# FuelTech Datalog Viewer vs TunerView

The clearest difference is rating: FuelTech Datalog Viewer at 4.8 against TunerView's 3.1. FuelTech Datalog Viewer also leads on in-app purchases (none vs 4) and iOS requirement (9.3 vs 13.0). TunerView's advantage is update cadence (every 6 weeks vs every 9 months) and ratings volume (41 vs 4). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. TunerView sells 4 one-off in-app purchases. FuelTech Datalog Viewer asks for nothing beyond the download.

FuelTech Datalog Viewer holds the better App Store score, 4.8 against 3.1. That said, the two scores are not equally well evidenced: TunerView has 41 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 40% and 40% positive.

FuelTech Datalog Viewer ships an update every 9 months, TunerView every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | FuelTech Datalog Viewer | TunerView |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/fueltech-datalog-viewer/id1303811774/reviews)** | [3.1 (41 ratings)](https://appshunter.io/ios/app/tunerview/id1593158185/reviews) |
| Number of ratings | 4 | **41** |
| Positive reviews | 40.0% of reviews | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 168 MB | 108 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FuelTech](https://appshunter.io/developer/519474170) | [Peter Linszter](https://appshunter.io/developer/530077583) |

## What reviewers say

### FuelTech Datalog Viewer

[App page](https://appshunter.io/ios/app/fueltech-datalog-viewer/id1303811774)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### TunerView

[App page](https://appshunter.io/ios/app/tunerview/id1593158185)

This app connects to your vehicle's ECU via a Bluetooth adapter to provide real-time data logging and dashboard displays. Unlock specific datalog protocols through in-app purchases to utilize its full functionality for automotive tuning.

**Highlights:** Real-time datalogging, Customizable dashboard, Bluetooth ECU connection, Support for specific ECUs, In-app protocol purchases

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KTuner Protocol | $4.99 | one-time |
| ECUMaster Protocol | $4.99 | one-time |
| eCTune/HTS Protocol | $4.99 | one-time |
| Neptune Protocol | $4.99 | one-time |


## Frequently asked questions

### Is FuelTech Datalog Viewer free?

FuelTech Datalog Viewer is free to download, with no in-app purchases.

### Is TunerView free?

TunerView is free to download, with in-app purchases available.

### Which has better reviews, FuelTech Datalog Viewer or TunerView?

FuelTech Datalog Viewer is rated higher. FuelTech Datalog Viewer averages 4.8 out of 5 from 4 ratings, while TunerView averages 3.1 from 41 ratings.

### Do FuelTech Datalog Viewer or TunerView have ads?

Neither FuelTech Datalog Viewer nor TunerView shows ads.

### Which is updated more often, FuelTech Datalog Viewer or TunerView?

FuelTech Datalog Viewer ships an update every 9 months, and TunerView every 6 weeks. Most recently, FuelTech Datalog Viewer was updated on October 24, 2026 and TunerView on October 24, 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.*