iOS.Autofill.csproj
index 50e89a395..ac3e04f28 100644
--- a/src/iOS.Autofill/iOS.Autofill.csproj
+++ b/src/iOS.Autofill/iOS.Autofill.csproj
@@ -66,6 +66,7 @@
   <ItemGroup>
     <Compile Include="Main.cs" />
     <Compile Include="AppDelegate.cs" />
+    <Compile Include="Utilities\AutofillHelpers.cs" />
     <None Include="Info.plist" />
     <None Include="Entitlements.plist" />
     <Compile Include="Models\Context.cs" />
@@ -85,6 +86,10 @@
     <Reference Include="Xamarin.iOS" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\App\App.csproj">
+      <Project>{ee44c6a1-2a85-45fe-8d9b-bf1d5f88809c}</Project>
+      <Name>App</Name>
+    </ProjectReference>
     <ProjectReference Include="..\iOS.Core\iOS.Core.csproj">
       <Project>{e71f3053-056c-4381-9638-048ed73bdff6}</Project>
       <Name>iOS.Core</Name>
diff --git a/src/iOS.Extension/Models/Context.cs b/src/iOS.Extension/Models/Context.cs
new file mode 100644
index 000000000..20961344e
--- /dev/null
+++ b/src/iOS.Extension/Models/Context.cs
@@ -0,0 +1,17 @@
+using Foundation;
+using Bit.iOS.Core.Models;
+
+namespace Bit.iOS.Extension.Models
+{
+    public class Context : AppExtensionContext
+    {
+        public NSExtensionContext ExtContext { get; set; }
+        public string ProviderType { get; set; }
+        public string LoginTitle { get; set; }
+        public string Username { get; set; }
+        public string Password { get; set; }
+        public string OldPassword { get; set; }
+        public string Notes { get; set; }
+        public PageDetails Details { get; set; }
+    }
+}
diff --git a/src/iOS.Extension/Models/FillScript.cs b/src/iOS.Extension/Models/FillScript.cs
new file mode 100644
index 000000000..0364d14dd
--- /dev/null
+++ b/src/iOS.Extension/Models/FillScript.cs
@@ -0,0 +1,276 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json;
+using System.Text.RegularExpressions;
+
+namespace Bit.iOS.Extension.Models
+{
+    public class FillScript
+    {
+        private static string[] _usernameFieldNames = new[]{ "username", "user name", "email",
+            "email address", "e-mail", "e-mail address", "userid", "user id" };
+
+        public FillScript(PageDetails pageDetails, string fillUsername, string fillPassword,
+            List<Tuple<string, string>> fillFields)
+        {
+            if(pageDetails == null)
+            {
+                return;
+            }
+
+            DocumentUUID = pageDetails.DocumentUUID;
+
+            var filledFields = new Dictionary<string, PageDetails.Field>();
+
+            if(fillFields?.Any() ?? false)
+            {
+                var fieldNames = fillFields.Select(f => f.Item1?.ToLower()).ToArray();
+                foreach(var field in pageDetails.Fields.Where(f => f.Viewable))
+                {
+                    if(filledFields.ContainsKey(field.OpId))
+                    {
+                        continue;
+                    }
+
+                    var matchingIndex = FindMatchingFieldIndex(field, fieldNames);
+                    if(matchingIndex > -1)
+                    {
+                        filledFields.Add(field.OpId, field);
+                        Script.Add(new List<string> { "click_on_opid", field.OpId });
+                        Script.Add(new List<string> { "fill_by_opid", field.OpId, fillFields[matchingIndex].Item2 });
+                    }
+                }
+            }
+
+            if(string.IsNullOrWhiteSpace(fillPassword))
+            {
+                // No password for this login. Maybe they just wanted to auto-fill some custom fields?
+                SetFillScriptForFocus(filledFields);
+                return;
+            }
+
+            List<PageDetails.Field> usernames = new List<PageDetails.Field>();
+            List<PageDetails.Field> passwords = new List<PageDetails.Field>();
+
+            var passwordFields = pageDetails.Fields.Where(f => f.Type == "password" && f.Viewable).ToArray();
+            if(!passwordFields.Any())
+            {
+                // not able to find any viewable password fields. maybe there are some "hidden" ones?
+                passwordFields = pageDetails.Fields.Where(f => f.Type == "password").ToArray();
+            }
+
+            foreach(var form in pageDetails.Forms)
+            {
+                var passwordFieldsForForm = passwordFields.Where(f => f.Form == form.Key).ToArray();
+                passwords.AddRange(passwordFieldsForForm);
+
+                if(string.IsNullOrWhiteSpace(fillUsername))
+                {
+                    continue;
+                }
+
+                foreach(var pf in passwordFieldsForForm)
+                {
+                    var username = FindUsernameField(pageDetails, pf, false, true);
+                    if(username == null)
+                    {
+                        // not able to find any viewable username fields. maybe there are some "hidden" ones?
+                        username = FindUsernameField(pageDetails, pf, true, true);
+                    }
+
+                    if(username != null)
+                    {
+                        usernames.Add(username);
+                    }
+                }
+            }
+
+            if(passwordFields.Any() && !passwords.Any())
+            {
+                // The page does not have any forms with password fields. Use the first password field on the page and the
+                // input field just before it as the username.
+
+                var pf = passwordFields.First();
+                passwords.Add(pf);
+
+                if(!string.IsNullOrWhiteSpace(fillUsername) && pf.ElementNumber > 0)
+                {
+                    var username = FindUsernameField(pageDetails, pf, false, false);
+                    if(username == null)
+                    {
+                        // not able to find any viewable username fields. maybe there are some "hidden" ones?
+                        username = FindUsernameField(pageDetails, pf, true, false);
+                    }
+
+                    if(username != null)
+                    {
+                        usernames.Add(username);
+                    }
+                }
+            }
+
+            if(!passwordFields.Any())
+            {
+                // No password fields on this page. Let's try to just fuzzy fill the username.
+                var usernameFieldNamesList = _usernameFieldNames.ToList();
+                foreach(var f in pageDetails.Fields)
+                {
+                    if(f.Viewable && (f.Type == "text" || f.Type == "email" || f.Type == "tel") &&
+                        FieldIsFuzzyMatch(f, usernameFieldNamesList))
+                    {
+                        usernames.Add(f);
+                    }
+                }
+            }
+
+            foreach(var username in usernames.Where(u => !filledFields.ContainsKey(u.OpId)))
+            {
+                filledFields.Add(username.OpId, username);
+                Script.Add(new List<string> { "click_on_opid", username.OpId });
+                Script.Add(new List<string> { "fill_by_opid", username.OpId, fillUsername });
+            }
+
+            foreach(var password in passwords.Where(p => !filledFields.ContainsKey(p.OpId)))
+            {
+                filledFields.Add(password.OpId, password);
+                Script.Add(new List<string> { "click_on_opid", password.OpId });
+                Script.Add(new List<string> { "fill_by_opid", password.OpId, fillPassword });
+            }
+
+            SetFillScriptForFocus(filledFields);
+        }
+
+        private PageDetails.Field FindUsernameField(PageDetails pageDetails, PageDetails.Field passwordField, bool canBeHidden,
+            bool checkForm)
+        {
+            PageDetails.Field usernameField = null;
+
+            foreach(var f in pageDetails.Fields)
+            {
+                if(f.ElementNumber >= passwordField.ElementNumber)
+                {
+                    break;
+                }
+
+                if((!checkForm || f.Form == passwordField.Form)
+                    && (canBeHidden || f.Viewable)
+                    && f.ElementNumber < passwordField.ElementNumber
+                    && (f.Type == "text" || f.Type == "email" || f.Type == "tel"))
+                {
+                    usernameField = f;
+
+                    if(FindMatchingFieldIndex(f, _usernameFieldNames) > -1)
+                    {
+                        // We found an exact match. No need to keep looking.
+                        break;
+                    }
+                }
+            }
+
+            return usernameField;
+        }
+
+        private int FindMatchingFieldIndex(PageDetails.Field field, string[] names)
+        {
+            var matchingIndex = -1;
+            if(!string.IsNullOrWhiteSpace(field.HtmlId))
+            {
+                matchingIndex = Array.IndexOf(names, field.HtmlId.ToLower());
+            }
+            if(matchingIndex < 0 && !string.IsNullOrWhiteSpace(field.HtmlName))
+            {
+                matchingIndex = Array.IndexOf(names, field.HtmlName.ToLower());
+            }
+            if(matchingIndex < 0 && !string.IsNullOrWhiteSpace(field.LabelTag))
+            {
+                matchingIndex = Array.IndexOf(names, CleanLabel(field.LabelTag));
+            }
+            if(matchingIndex < 0 && !string.IsNullOrWhiteSpace(field.Placeholder))
+            {
+                matchingIndex = Array.IndexOf(names, field.Placeholder.ToLower());
+            }
+
+            return matchingIndex;
+        }
+
+        private bool FieldIsFuzzyMatch(PageDetails.Field field, List<string> names)
+        {
+            if(!string.IsNullOrWhiteSpace(field.HtmlId) && FuzzyMatch(names, field.HtmlId.ToLower()))
+            {
+                return true;
+            }
+            if(!string.IsNullOrWhiteSpace(field.HtmlName) && FuzzyMatch(names, field.HtmlName.ToLower()))
+            {
+                return true;
+            }
+            if(!string.IsNullOrWhiteSpace(field.LabelTag) && FuzzyMatch(names, CleanLabel(field.LabelTag)))
+            {
+                return true;
+            }
+            if(!string.IsNullOrWhiteSpace(field.Placeholder) && FuzzyMatch(names, field.Placeholder.ToLower()))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        private bool FuzzyMatch(List<string> options, string value)
+        {
+            if((!options?.Any() ?? true) || string.IsNullOrWhiteSpace(value))
+            {
+                return false;
+            }
+
+            return options.Any(o => value.Contains(o));
+        }
+
+        private void SetFillScriptForFocus(IDictionary<string, PageDetails.Field> filledFields)
+        {
+            if(!filledFields.Any())
+            {
+                return;
+            }
+
+            PageDetails.Field lastField = null, lastPasswordField = null;
+            foreach(var field in filledFields)
+            {
+                if(field.Value.Viewable)
+                {
+                    lastField = field.Value;
+                    if(field.Value.Type == "password")
+                    {
+                        lastPasswordField = field.Value;
+                    }
+                }
+            }
+
+            // Prioritize password field over others.
+            if(lastPasswordField != null)
+            {
+                Script.Add(new List<string> { "focus_by_opid", lastPasswordField.OpId });
+            }
+            else if(lastField != null)
+            {
+                Script.Add(new List<string> { "focus_by_opid", lastField.OpId });
+            }
+        }
+
+        private string CleanLabel(string label)
+        {
+            return Regex.Replace(label, @"(?:\r\n|\r|\n)", string.Empty).Trim().ToLower();
+        }
+
+        [JsonProperty(PropertyName = "script")]
+        public List<List<string>> Script { get; set; } = new List<List<string>>();
+        [JsonProperty(PropertyName = "documentUUID")]
+        public object DocumentUUID { get; set; }
+        [JsonProperty(PropertyName = "properties")]
+        public object Properties { get; set; } = new object();
+        [JsonProperty(PropertyName = "options")]
+        public object Options { get; set; } = new { animate = false };
+        [JsonProperty(PropertyName = "metadata")]
+        public object MetaData { get; set; } = new object();
+    }
+}
diff --git a/src/iOS.Extension/Models/PageDetails.cs b/src/iOS.Extension/Models/PageDetails.cs
new file mode 100644
index 000000000..004173bfc
--- /dev/null
+++ b/src/iOS.Extension/Models/PageDetails.cs
@@ -0,0 +1,52 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Bit.iOS.Extension.Models
+{
+    public class PageDetails
+    {
+        public string DocumentUUID { get; set; }
+        public string Title { get; set; }
+        public string Url { get; set; }
+        public string DocumentUrl { get; set; }
+        public string TabUrl { get; set; }
+        public Dictionary<string, Form> Forms { get; set; }
+        public List<Field> Fields { get; set; }
+        public long CollectedTimestamp { get; set; }
+        public bool HasPasswordField => Fields.Any(f => f.Type == "password");
+
+        public class Form
+        {
+            public string OpId { get; set; }
+            public string HtmlName { get; set; }
+            public string HtmlId { get; set; }
+            public string HtmlAction { get; set; }
+            public string HtmlMethod { get; set; }
+        }
+
+        public class Field
+        {
+            public string OpId { get; set; }
+            public int ElementNumber { get; set; }
+            public bool Visible { get; set; }
+            public bool Viewable { get; set; }
+            public string HtmlId { get; set; }
+            public string HtmlName { get; set; }
+            public string HtmlClass { get; set; }
+            public string LabelRight { get; set; }
+            public string LabelLeft { get; set; }
+            [JsonProperty("label-tag")]
+            public string LabelTag { get; set; }
+            public string Placeholder { get; set; }
+            public string Type { get; set; }
+            public string Value { get; set; }
+            public bool Disabled { get; set; }
+            public bool Readonly { get; set; }
+            public string OnePasswordFieldType { get; set; }
+            public string Form { get; set; }
+        }
+    }
+
+}
diff --git a/src/iOS.Extension/iOS.Extension.csproj b/src/iOS.Extension/iOS.Extension.csproj
index 1c6623935..d82db32aa 100644
--- a/src/iOS.Extension/iOS.Extension.csproj
+++ b/src/iOS.Extension/iOS.Extension.csproj
@@ -68,6 +68,9 @@
     <Compile Include="AppDelegate.cs" />
     <None Include="Info.plist" />
     <None Include="Entitlements.plist" />
+    <Compile Include="Models\Context.cs" />
+    <Compile Include="Models\FillScript.cs" />
+    <Compile Include="Models\PageDetails.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="ActionViewController.designer.cs">
       <DependentUpon>ActionViewController.cs</DependentUpon>
@@ -84,6 +87,10 @@
     <Reference Include="Xamarin.iOS" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\App\App.csproj">
+      <Project>{ee44c6a1-2a85-45fe-8d9b-bf1d5f88809c}</Project>
+      <Name>App</Name>
+    </ProjectReference>
     <ProjectReference Include="..\iOS.Core\iOS.Core.csproj">
       <Project>{e71f3053-056c-4381-9638-048ed73bdff6}</Project>
       <Name>iOS.Core</Name>
@@ -108,8 +115,6 @@
     <BundleResource Include="Resources\logo_white%402x.png" />
     <BundleResource Include="Resources\logo_white%403x.png" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Models\" />
-  </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.AppExtension.CSharp.targets" />
 </Project>
\ No newline at end of file