# RSiAJP vs Speedtail

The clearest difference is price: Speedtail at Free against RSiAJP's $22.99. Speedtail also leads on update cadence (daily vs every 2 months) and iOS requirement (9.0 vs 14.0). RSiAJP's advantage is device support (4 vs 2). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Speedtail is free to download; RSiAJP costs $22.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for RSiAJP against 5.0 for Speedtail. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

RSiAJP ships an update every 2 months, Speedtail daily. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RSiAJP | Speedtail |
| --- | --- | --- |
| Price | $22.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/rsiajp/id1234725485/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/speedtail/id1494817940/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Paid | **Free** |
| Size | 33 MB | 29 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grenat](https://appshunter.io/developer/1234725484) | [McLaren Automotive Limited](https://appshunter.io/developer/562173546) |

## What reviewers say

### RSiAJP

[App page](https://appshunter.io/ios/app/rsiajp/id1234725485)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


### Speedtail

[App page](https://appshunter.io/ios/app/speedtail/id1494817940)

Monitor your McLaren Speedtail's charging status remotely via your wallbox charger. This app offers insights into the performance and efficiency of one of McLaren's most advanced vehicles.

**Highlights:** Remote charging status view, Wallbox charger connectivity, McLaren Speedtail information, Automotive design benchmark, Hybrid powertrain details

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RSiAJP free?

RSiAJP costs $22.99, with no in-app purchases.

### Is Speedtail free?

Speedtail is free to download, with no in-app purchases.

### Which has better reviews, RSiAJP or Speedtail?

RSiAJP and Speedtail are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do RSiAJP or Speedtail have ads?

Neither RSiAJP nor Speedtail shows ads.

### Which is updated more often, RSiAJP or Speedtail?

RSiAJP ships an update every 2 months, and Speedtail daily. Most recently, RSiAJP was updated on October 14, 2026 and Speedtail on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*