Hello!
Our team made our own scouting app a few years ago and it has definitely worked for us! I'm not entirely sure about all the details on how the app was made (I can definitely get information for you if needed), but it doesn't require WiFi which is usually scarce at robotics competitions. Instead, it transfers data to a master tablet using Bluetooth.
Some pros of our method, besides not needing wifi, is the fact that it compiles the data onto an excel type sheet so when we have strategy meetings at night before alliance selection, you can look at a variety of data including averages and raw data. Important data has been less likely to get lost when we use electronic scouting and is much easier to decipher.
Some problems that teams might run into is being able to get the tablets to take the data with. You'll probably need at least 6 tablets for scouting if you are planning on scouting all robots, and then the master tablet. If you do pit scouting, you may need more for that as well.
If you would like to check out the app that we use as a reference, you can download it on the Google Play Store. It's called FRCKrawler and here is a link with more information on it:
http://www.team2052.com/frckrawler/
I hope this information helped at least a little bit!
-Neely
