Since you want a programmer to code an app for you, try the programming
or [computer] language newsgroups. Since you included Samsung
(smartphone) groups, likely you want an Android app. There is no
*.(programming|lang).android newsgroup. The official programming
language for Android development is Java. I've heard of some coders
using Kotlin, an alternative IDE to write apps in Java. Apps can be
written in C and C++ using the Android Native Development Kit (NDK), but
Google doesn't promote that coding venue. Perl and HTML can be used.
https://www.geeksforgeeks.org/top-programming-languages-for-android-app-development/
Try the *.java[.*] newsgroups. Likely you'll get more responses if you
indicate you will pay for their work. They'll also want to know just
WHAT you want the app to do. A wanted "app" tells them nothing.
-----------
Note:
I only happened to see your post when selecting the All Messages view
mode (which will show messages that have been ignore flagged by my
rules). Altopia (
alt.net) lets its users preload the PATH header with
whatever string the user wants. They require
alt.net be appended to
their string (to show
alt.net was the injection node), but they don't
enforce it by checking the PATH header. As such, forgers can prepend
any string into the PATH header, so they can lie about the source of
their message. As such, and because the injection node is unknown for
any message that originates at
alt.net or appears to pass through
alt.net, I don't trust any of those messages, and they get flagged as
Ignored (which my Hide Ignored default view will not show).
The peering isn't your choice. I just don't trust any message that
originates from
alt.net or anything purporting to originate elsewhere
and passes through
alt.net (since nothing before the "
alt.net" node in
the PATH header can be trusted). Altopia is irresponsible in allowing
its users to customize the injection node. They should disable that
feature (since only forgers use it) or have their server verify the
resultant PATH header in a submission obeys their requirement that
alt.net be identified as the real injection node.