# FuelTech Datalog Viewer vs PRO Basic FirePlus

The clearest difference is in-app purchases: FuelTech Datalog Viewer at none against PRO Basic FirePlus's 7. PRO Basic FirePlus's advantage is update cadence (every 4 months vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PRO Basic FirePlus sells 7 one-off in-app purchases. FuelTech Datalog Viewer asks for nothing beyond the download.

FuelTech Datalog Viewer ships an update every 9 months, PRO Basic FirePlus every 4 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | FuelTech Datalog Viewer | PRO Basic FirePlus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/fueltech-datalog-viewer/id1303811774/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 168 MB | 3 MB |
| Requires iOS | 9.3 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FuelTech](https://appshunter.io/developer/519474170) | [DILTS JAPAN, LIMITED LIABILITY CO.](https://appshunter.io/developer/780416956) |

## 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


### PRO Basic FirePlus

[App page](https://appshunter.io/ios/app/pro-basic-fireplus/id1669035416)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GROM JC61 | $3.99 | one-time |
| Z125 PRO | $3.99 | one-time |
| CYGNUS-X FI | $3.99 | one-time |
| NMAX125 SE86J | $3.99 | one-time |
| 4-CYGNUS-X | $3.99 | one-time |
| MAJESTY-S SG28J | $3.99 | one-time |
| FI-MONKEY AB27 | $3.99 | one-time |


## Frequently asked questions

### Is FuelTech Datalog Viewer free?

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

### Is PRO Basic FirePlus free?

PRO Basic FirePlus is free to download, with in-app purchases available.

### Do FuelTech Datalog Viewer or PRO Basic FirePlus have ads?

Neither FuelTech Datalog Viewer nor PRO Basic FirePlus shows ads.

### Which is updated more often, FuelTech Datalog Viewer or PRO Basic FirePlus?

FuelTech Datalog Viewer ships an update every 9 months, and PRO Basic FirePlus every 4 months. Most recently, FuelTech Datalog Viewer was updated on November 2, 2026 and PRO Basic FirePlus on November 2, 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.*