The app on the Google App Store is not by us, it is a third party app. The app that downloads from https://masterpassword.app is the official app, though it is very minimal at this point.
If the official app generates different passwords for you than the app you found on the Play store, there is likely an issue with the Play store app. You should contact the author of that app to diagnose the issue.
I agree that it's a little confusing. Master Password is open-source, and as such, devland has made his own version of the app based on my Java code. Since the official Android version is still very minimal, I haven't published to the store yet, giving devland the upper hand there.
I can't speak to devland's application, its implementation and its security; that's a matter between yourself and devland, and his job to convince you of. I can only recommend that you contact him and see what his take on this issue is.
Let me know if there's anything else I can do to assist with this issue or any other.
Lhunath, This is crazy.
I have your software running on my Mac and iPad. I know because it has you thanks.lhunath.com name on it and my Gmail.com password is the same on both devices.
I downloaded your software from MasterPasswordapp.com for Android on my Samsung G8 and I get this (picture). It looks different from the other two apps and the password for Gmail.com isn't matching up.
I get "GuyeLote1!Tikj" if I enter the name with a capital T: "Test" instead of as a lowercase "t": "test".
This looks like it might be what's tripping you up, then. Both the Android and iPad device keyboards are likely have the shift ON for the first letter automatically, making it capitalized, where the Mac doesn't do that.
It's imperative that all the information is the same, so try using just a fully-lowercased "test" for all values, to see if this is what's causing the issue for you.