# Jet Fueling vs K4 Tools

The clearest difference is price: K4 Tools at Free against Jet Fueling's $1.99. K4 Tools also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.6). Jet Fueling's advantage is ratings volume (7 vs 1) and iOS requirement (9.0 vs 26.0). On update cadence, ads and device support there is nothing between them.

K4 Tools is free to download; Jet Fueling costs $1.99 up front. Jet Fueling sells 1 one-off in-app purchase. K4 Tools asks for nothing beyond the download.

K4 Tools holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Jet Fueling has 7 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Jet Fueling | K4 Tools |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/jet-fueling/id289440313/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/k4-tools/id6758374210/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 89.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 31 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Serge Ostrowsky](https://appshunter.io/developer/286026735) | [James Everett](https://appshunter.io/developer/1015137244) |

## What reviewers say

### Jet Fueling

[App page](https://appshunter.io/ios/app/jet-fueling/id289440313)

This app assists aircraft refueling operations and payload calculations. It helps determine desired bloc fuel, computes uplift quantities considering various factors, and performs basic fuel and specific gravity conversions. A built-in calculator is accessible via a swipe gesture.

**Highlights:** Payload vs. Bloc Fuel determination, Uplift quantity calculation, Fuel on Board (FOB) consideration, APU fuel consumption calculation, Fuel density input, Basic fuel conversions, Specific gravity conversions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chateau Tess 2009 | $2.99 | one-time |


### K4 Tools

[App page](https://appshunter.io/ios/app/k4-tools/id6758374210)

This app assists flight crews with inflight fuel and time calculations, integrating with flight plans. Features include scanning flight data, calculating duty and rest periods, and managing crew breaks. It also helps verify fuel accuracy and pre-flight weather conditions.

**Highlights:** Magic Scanner for FMS data, Duty/Rest period calculation, Crew break scheduling, Fuel receipt verification, Pre-flight weather checks, iPad optimized interface

**In-app purchases:** none


## Frequently asked questions

### Is Jet Fueling free?

Jet Fueling costs $1.99, and also offers in-app purchases.

### Is K4 Tools free?

K4 Tools is free to download, with no in-app purchases.

### Which has better reviews, Jet Fueling or K4 Tools?

K4 Tools is rated higher. Jet Fueling averages 4.6 out of 5 from 7 ratings, while K4 Tools averages 5.0 from 1 ratings.

### Do Jet Fueling or K4 Tools have ads?

Neither Jet Fueling nor K4 Tools shows ads.

### Which is updated more often, Jet Fueling or K4 Tools?

Jet Fueling ships an update monthly, and K4 Tools monthly. Most recently, Jet Fueling was updated on October 23, 2026 and K4 Tools on October 22, 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.*