Comparison

Inverter vs OnlyCat

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Inverter

Monitor and manage your GivEnergy inverter(s) with this straightforward application. It allows for independent control of up to three connected inverters. Resetting IP addresses is easily managed through the iOS Files app.

Highlights
  • Monitor inverter status
  • Control inverter settings
  • Connect up to three inverters
  • Independent inverter management
  • IP address reset via Files app
Features
Read full description

This simple app allows you to monitor and control your GivEnergy inverter(s). They should have static IP addresses, set either in the inverter itself or in your router. Up to four inverters may be connected, but the app treats them entirely independently, not as a 'plant'. To force the app to request the IP address(es) again open the iOS 'Files' app, select 'On your iPad/iPhone' then 'Inverter' and delete the file inverter.dat. For more information visit https://www.bbcbasic.co.uk/inverter/

About

OnlyCat

This advanced cat flap uses AI to detect and prevent prey from entering your home. It offers selective access control for each pet, real-time notifications, and allows for timed curfews. Manage multiple cats and track their activities with personalized profiles and video highlights.

Highlights
  • AI prey detection
  • Selective access control
  • Smart notifications
  • Multi-cat management
  • Timed curfews
  • Activity tracking
  • Personalized cat profiles
Features
Read full description

Wild outside. Calm inside. Your cat comes and goes. OnlyCat watches the door — you don't have to. The flap sees every arrival, recognises every cat, and when someone tries to bring home a "gift" — a mouse, a bird, whatever tried its luck — the door quietly says no. You sleep through the night. You leave the house. The hallway stays clean. And every morning you can see exactly what happened while you weren't looking. PROTECT THE HOME • Prey detection stops contraband at the threshold — the flap simply doesn't open. • Review the evidence later: every event on video, from routine transits to heroically thwarted deliveries. • Contraband detected. Crisis averted. FREEDOM FOR THEM • No collars, no compromises: recognises your cats by their microchips. • Rules per cat: who may go out, who may come in — and when. • Unlimited cats per device — harmony for the whole household. BRING THEM HOME SAFE • Night curfews bring wanderers home before dark — set once, forgotten. • Who's in and who's out, at a glance. • Real-time notifications for arrivals, exits and attempted smuggling. THE APP • A live activity feed with video of every coming and going. • A profile for every cat: habits, daily rhythms, prey attempts. • Remote unlock, door policies and curfews — control from the sofa. • Share the clips. "Nice try, Mabel." Works with your OnlyCat® flap. Set up in minutes. Stay connected. Feel relieved. Let cats be cats.

Screenshots

Inverter4 screens
OnlyCat4 screens

Verdict

The call

The clearest difference is ads: Inverter at none against OnlyCat's shown. Inverter also leads on update cadence (every 10 days vs every 3 months) and monetization model (free vs ad-supported). On price, review sentiment, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Inverter ships an update every 10 days, OnlyCat every 3 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
Inverter versus OnlyCat: the parameters behind the verdict, then further details
ParameterInverterOnlyCat
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews92.6% of reviews — better90.9% of reviews
Number of ratings—2 — better
Update frequencyEvery 10 days — betterEvery 3 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.615.5 — better
Further details — not scored
Size24 MB61 MB
Age rating4+12+
DeveloperRichard RussellOnlyCat

Customer experience

Inverter

Written reviews27 reviews
Positive92.6%
Neutral3.7%
Negative3.7%

OnlyCat

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

In-app purchases

None

Inverter

No in-app purchases

None

OnlyCat

No in-app purchases

Questions

Is Inverter free?
Inverter is free to download, with no in-app purchases.
Is OnlyCat free?
OnlyCat is free to download, with no in-app purchases.
Do Inverter or OnlyCat have ads?
OnlyCat shows ads; Inverter does not.
Which is updated more often, Inverter or OnlyCat?
Inverter ships an update every 10 days, and OnlyCat every 3 months. Most recently, Inverter was updated on November 3, 2026 and OnlyCat on November 4, 2026.

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