OnlyCat - Microchip Cat Flap with Prey Detection
OnlyCat - Microchip Cat Flap with Prey Detection - Image 2
OnlyCat - Microchip Cat Flap with Prey Detection - Image 3
OnlyCat - Microchip Cat Flap with Prey Detection - Image 4

OnlyCat – Microchip Cat Flap with Prey Detection

(618 customer reviews)

Price range: £ 275.00 through £ 499.00

Let cats in, keep mice out.

Microchip access in both directions, individual curfews and prey detection—all controlled through one app.

Fits a 165 × 172 mm opening, or a compatible circular glass cutout. Check fit details

Mounting
Where will it be fitted?
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Mounting Adaptor See all sizes and shapes →
Tunnel Extender – 50mm £ 10.00 Details ↗
Power cable

A 3 m power cable and adaptor are included. Mains power is required.

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USB-C Extension Cable — 1m £ 12.00 Details ↗
USB-C Extension Cable — 2m £ 18.00 Details ↗
USB-C Extension Cable — 5m £ 25.00 Details ↗
Optional extras
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Before you order

In stock · typically ships in 2–3 working days · secure payment

SKU: OC-1000 Category:

Wild outside. Calm inside.

Let cats be cats — and keep what they catch outside.

  • Your cats, in and out. OnlyCat reads your cats’ microchips or compatible collar tags on entry and exit. Choose who may come in, who may go out and when, cat by cat.
  • A decision in the blink of an eye. OnlyCat checks for prey on the flap itself, typically in 0.2 seconds—even after dark.
  • See what happened. Review arrivals, departures and detected prey attempts, with videos, notifications and household sharing in one app.
  • Designed and built in the United Kingdom. Tested before it leaves us, with a two-year warranty and 30 days to try it at home. Read our returns and warranty policy.

“I feel so much better.”

  • “A device that’s given me my life back. Free to finally enjoy outings and holidays without worrying.”

    Fatima B.

  • “Our cat tried 16 times to bring a gift in. Waking up to see we avoided midnight carnage is just amazing.”

    Sarah C.

  • “I love my cat but I couldn’t cope with the presents. The flap did exactly what it was supposed to.”

    L Porquoi.

Rated 4.8 on Trustpilot by owners. Read owner reviews

618 owner reviews4.88/5

  1. Sophie Davison – Google

    Works great for my two cats

  2. Frank Sanders – Google

    Excellent thus far – no contraband in the house since we installed it. It has removed this stress for my wife

  3. Stefan Westberg – Google

    Best flap!

  4. Ingo Knöll – Google

    Best cat door on earth! Doors which are detecting chips you find some, but one where you can define rules and regulations are rare and even rarer are those detecting mice and birds in your cats mouth! It does it 100%!
    No bloodbath at home anymore!
    Its not for overweight or big cats! Ours is about 5.5Kg and passes easily.

  5. JIM HOYLE – Trustpilot

    Game changer.

    This catflap has honestly changed my life! It was way too expensive for me but I don’t regret the investment. My cat was bringing mice home everyday and sometimes twice. After installation it stopped him every time. I also realised from the built in camera that other cats were trying to get in too. My cat continued trying to bring mice home for a long time but it’s been a couple of months now since the last attempt, so I’m hoping he’s finally given up! xD

  6. Natalia Ialama – Trustpilot

    Saved my life!!!!

    Saved my life!!!!
    No more mice in the house!
    Best gift ever! Worth all the money. Thank you!

  7. Sophie Tanith Davison – Trustpilot

    Works great

    Works great, had it for maybe 3-4 months now. I have two cats, both microchipped, who try to bring prey into the house and I’ve had no issues since installing the cat flap. The technology is great, it works better than I could have hoped! I was reticent for the price but I do think it’s worth it.

  8. paul clarke – Trustpilot

    This thing just works!!

    This thing just works!!! Full stop. Our cat used to bring wildlife in almost every day but now it has completely stopped! Brilliant… a life changer for us!

  9. Abi Thom – Trustpilot

    Genuinely fantastic

    Genuinely fantastic.
    We had a few teething issues and problems with the flap reading the microchips of our cats so had to wait for some updates before we got the full use but it was so worth it. No more waking up to headless animals deposited around the house!
    The new app update has been well received too, easily see who is in and out along with who is trying to get in but ought not to be. Helped us track down one of our neighbours lost cats as we had her trying to get into our flap!
    We get a few false alarms for contraband in the height of summer but the flap is installed in a south facing door so it’s purely the glare from the sun, it resolves when the cat tries again and it’s a small niggle for the peace of mind.
    Superb investment, worth the cost and would highly recommend – so glad we took the chance on the crowdfunding!

  10. klasu kcm – Google

    Works perfectly and reliably

    Translated from German by Google

    Show the original

    Funktioniert tadellos und zuverlässig

  11. thomas b. – Google

    An extraordinary cat flap. My cat is an exceptional hunter. We constantly had mice and birds in the house. Now, nothing. I recommend it without reservation.

    Translated from French by Google

    Show the original

    Chatière extraordinaire. Mon chat est un chasseur hors pair. Nous avions constamment des souris et oiseaux dans la maison. Depuis plus rien. Je recommande sans reserve

  12. Ronald van Klaveren – Google

    OnlyCat is the invention of the century! Cats inside, prey not. Works 100%

    Translated from Dutch by Google

    Show the original

    OnlyCat is de uitvinding van de eeuw! Katten wel binnen, prooi niet. Werkt 100%

  13. Torgny Lindholm – Google

    Best cat flap ever. So far, it has stopped eight attempts to bring mice—and on one occasion even a bird—into our house. It has never failed. The best part is that our cats are slowly learning that contraband is simply not allowed indoors. Absolutely worth the wait 😊 …

  14. Chris Lowe – Google

    Life changing for my wife. No more presents!

  15. Peter Ritchie – Google

    This product really works! It was easy to set up because we already had the compatible cat flap installed so it was a direct swap. The electrical supply, with a bit of stick-on ducting took a little planning but works well.
    The unit reliably detects all the unwanted creatures and denies the cat entry when one is detected. So far it is infallible – stopping four illegal entries on one day alone.
    The App based system is very easy to use and is helpful.
    It’s expensive, but I would strongly recommend this product. It has removed a constant source of hassle & worry about dealing with a constant invasion of unwanted wildlife into our house.

  16. C. de Bruijne – Trustpilot

    I am a complete fan

    I am a complete fan, the purchase of this product was completely worth it! No more "presents" brought into the house, a view of unwanted visitors (the neighbour's cat), and we can keep an eye on whether and when the cats come in and go out again (even when we are away on holiday ourselves). That gives a great deal of peace of mind, and both the device and the app work perfectly 🙂
    As far as I have experience of customer service (payment failed at my end and I still paid twice), it was resolved properly.

    Translated from Dutch

    Show the original

    Ik ben helemaal fan

    Ik ben helemaal fan, aankoop van het product helemaal waard! Geen meegebrachte ‘cadeautjes’ meer in huis, zicht op ongewenste bezoekers (de buurkat), en we kunnen (ook als we zelf met vakantie zijn) in de gaten houden of en wanneer de poezen binnen komen en weer naar buiten gaan. Dit geeft heel veel rust, en zowel het apparaat als de app werken perfect 🙂
    Voor zover ik ervaring heb met de customer service (betaling werkte niet van mijn kant en toch dubbel betaald) adequaat opgelost.

  17. Karen – Trustpilot

    I have had this fitted for about 2…

    I have had this fitted for about 2 months now. It has been a life saver. So far has stopped 8 presents from my two cats.
    I was a bit reluctant due to the price but has been totally worth it.
    App is good and easy to use. Has only blocked cats only once thinking it had something in his mouth but he didn’t. Overall so far so good.

  18. Thorsten S – Trustpilot

    While still beeing a start-up the app…

    While still beeing a start-up the app is already working very good and is always getting better. No issues with the hatdware at all.

  19. Andrea Mullen – Trustpilot

    This has saved us so much stress

    This has saved us so much stress, no ‘presents’ have made it past the Only Cat flap! Wish I bought one earlier. Sooo good. Loved seeing the videos too.

  20. Neil Gregory – Trustpilot

    Excellent cat flap

    Excellent cat flap. Keeps the bad stuff out.
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