FuelTech Datalog Viewer vs Vantage Logon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FuelTech Datalog Viewer
Analyze engine data logs from compatible FuelTech ECUs on your mobile device. View up to four channels simultaneously for quick data analysis and check status events for errors. Log files must be transferred to the device manually.
- View up to 4 recorded channels simultaneously
- Quick data analysis
- Check status events for errors
- Supports FT450, FT500, FT500LITE, FT550, FT550LITE, FT600 models
- Log file viewer for phone/tablet
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The FuelTech Datalog Viewer application is a log file viewer for your phone or tablet to the Power FT line, which includes the FT450, FT500, FT500LITE, FT550, FT550LITE and FT600 models. With it, you can simultaneously view up to 4 recorded channels, allowing a quick data analysis. The status events are also available through the application, allowing you to easily check for errors while recording the log. Note: The application does not allow a direct connection to the ECU. You need to send the log file to the phone via email, WhatsApp, Dropbox or any other means. Visit http://www.fueltech.net for more information!
Vantage Logon
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Used to scan the QR code and log onto Vantage EMU equipment to register site attendance
Screenshots
Verdict
The clearest difference is iOS requirement: FuelTech Datalog Viewer at 9.3 against Vantage Logon's 15.0. On price, update cadence, ads and in-app purchases 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.
FuelTech Datalog Viewer ships an update every 9 months, Vantage Logon every 11 months. The most recent releases landed on October 26, 2026 and October 1, 2026 respectively.
| Parameter | FuelTech Datalog Viewer | Vantage Logon |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 9 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 168 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | FuelTech | Thames Valley Controls Limited |
In-app purchases
FuelTech Datalog Viewer
No in-app purchases
Vantage Logon
No in-app purchases
Questions
Is FuelTech Datalog Viewer free?
Is Vantage Logon free?
Do FuelTech Datalog Viewer or Vantage Logon have ads?
Which is updated more often, FuelTech Datalog Viewer or Vantage Logon?
Other comparisons
