hello ,
This is my App recently launched .
but i am receiving low star rating due to some error (cant open app , App crash )
Please check …is it showing error or crashing in your device ?
If users can’t open your app then fix it.
but i dont know what exactly causing problem in App
i have 5 android phones …App is working fine in my all devices
Is it working on your device ?
thanks a lot… to find error 
how can i fix it ?
what are the reasons ?
Maybe your app icon is too big.
But if you’re serious about getting help you’ll need to post blocks such as Screen1 Initialise and screenshots of your designer.
(As it’s a published app on the Play Store it’s best not to post your aia, although it’s entirely up to you.)
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Check out your assets sizes… and see also if you have a looping procedure, specially when you are calling too much function during users activity maximize other function by creating procedure, or maybe check if you do screen switching correctly, you have a RAM issue, if you feel your app is so heavy, better to minimize blocks. I suggest test your app also in Firebase Test Lab, to check how it will behave in other device brands/model.
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Search the community. This has been asked before.
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thank you
you help me a lot
now trying to fix these problems
icon resolution is 512*512
and should i compress size of icon ? ( icon is 250 KB now ).
update please check it again
- Icon size compressed
- removed assets (that are not important )
- blocks minimized
Except Kodular what other services are you using
Show your blocks etc.
How many red errors do you have in total?
using these services
- hosting - Gdrive , cloudnary, Pcloud .
- not using Firebase
- Deephost extension - custom list view
- Spreadsheet
- fb ads
See here:
i am not using native ads… 
4 error
you can see those blocks in image
What happens when you fix those errors?