add requirements for Sequoia

Author: marionbarker

docs/build/build-app.md

@@ -32,14 +32,14 @@ If you are running iOS 15/watchOS 8, you do not have <code>Developer Mode</code>
 
 ### Upgrade from iOS 15 to newer version
 
-**If you upgrade an iOS 15 phone to iOS 16 or 17, the *Loop* app will not open until you enable <code>Developer Mode</code> on that phone.**
+**If you upgrade an iOS 15 phone to iOS 16 or newer, the *Loop* app will not open until you enable <code>Developer Mode</code> on that phone.**
 
 You will see a message similar to the next graphic.
 
 ![phone message if trying to run xcode app without developer mode enabled](img/phone-developer-mode-required.jpeg){width="300"}
 {align="center"}
 
-If you are running iOS 16 or 17 with watchOS 9 or newer, you must enable <code>Developer Mode</code> to run or build Loop directly from Xcode. (This is true for any app created by Xcode directly on your device.) If you want to know more, click on this [Apple Link about <code>Developer Mode</code>](https://developer.apple.com/documentation/xcode/enabling-developer-mode-on-a-device){: target="_blank" }.
+If you are running iOS 16 or newer with watchOS 9 or newer, you must enable <code>Developer Mode</code> to run or build Loop directly from Xcode. (This is true for any app created by Xcode directly on your device.) If you want to know more, click on this [Apple Link about <code>Developer Mode</code>](https://developer.apple.com/documentation/xcode/enabling-developer-mode-on-a-device){: target="_blank" }.
 
 ### Prepare your Phone and Watch
 
@@ -332,7 +332,7 @@ The first time you build, there will be steps that will not be required for subs
     3. Running
         * Wait for app to open on your phone
 
-    With iOS 17, it takes longer for the app to open on your phone after you see the "Running" message than with earlier iOS versions. Wait for it.
+    With *iOS* 17 and newer, it takes longer for the app to open on your phone after you see the "Running" message than with earlier iOS versions. Wait for it.
 
 Refer to the GIF below:
 

docs/build/computer.md

@@ -91,6 +91,19 @@ You need to have 50 GB free space in order to install Xcode as directed on the [
 
 If you are evaluating a used computer, it's best to have at least 256 GB total disk space (more is better).
 
+## Which Macs Are Compatible with macOS Sequoia?
+
+Sequoia is not yet required for building the *Loop* app on a phone running iOS 18 or higher with the *Mac* method. The normal *Apple* schedule is that you will be required to have this installed by April of the year after the *iOS* version increments. The only difference between this list and the one for Sonoma is the MacBook Air must be newer for Sequoia.
+
+* MacBook Pro introduced in 2018 or later
+* MacBook Air introduced in 2020 or later
+* Mac mini introduced in 2018 or later
+* iMac introduced in late 2019 or later
+* iMac Pro introduced in 2017 or later
+* Mac Studio introduced in 2022 or later
+* Mac Pro introduced in 2019 or later
+* get the full list from [Apple for Sequoia](https://support.apple.com/en-us/120282){: target="_blank" }
+
 ## Which Macs Are Compatible with macOS Sonoma?
 
 Sonoma is required for building the *Loop* app on a phone running iOS 17.4 or higher with the *Mac* method. You can install Sonoma on the following:
@@ -106,7 +119,7 @@ Sonoma is required for building the *Loop* app on a phone running iOS 17.4 or hi
 
 ## Older Macs
 
-Look into building with [GitHub Actions](../browser/bb-overview.md) - no need to worry about versions for Mac OS or Xcode - all done for you on GitHub (some configuration required). Works with any computer (PC or Mac or Tablet).
+Look into building with [GitHub Actions](../browser/bb-overview.md){: target="_blank" } - no need to worry about versions for Mac OS or Xcode - all done for you on GitHub (some configuration required). Works with any computer (PC or Mac or Tablet).
 
 ## Next Step: