Saves will look like "5-2-LT1.save". The first number of a save indicates their page number and the second the save slot itself. So 5-2-LT1.save would be the 5th page, and save slot #2. You can find your saves in the following locations:
Windows:
Where your game folder is located, you'll have a "game" folder where the .exe is. Inside the "game" folder you'll have "saves".
Example: C:\AHouseInTheRift-GameVersionHere\game\saves
Android:
You can find your Android saves in "ahitr_storage".
Example: Internal Storage/documents/ahitr_storage.