Check the in-game money display
After hatching a pet, look for the money or pet information shown in the current interface. Use that display to understand your own progress rather than relying on a third-party calculator.
Connect income to available upgrades
The game also describes upgrading to lift bigger rocks. If pet earnings contribute to your available money, check the upgrade menu and compare its displayed costs with your balance.
Avoid unsupported income claims
No official rate, offline-earning rule, stacking formula, or pet income table appears in the public listing. Do not assume earnings continue while away unless the current experience confirms it.
Track version-specific observations
For your own comparison, note the pet, displayed income, and date or game update. Treat these as observations from your session, not universal developer-published rates.