I agree about watering when dry, and the utility of a moisture meter in figuring out the right watering interval.
You want the soil to go properly dry at depth (or nearly so) but there is no advantage in allowing it to stay dry for any extended period, unless dormancy is your goal. What tends to happen with water deprivation is similar to what you're observing with your aloe (tip burn and dieback).
My advice for growing aloes would be to give them as much light as possible (some of these whitish plants might not like a lot of direct sun, but bright light is key). Indoors that means right by a window which gets daily sun. (Window glass cuts the UV so indoor sun is kinder than outdoor sun.) The exposure helps ensure that the soil dries out faster (direct and indirect effects), so overwatering is less likely to be a concern. My mix is about 50% pumice, which helps in that regard too.
