Both types of feeders save you from refilling a bowl by hand, but they suit different pets and routines. Here is the honest difference.

How a gravity feeder works
A gravity feeder holds a reserve of food and refills the bowl automatically as your pet eats. You fill it once, and it lasts for days depending on how much your pet eats.
When a gravity feeder is a good fit
It works well for pets that graze a little at a time, for busy days when you are out, and for households that want one less daily chore. It is simple, with no settings to program.
The trade-off to know
A gravity feeder does not control portions. If your pet eats everything in sight, food will keep coming, which can lead to overeating. For pets that need strict portions, a timed feeder that dispenses measured meals is the better choice.
How to use a gravity feeder well
Fill it with the amount you want your pet to have over a set number of days, not to the very top by default. Watch how fast it empties in the first week, and adjust from there.
A gravity option to look at
Our Automatic Gravity Pet Feeder keeps food available without daily refills, so it suits pets that graze and owners with busy schedules. You can see it here: Automatic Gravity Pet Feeder.
The bottom line
Choose gravity for simplicity and grazing pets. Choose timed and portion-controlled feeding if your pet overeats or needs measured meals. If you are unsure about portions, your veterinarian can help you work out the right daily amount.

