Best Microchip Cat Flaps in 2026 (Compared)

For most homes in 2026, the SureFlap Microchip Cat Flap Connect is the best microchip cat flap: it reads your cat’s existing chip in both directions, so you can keep one cat in while another goes out, set curfews and get in-and-out alerts from a free app. If you don’t need the app, the standard SureFlap does the core job on four AA batteries — and if your cat brings prey home, OnlyCat adds camera-based prey detection.

A flap that opens for anything with whiskers invites in the neighbour’s tom, the local fox and, at 3 a.m., whatever your own cat caught in the garden. A microchip cat flap solves the first two; the newest smart cat flaps go after the third. We compared the main models on who they let in and out, how they are powered, what the app adds and whether they fit your door, using manufacturer specifications, manuals and owner reports.

Entry-only or dual-scan: what does a microchip cat flap actually do?

Every flap here reads the ID chip your vet already implanted (or an RFID collar tag) and unlocks only for registered cats. What matters is where it reads. Entry-only flaps — the standard SureFlap, PetSafe and Cat Mate — check the chip on the way in and let any animal out: intruders stay out, but you cannot keep one particular cat inside. Dual-scan flaps such as the SureFlap Connect and OnlyCat read in both directions, so permissions are set per cat: the new kitten or the cat recovering from surgery stays in, the healthy adult keeps its garden. In a multi-cat home, that feature usually decides the purchase.

Best microchip cat flaps at a glance

Cat flap	Best for	Reads chip	Power	App	Cats stored
SureFlap Microchip Cat Flap Connect	Best overall	In and out	4 × AA	Yes, via Hub	32
SureFlap Microchip Cat Flap	Best without an app	Entry only	4 × AA	No	32
PetSafe Microchip Cat Flap	Best on a budget	Entry only	4 × AA	No	40
Cat Mate Elite with Timer Control	Curfews without an app	Entry only	4 × AA	No (LCD)	9
OnlyCat	Cats that bring prey home	In and out	Mains + backup battery	Yes, Wi-Fi	No limit
SureFlap Microchip Pet Door	Large cats, small dogs	Entry only	4 × C	Connect version	32

Prices vary widely between retailers and regions, and bundles with a hub or glass adaptor change the total — check the current price before ordering rather than trusting a figure in any review.

Best overall — SureFlap Microchip Cat Flap Connect

The Connect answers the most household problems at once. Two-way reading gives each cat its own exit permission, and a curfew locks the way out at set times while still letting cats come home. The free Sure Petcare app notifies you whenever a cat comes or goes and lets you lock the flap remotely — handy before a vet visit. The catch is the Hub, which needs a spare Ethernet port on your router. One Hub runs up to ten Sure Petcare devices, including the SureFeed microchip feeder, and the flap stores up to 32 pets. See it on Amazon or at Sure Petcare.

Best without an app — SureFlap Microchip Cat Flap

If all you want is to keep the neighbour’s cat out of your kitchen, the standard SureFlap (sold as the Microchip Cat Door in the US) is the proven choice. It reads 9-, 10- and 15-digit chips — which matters if your cat was chipped years ago in the US — stores 32 identities that survive a battery change, and Sure Petcare rates it at up to 12 months on four AA batteries. The manual lock includes an in-only mode for the evening. It checks chips on entry only, so if you later need to keep one cat indoors, the app-free SureFlap DualScan adds two-way reading without a Hub. Check the current price on Amazon.

Best on a budget — PetSafe Microchip Cat Flap

The PetSafe does the entry-only job for less, with a four-way manual lock (in and out, in only, out only, fully locked) and room for up to 40 registered pets — more than any other battery-powered flap here. It runs on four AA batteries. PetSafe specifies 15-digit chips, so if your cat carries an older 9- or 10-digit US chip, check compatibility first or plan on a collar tag. See it on Amazon.

Best for curfews without an app — Cat Mate Elite with Timer Control

Cat Mate, now sold under the Closer Pets name, makes the one flap here that sets a curfew without a phone. A built-in timer locks the flap overnight, and an LCD shows whether each of the first three registered cats is in or out and how long ago it last used the flap. It stores up to nine cats, self-lines doors up to 100 mm thick and runs on four AA batteries. Two limits: it is entry-only, and the timer applies to every cat, so it cannot keep one indoors while another roams. Available on Amazon.

Best for cats that bring prey home — OnlyCat

If the real problem is the mouse your own cat drops behind the fridge, look at prey detection. OnlyCat is a dual-scan microchip flap with a night-vision camera: when your cat arrives carrying something, it pauses entry and sends you the clip, then lets the cat in once the prey is left outside. Per-cat rules and curfews are included, there is no limit on the number of cats, and it fits SureFlap-sized openings, so it can replace an existing SureFlap without new cutting. It needs mains power (a USB-C cable, with a small backup battery so it locks or unlocks safely in a power cut) and Wi-Fi for setup. It comes as a one-time purchase or a cheaper-upfront subscription version with identical hardware — the latter stops working without an active plan. Designed for cats up to 6 kg. Buy it direct from OnlyCat.

Two alternatives: Flappie, a Swiss flap sold in Switzerland and the EU, runs prey detection on the device and can recognise cats by face (its Cat ID feature) instead of by chip. ZeroMOUSE is an add-on camera that stops an existing SureFlap, PetSafe or Closer Pets microchip flap unlocking when your cat is carrying something.

What about big cats and small dogs?

Standard microchip flaps open to roughly 14 × 12 cm, which is tight for a Maine Coon and useless for a terrier. The SureFlap Microchip Pet Door opens to about 17 × 18 cm, keeps the same 32-pet memory and chip compatibility, runs on four C cells, and comes in a Connect version if you want the app. Check the current price on Amazon.

Before you buy: chips, doors and fit

Three things cause most returns. Chip compatibility: run your cat’s chip number through the manufacturer’s online checker before ordering. Your door: metal and metal-skinned doors weaken the reader’s signal, and a chip that has migrated under the skin can read inconsistently — an RFID collar tag solves both. For glass, SureFlap and OnlyCat need a circular cut-out of roughly 212–260 mm, which a glazier has to make. Training: wedge the flap open with the lock off for the first sessions and reward every pass, especially with flaps that need a firm head-push.

A cat flap is the access layer of a wider setup — see our complete smart pet care setup guide for how it fits with feeding, tracking and monitoring. If you already run a SureFeed from our best smart pet feeders guide, a Connect flap shares its Hub and app. For cats that roam beyond the garden, our GPS tracker comparison covers the collar side.

The bottom line

Buy the SureFlap Connect if you have more than one cat or want curfews and alerts on your phone; the standard SureFlap or the PetSafe if you simply want other animals kept out. Choose the Cat Mate Elite for an app-free curfew, OnlyCat if prey is the problem, and the SureFlap Pet Door for a big cat or small dog. Whatever you pick, check the chip and the door before you drill.