RSiAJP vs Inverter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RSiAJP
Monitor and diagnose your TVR AJP engined car's ECU in real-time. View live engine data, logged faults, and GPS information. Reset faults, service intervals, and adaptives. Set custom alerts with voice and sound notifications.
- Real-time ECU data display
- Live and logged fault monitoring
- GPS speed, coordinates, and heading
- ECU fault and service interval reset
- Customizable alert thresholds with audio
- Data logging for export
- Simulated mode for demonstration
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This application enables the display and background monitoring of ECU information for TVR AJP (V8 and S6) engined cars (Cerbera, Tamora, Tuscan, Sagaris, T350). The application connects to the car's MBE 941/970 ECU using a Bluetooth Low Energy serial adapter available from http://http://rsiajp.com The app displays real time data such as water temperature, throttle position, air temperature, ignition advance, rpm, etc... as well as live and logged faults as reported by the ECU. Also, though the use of the onboard GPS, your current travelling speed is available for display. In addition to displaying the data, the application enables the user to reset the ECU's logged faults, service interval, adaptives and throttle (S6) and can be used to log live data for export via email. Warning thresholds can be setup on individual data items, the thresholds will be displayed through colour coding on the gauges. A fully simulated mode is available to show the application to your friends too, even though you're not connected to a car. More details on our website: http://rsiajp.com and our Facebook page https://www.facebook.com/rsiajp The author of the application will accept no liability whatsoever for any damage to the car, engine or ECU resulting from the use of the application. By running the application you accept full responsibility of any potential consequences.
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/
Screenshots
Verdict
The clearest difference is price: Inverter at Free against RSiAJP's $22.99. Inverter also leads on update cadence (every 10 days vs every 2 months). On review sentiment, ads, 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
Inverter is free to download; RSiAJP costs $22.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RSiAJP ships an update every 2 months, Inverter every 10 days. The most recent releases landed on October 23, 2026 and October 13, 2026 respectively.
| Parameter | RSiAJP | Inverter |
|---|---|---|
| Price | $22.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 92.6% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 33 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Grenat | Richard Russell |
Customer experience
RSiAJP
Inverter
In-app purchases
RSiAJP
No in-app purchases
Inverter
No in-app purchases









