Hi there
Merging two app normally has no hard or challenging issue , we can export one of the as an module and import in other [login to view URL] the important thing is to make sure of resolving any conflicts remains.
We have a team of experienced Designers & Developers who would be glad to help you shape your requirements into products.
Also, we support the app and fix bugs for 6 months so don't be worry about future bugs.
Hope to hear from you soon.
Thanks, best regards
Mahmoudreza