What is Reddit's opinion of APK Editor?

You have at least two options here:

1) APK Editor (works for not rooted phones also); free version should suffice;

2) Xposed framework and Xposed modules only if you're rooted.

You can get one module for renaming, like XRenamer - I've already provided the link and one module for changing icons, like Xposed Flipster Icon Changer.

I bet there are many other apps that can change names and icons. Search for them in the google playstore.

If you are not rooted, go for APK Editor.

I updated my mod to v2.8.7.5 but I still haven't found out how to disable the update check.. Editing the version number using APK Editor so it matches the current one works for removing the update notification. Just so you know :)

I don't think it has to do with Android 6.0. I'm not having this issue on my 6.0 tablet so I think it's Mibox specific. Weird problem, haven't seen this before. If you can find an older version that doesn't have this problem but won't load content you may be able to fix this by raising the internal version number using APK Editor. You can also try to contact the developer on Facebook but I'm skeptical if he/she will help..

Sure. Most applications can be edited in some way, but there are a few that cannot. It depends if the developer allows for the app to be debugged. Facebook, for example, generally can't be modified. You can download something like APKeditor on google play, if you want to do simple things. Edit images, change text, edit the manifest, etc. If you are looking for more complex operations, like smali/baksmali, then you would need to use a PC.

Edit: APKeditor actually supports smali.

You can't, well, not directly anyways - without a themeing engine, or Xposed, the only way to change the icons system-wide would be to edit the apk / resources for the apps that you want to change the icon for. You could use APK Editor to do this, but it will become tedious to keep updating the APK every time the app gets updated...

Depends on what you mean by "silent".

Notifications? Easy, just go to app info and toggle.
Sound? If the app has an option to choose a sound file for notifications, just choose a muted sound file (create it or search for one). If it doesn't, well... you'd have to find the file inside the APK and replace it, then install the one you made.
Vibration? Again, edit APK and find the vibration permission, remove it. Or if you use CyanogenMod, XPrivacy or something similar, just revoke the vibration permission.

Found an app in the playstore called APK Editor. (https://play.google.com/store/apps/details?id=com.gmail.heagoo.apkeditor&hl=en)

Using this I was able to edit the APK package of an app so it's name and icon where whatever I wanted. Downside is you would have to re-do this if you update the app, but it was really simple. After editing, it actually recreates the apk in another folder and you have to install that (and uninstall the unedited version first)

oh i have already done its just so if people wanted to edit the app your self

1) download this https://play.google.com/store/apps/details?id=com.gmail.heagoo.apkeditor&hl=en
then select apk from app "FULL EDIT"

2) you want to extract the "app.js" file in assets folder and edit it on your computer to look something like this http://www.filedropper.com/app_17 find where the charters and vehicles are and change id with new ids (im really lazy and just change the numbers instead of adding new lines)

3) replace the app.js file with the one you have edited then save and install the app also note you can only have one version of the app on your device at a time.

a few notes you might want to install notepad++ to edit the file

also if you just want the wave 7 stuff you can use my rough build apk but i didnt change the names so batman=newt, gandalf=sonic etc. Sonics car is police car,Sonics plane is Gravity Sprinter and fun fact the rest of the wave 7 vehicles are already on the app there were some gaps in between the wave 6 vehicles were it just says "future update" those are the rest of the wave 7 vehicles.

http://www.filedropper.com/base_10

If you're interested in doing this yourself I'll be glad to get you started.

You can begin decompiling and recompiling apk files using this mini tutorial. Unfortunately AnimeDLR is not the easiest target for modding because it won't just recompile using APK Studio (which uses ApkTool).

A great way to learn from others is decompiling the original apk and the modded apk and comparing the decompiled files using WinMerge.

You can also do some basic editing using APK Editor for Android.

https://forum.xda-developers.com/android/apps-games/app-apk-editor-pro-edit-apk-files-t3747376

https://play.google.com/store/apps/details?id=com.gmail.heagoo.apkeditor

Try those

It has to be an APK installer. such as https://play.google.com/store/apps/details?id=com.gmail.heagoo.apkeditor&hl=en
This is the one I use.