# K4 Tools — Fuel, Rest, Duty & Flt Calcs

> Flight crew utility for fuel, duty, rest, and flight calculations. (iPhone/iPad app by James Everett.)

- Source: https://appshunter.io/ios/app/k4-tools/id6758374210 (this page in markdown: same URL + `.md`)
- Developer: [James Everett](https://appshunter.io/developer/1015137244)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.6 · 31 MB
- Languages: English
- Released: 2026-01-29
- Data updated: 2026-07-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/k4-tools/id6758374210/reviews.md

## What is K4 Tools?

K4 Tools helps flight crews complete inflight fuel and time checks quickly and accurately — with calculators built around your current flight plan.

Highlights:
• Magic Scanner: Use the iPhone camera on support models to scan the FMS Position Report and auto-fill required fields.
• Duty/Rest Calculator: See Max Duty End, Latest Legal Takeoff, and required rest based on crew size, sequence, and consent — with live remaining duty.
• Crew Rest: Share break schedules and keep track visually on the crew break Timeline.
• Fuel Checks: Verify pre‑flight fuel upload accuracy across multiple receipts.
• Pre-flight weather verification via calculated ETA's at Departure, Destination, Alternate, and ETP Airports.
• iPhone + iPad: Optimized for both portrait and landscape use on iPad — including mounted flight-deck configurations..

Limits and warnings appear when operational or contractual thresholds are approached or likely to be exceeded, so you can take corrective action early.

Planned updates:
- B777 flight plan support for both standard and ETOPS plans.
- Crew Rest Alarms automatically set for selected break period.
- Custom Crew Rest break lengths

## Key features

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


## Frequently asked questions about K4 Tools

### What is K4 Tools?

K4 Tools is a utility application designed for flight crews to quickly and accurately perform inflight fuel and time checks, with calculators integrated into current flight plans.

### What devices does K4 Tools support?

K4 Tools is optimized for both iPhone and iPad, including support for portrait and landscape orientations on iPad, even in mounted flight-deck configurations.

### How often is K4 Tools updated?

The latest version, 1.8, was released on June 14, 2026. Planned updates include B777 flight plan support and crew rest alarms.

### Is K4 Tools suitable for all ages?

K4 Tools has an age rating of 4+, making it suitable for a wide range of users. It provides operational and contractual threshold warnings for flight crews.

### Does K4 Tools have ads?

No, K4 Tools does not contain advertisements. It is a free application without any in-app purchases or ads.

### What are the key features of K4 Tools?

Key features include the Magic Scanner to auto-fill flight data, a Duty/Rest Calculator for legal flight times, Crew Rest scheduling, Fuel Checks for receipt verification, and pre-flight weather checks.

### What is the user rating for K4 Tools?

K4 Tools has a perfect rating of 5.0 stars based on one review, indicating high user satisfaction with its functionality.

### Can K4 Tools help with crew scheduling?

Yes, K4 Tools includes a Crew Rest feature to share break schedules and visually track them on a crew break Timeline, helping manage rest periods effectively.

## Version history (last 5 releases)

### 1.8 — 2026-06-14

• Added B777 Support for flight plan imports!!
• Send Crew Rest schedules to nearby K4 Tools users over Bluetooth
• Receive and accept schedules directly within the app
• Automatic Crew Rest updates when a proposal is accepted
• Improved weather retrieval reliability
• Various bug fixes and performance improvements

### 1.6 — 2026-05-19

- Updated dark mode UI for improved readability.  
- Improved weather verification checks at Departure, Destination, Alternate, and ETP Airports.  
- Airport ETA calculations now shown in each airport's weather detail view.  Works with Standard, B043, and B044 flight plans.

### 1.5 — 2026-04-20

Added weather verification checks at Departure, Destination, Alternate, and ETP Airports, at the appropriate ETA's.  Works with Standard, B043, and B044 flight plans.

### 1.4 — 2026-03-18

Updated for improved Flight Plan import and general User Interface Improvements.

### 1.3 — 2026-03-17

Minor UI updates for readability.

## Apps similar to K4 Tools

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Flight Crew App](https://appshunter.io/ios/app/flight-crew-app/id6463236719) | 5.0 (1) | Free | Utilities |
| [ICP Inc.](https://appshunter.io/ios/app/icp-inc/id6449264632) | — | Free | Utilities |
| [PilotGuard](https://appshunter.io/ios/app/pilotguard/id6762247709) | 5.0 (1) | Free | Utilities |
| [Pilot Duty & Performance Calc](https://appshunter.io/ios/app/pilot-duty-and-performance-calc/id537253628) | 3.5 (11) | $4.99 | Utilities |
| [Fuel Density Calculation](https://appshunter.io/ios/app/fuel-density-calculation/id6636469810) | 5.0 (2) | $2.99 | Utilities |
| [Crew Room: Town Hall](https://appshunter.io/ios/app/crew-room-town-hall/id1643950419) | 3.7 (6) | Free | Utilities |

## More apps by James Everett

- [Car Lease Buddy](https://appshunter.io/ios/app/car-lease-buddy/id6754673806)

All apps by James Everett: https://appshunter.io/developer/1015137244

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-03.*