JMeter can record any HTTP or HTTPS requests which are going through its
HTTP(S) Test Script Recorder
If your 2 applications do network communication via aforementioned protocols you should be able to record them using the following steps:
1. Launch JMeter Proxy Server
2. Configure tablets to use WiFi rather then cellular data
3. Make sure that tablets and the host running JMeter are on the same network/subnet
4. Open port 8080 in JMeter's host firewall
5. Configure tablets to use JMeter's host as a proxy
6. Start applications and execute your test scenario
See
Load Testing Mobile Apps. But Made Easy. guide for details.