The Nordic Thingy:52 reference design includes firmware source code, documentation, hardware schematics, and layout files.
To obtain the firmware package, go to the Thingy product page.
The web app is available through the Eddystone beacon that is advertised by the Thingy, unless you have changed the default Eddystone beacon configuration.
For more information, see Getting started.
The zip file and its subdirectories contain the hardware design files for the Nordic Thingy:52 reference design. The hardware files for the circuit board are located in the following folder in the hardware files zip package:
\Thingy52 - Hardware files x_x_x\PCA20020-Thingy52 Board x_x_x.