Why can I not install more than three apps?

Question

I have just started learning how to make iOS apps, and am using the free personal developer account.

I have made four apps so far, but do not seem to be able to inst

Answer 1

For me by removing unnecessary provisioning profiles from the device.

1. In the Xcode go to Window → Devices and Simulators.
2. Right click the device you are unable to install app.
3. Delete some provisioning profiles.

Clean App and then run will work.

Answer 2

I faced issue when I have many out of date apps in test device, like that:

So I tried:

Step 1: Connect to test device

Step 2: Window -> Devices and Simulators -> Select test device

Step 3: Click Open Console

Step 4: Build App in test device

Step 5: Paste MIFreeProfileValidatedAppTracker to Search input

Step 6: Update or delete these apps with bundle id in list:

[MIFreeProfileValidatedAppTracker _onQueue_addReferenceForApplicationIdentifier:bundle:error:]: 182: This device has reached the maximum number of installed apps using a free developer profile: {(
    "bundle id 1",
    "bundle id 2",
    "bundle id 3",
    "bundle id 4"
)}