# FuelTech Datalog Viewer vs VerticalWB

The clearest difference is review sentiment: VerticalWB at 100% against FuelTech Datalog Viewer's 40%. VerticalWB also leads on update cadence (every 2 weeks vs every 9 months) and rating (5.0 vs 4.8). FuelTech Datalog Viewer's advantage is price (Free vs $1.99) and iOS requirement (9.3 vs 15.6). On ratings volume, ads, in-app purchases and device support there is nothing between them.

FuelTech Datalog Viewer is free to download; VerticalWB costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VerticalWB holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 6 respectively. Written reviews point the same way: 40% of FuelTech Datalog Viewer's written reviews are positive against 100% of VerticalWB's.

FuelTech Datalog Viewer ships an update every 9 months, VerticalWB every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | FuelTech Datalog Viewer | VerticalWB |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/fueltech-datalog-viewer/id1303811774/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/verticalwb/id6757898164/reviews)** |
| Number of ratings | 4 | **6** |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 168 MB | 5 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [FuelTech](https://appshunter.io/developer/519474170) | [Sean Heiken](https://appshunter.io/developer/1869511912) |

## 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


### VerticalWB

[App page](https://appshunter.io/ios/app/verticalwb/id6757898164)

A streamlined weight and balance calculator for Robinson helicopter pilots. It offers offline functionality and a clean interface for easily calculating fuel, gross weight, and CG projections. Supports custom helicopter profiles for quick preflight calculations.

**Highlights:** Offline weight and balance calculation, Supports R22, R44, R66 models, Calculates max fuel, recommended fuel, gross weight, CG, In-flight CG projections, Unlimited custom helicopter profiles, Clean and simple user interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is FuelTech Datalog Viewer free?

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

### Is VerticalWB free?

VerticalWB costs $1.99, with no in-app purchases.

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

VerticalWB is rated higher. FuelTech Datalog Viewer averages 4.8 out of 5 from 4 ratings, while VerticalWB averages 5.0 from 6 ratings.

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

Neither FuelTech Datalog Viewer nor VerticalWB shows ads.

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

FuelTech Datalog Viewer ships an update every 9 months, and VerticalWB every 2 weeks. Most recently, FuelTech Datalog Viewer was updated on October 24, 2026 and VerticalWB 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.*