It is possible to build a ipa file and load it in iPhone EVEN without a Paid Apple Developer Program Account

Prerequesites

  • Install AltServer
  • Have flutter and Using Mac

First, we build the ios app first

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flutter build ios --release --no-codesign

Find Your Payload File (Runner.app)

It should be located in the build folder if you didn’t set another path for it
While you are in root of flutter project, excute below

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cd build/ios/archive/Runner.xcarchive/Product/Applications/

Packing the application

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mkdir Payload/
mv Runnner.app/ Payload/

Archive it as an ipa file

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zip -qq -r -9 filename.ipa Payload
  • Then you have a fresh ipa file of your flutter app

Then, move(mv) to somewhere you like e.g ~/Desktop or ~/Downloads

Go to the menu bar, press the AltServer icon (Ensure you launched Altserver in the background)

HOLD the Option(For MacOS), and press Sideload ipa..

Choose the fresh ipa file you just created and volia!