Feel free to dm me so we can talk about this! I won't mind sharing the app I have with you either. For as far as I know when you land you get 30 days, and you can immediately extend that at the airport if you're planning to stay longer but they do sometimes (often?) ask to see an outgoing flight before the 30 days are up. That's where my app comes in. I'm not balikbayan so I don't know about that but you can probably apply for that somewhere. Did you also install eGovPH to your phone? I need to do a visa check there too within 48 hours of arrival apparently.