As an Amazon Associate I earn from qualifying purchases. Picks are based on manufacturer specs, independent reviews and owner reports.
Our top picks
Short on time? Our top recommendation is the PetSafe Smart Feed Automatic Dog & Cat Feeder.
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At a glance
The traits that separate these picks, side by side.
In depth
The 6 best, explained
Why each made the cut, where it falls short, and who should buy it.
PetSafe
And slow Feed setting addresses fast eating alongside portion control. One caveat, no mechanism to stop a housemate pet from also eating the diet cat's portion.
- Portions from 1/8 cup to 4 cups per meal
- Up to 12 scheduled meals per day
- Slow Feed setting releases food over about 15 minutes
- App alerts when the hopper is running low
- 24-cup / 6L capacity
✓ Pros
- 1/8-cup increments allow closer matching to a vet-prescribed portion than half-cup feeders
- Slow Feed setting addresses fast eating alongside portion control
- Frequent small meals (up to 12/day) can be programmed to reduce begging between feedings
✕ Cons
- No mechanism to stop a housemate pet from also eating the diet cat's portion
- Auger accuracy can drift with very small kibble or crumbly diet formulas
- Requires periodic manual verification against a measuring cup
SureFeed
Guarantees the diet cat's bowl stays off-limits to a food-motivated housemate
- Microchip and RFID collar tag recognition
- Sealed lid prevents access between registered visits
- Training mode for gradual lid-opening introduction
- Suitable for both wet and dry prescription diets
✓ Pros
- Guarantees the diet cat's bowl stays off-limits to a food-motivated housemate
- Sealed lid also keeps wet prescription food fresher between small meals
- 3-year warranty reflects durability built for daily long-term use
✕ Cons
- Doesn't measure or schedule portions on its own; portioning is still manual per fill
- Connect app features need a separately sold hub
- Higher price than a standard hopper feeder
Cat Mate
Pre-portioning each of the 5 compartments by hand guarantees exact serving sizes, no auger drift possible
- 5 individual pre-portioned compartments
- Digital timer with an initial feed plus 4 scheduled meals
- Included ice packs keep wet food cold for hours
- Runs on 3 AA batteries
✓ Pros
- Pre-portioning each of the 5 compartments by hand guarantees exact serving sizes, no auger drift possible
- Ice packs make it genuinely usable for a wet-food weight-management diet, not just dry kibble
- Lower price than an app-connected feeder for a single diet cat
✕ Cons
- Caps out at 5 meals total before it needs refilling and resetting
- No app, so there's no remote alert if a meal fails to dispense
- Manual pre-measuring is more hands-on than an auger feeder's automatic portioning
PETLIBRO
The button version of PETLIBRO's Granary schedules up to 6 meals a day without an app or Wi-Fi.
✓ Pros
- No app or Wi-Fi needed; set it on the unit
- Up to 6 meals a day with small 20 ml portions for portion control
- Runs on D batteries as power backup
- Large 5-liter hopper
✕ Cons
- No remote monitoring
- Dry food only
- Programming via buttons is less intuitive than an app
Closer Pets
Five separate covered bowls let you split a day's wet or dry food into timed portions.
✓ Pros
- Five timed meals for portion control
- Works with wet or dry food
- Stainless steel bowls
- Tamper-resistant lid
✕ Cons
- Small 330 g per bowl
- Bowls need refilling individually
- Battery powered
Cat Mate
A battery feeder that dispenses up to three measured dry-food meals a day.
✓ Pros
- Portion-controlled meals
- Battery powered
- Simple digital timer
- Dishwasher-safe bowl
✕ Cons
- Dry food only
- Small capacity
- No app or alerts
How we chose these picks
This shortlist is the product of research, not advertising. We cross-checked manufacturer specs against independent reviews and long-term owner feedback, then ranked by value for real use cases.
Mistakes buyers often make
- Buying on brand name alone instead of matching features to your actual use case.
- Overpaying for headline specs you'll never use, define must-haves first.
- Ignoring size — compatibility, and ongoing costs (filters, accessories, refills).
- Trusting star ratings without reading what owners compla in about after 6 months.
How to choose: the factors that matter
- Capacity and sizing — Measure your space and your actual use before falling for bigger-is-better. The right size is the one that fits your routine, not the spec sheet's maximum.
- Build quality and materials — Heavier-gauge materials, tight tolerances, and solid joints outlast thin, rattly construction. In reviews, look for longevity comments over first-impression praise.
- Ease of use and setup — Clear instructions, intuitive controls, and minimal assembly separate daily drivers from garage ornaments.
- Maintenance and cleaning — Whatever you buy will need cleaning. Removable, dishwasher-safe, or wipe-clean parts get maintained; fiddly ones get neglected.
- Warranty and support — A multi-year warranty signals the manufacturer expects it to last. Check what's actually covered, motors and frames matter more than accessories.
The bottom line
There's no single 'best' here, only the best match for your situation. Start from your must-have features, then choose the least expensive pick that covers them.
FAQ
Common questions
What are the best automatic pet feeders for cats on diets right now?
Our top pick is the PetSafe Smart Feed Automatic Dog & Cat Feeder (our top pick), because 1/8-cup increments allow closer matching to a vet-prescribed portion than half-cup feeders. The runner-up is the SureFeed Microchip Pet Feeder Connect, followed by the Cat Mate C500 Digital 5-Meal Automatic Feeder.
Is the PetSafe Smart Feed Automatic Dog & Cat Feeder worth it?
For most buyers, yes. It ranks #1 in our automatic pet feeders for cats on diets research, though no mechanism to stop a housemate pet from also eating the diet cat's portion.
What portion size accuracy matters for a cat on a weight-loss diet?
Look for feeders that dispense in fractions smaller than a full cup. The PetSafe Smart Feed portions from 1/8 cup up, which matters for cats prescribed 1/4 or 1/3 cup per meal rather than a rounded 1/2 cup. Auger-style dispensers are generally more consistent gram to gram than gravity-drop designs, which can clump and release unevenly.
Will a microchip feeder stop my cat from eating a housemate's prescription food?
Yes, that's the ma in use case for the SureFeed Microchip Pet Feeder. It only opens for the pet whose microchip or collar tag is registered to it, which is the most reliable way to keep a diet cat away from a housemate's higher-calorie food and vice versa.
How often should I recalibrate portion sizes on an automatic feeder?
Check the actual dispensed amount against a measuring cup every 2 to 3 weeks, especially after switching food brands or bag sizes, since kibble density varies and can throw off volume-based portioning even when the feeder's settings haven't changed.
Can a feeder help slow down a cat that eats too fast, not just too much?
Slow-feed settings that spread one portion's release over several minutes, like the PetSafe Smart Feed's Slow Feed mode, address both eating too fast and eating too much, since a cat that eats slower and gets no free access to a hopper tends to eat closer to the prescribed amount.
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