GATT on AT-09 or HM-10?

Hey,
so I need to do some BLE stuff with the GATT protocol. For that I wanted to buy a modul.

First of all: I don't know what I am doing...so maybe this is the dumbest noob question ever asked here.

On AliExpress I saw both the AT-09 and the HM-10 but I couldn't figure out if these boards support GATT!
And that is the question: Can I use GATT with AT-09 and/or HM-10?

Regards,
Klemens

No comment on AT-90, but I believe not with HM-10. It is a very basic device, and there is no mention of GATT in the manual.

Have a look at the Arduino Nano 33 IoT.

https://store.arduino.cc/arduino-nano-33-iot

The ArduinoBLE library is easy to use and comes with a couple of examples.