What is the maximum number of installs of the iOS App with Watch App on a free developer account?

What is the maximum number of installs of the iOS App with Watch App on a free developer account?

I created two iOS Apps with Watch App with a free developer account and tried to install them on the actual device.
The first App installed both the iOS App and the WatchOS App with no problems.
The second app was able to install the iOS App, but the Watch App failed to install with the following error.

The maximum number of apps for free development profiles has been reached.

When I uninstalled the first Watch App from my Apple Watch, I was able to install the second Watch App.

I am aware that a free developer account can have three Apps installed at the same time.
And I thought that a pair of "iOS App with Watch App" could install three.
Could it be that I have two iOS App's and two Watch App's and the last Watch App cannot be installed?

Thanks.

Error when I tried to install the second Watch App

Code Block The maximum number of apps for free development profiles has been reached.
Domain: com.apple.dt.MobileDeviceErrorDomain
Code: -402620383
User Info: {
DVTRadarComponentKey = 487925;
MobileDeviceErrorCode = "(0xE8008021)";
"com.apple.dtdevicekit.stacktrace" = (
0 DTDeviceKitBase 0x000000011ee3b81a DTDKCreateNSErrorFromAMDErrorCode + 233
1 DTDeviceKitBase 0x000000011ee7cf70 90-[DTDKMobileDeviceToken installApplicationBundleAtPath:withOptions:andError:withCallback:]_block_invoke + 155
2 DVTFoundation 0x0000000106343f35 DVTInvokeWithStrongOwnership + 73
3 DTDeviceKitBase 0x000000011ee7cca8 -[DTDKMobileDeviceToken installApplicationBundleAtPath:withOptions:andError:withCallback:] + 1654
4 IDEiOSSupportCore 0x000000011ecf3e91 118-[DVTiOSDevice(DVTiPhoneApplicationInstallation) processAppInstallSet:appUninstallSet:installOptions:completionBlock:]_block_invoke.352 + 4165
5 DVTFoundation 0x00000001064775d4 DVT_CALLING_CLIENT_BLOCK + 7
6 DVTFoundation 0x0000000106479216 __DVTDispatchAsync_block_invoke + 1194
7 libdispatch.dylib 0x00007fff6a6a46c4 _dispatch_call_block_and_release + 12
8 libdispatch.dylib 0x00007fff6a6a5658 _dispatch_client_callout + 8
9 libdispatch.dylib 0x00007fff6a6aac44 _dispatch_lane_serial_drain + 597
10 libdispatch.dylib 0x00007fff6a6ab5d6 _dispatch_lane_invoke + 363
11 libdispatch.dylib 0x00007fff6a6b4c09 _dispatch_workloop_worker_thread + 596
12 libsystem_pthread.dylib 0x00007fff6a8ffa3d _pthread_wqthread + 290
13 libsystem_pthread.dylib 0x00007fff6a8feb77 start_wqthread + 15
);
}
--
System Information
macOS Version 10.15.6 (Build 19G2021)
Xcode 11.6 (16141)


Hi!
I installed two additional "iOS App" in an environment where I installed one pair of "iOS App with Watch App" and had no problems.
When I added another one, I was unable to install it.

So it seems that the "iOS App with Watch App" is counted as one App.

The mystery has deepened.
What is the maximum number of installs of the iOS App with Watch App on a free developer account?
 
 
Q