When looking for the hardware working principle, yes – the printed case is the only difference. The Application Kits are based on the BITalino Core (Bluetooth) device.
All the Application Kits are assembled in the 3D-printed casing and the sensor & accessories selection is based on the final application (e.g. for Electrocardiography (ECG) data acquisition, we designed the HeartBIT which is completed with assembled ECG and Photoplethysmography (PPG) sensors).
This can be highly convenient for some Biomedical applications where the customer intends to have a simple set-up and doesn’t want to work directly with a PCB.
The working principle of all Application Kits is exactly the same as using the “PCB-uncovered” devices, such as those included in (r)evolution Plugged Kits. The Assembled BITalino Core provides raw data that can be saved as .txt, .h5 and .edf file format in the Opensignals software.