Inverter vs OnlyCat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Monitor inverter status
- Control inverter settings
- Connect up to three inverters
- Independent inverter management
- IP address reset via Files app
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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/
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.
- AI prey detection
- Selective access control
- Smart notifications
- Multi-cat management
- Timed curfews
- Activity tracking
- Personalized cat profiles
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Inverter | OnlyCat |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 92.6% of reviews — better | 90.9% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 10 days — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.6 | 15.5 — better |
| Further details — not scored | ||
| Size | 24 MB | 61 MB |
| Age rating | 4+ | 12+ |
| Developer | Richard Russell | OnlyCat |
Customer experience
Inverter
OnlyCat
In-app purchases
Inverter
No in-app purchases
OnlyCat
No in-app purchases








