K4 Tools vs PilotGuard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K4 Tools
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.
- Magic Scanner for FMS data
- Duty/Rest period calculation
- Crew break scheduling
- Fuel receipt verification
- Pre-flight weather checks
- iPad optimized interface
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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
PilotGuard
This tool helps pilots make informed go/no-go decisions for every flight by assessing risks using the FAA's FRAT and PAVE frameworks. It automatically fetches live weather data and allows users to set personal minimums for a comprehensive pre-flight evaluation.
- FAA FRAT and PAVE framework integration
- Live METAR and TAF weather data fetching
- Automated weather pre-filling
- Customizable personal minimums
- Runway analysis with crosswind/tailwind components
- FAA-sourced risk mitigation suggestions
- Flight history and trend tracking
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PilotGuard brings the FAA's Flight Risk Assessment Tool (FRAT) and PAVE framework to your iPhone and iPad — so every flight starts with a clear, structured go/no-go decision. HOW IT WORKS Enter your departure and arrival airports plus your estimated time of departure. PilotGuard instantly fetches live METAR and TAF data from NOAA and pre-fills your weather questions automatically. Answer the remaining questions across the four PAVE categories — Pilot, Aircraft, enVironment, and External Pressures — and get a risk score in seconds. LIVE WEATHER, BUILT IN No manual lookups. PilotGuard pulls real-time METAR and TAF for both your departure and arrival airports and maps the conditions directly to your assessment. Departure weather, en-route forecast, winds, and time of flight are all pre-filled based on what's actually happening outside. PERSONAL MINIMUMS Set your own limits — maximum crosswind, headwind, and tailwind, minimum runway length, VFR ceiling and visibility, and fuel reserves. PilotGuard checks every flight against your minimums and flags violations clearly in your results, so you're always flying within your personal envelope. RUNWAY ANALYSIS Select your departure and arrival runways and PilotGuard calculates the exact crosswind and tailwind components based on current winds — not just total wind speed. Includes density altitude so you know what your aircraft is actually performing against. FAA-SOURCED RISK MITIGATIONS When any PAVE category scores Moderate or High, PilotGuard surfaces FAA-sourced antidotes specific to that risk area — practical mitigations, not generic advice. FLIGHT HISTORY Every completed assessment is saved to your history. Review past flights, see how conditions compared to your minimums, and track your risk trends over time. BUILT FOR GENERAL AVIATION PILOTS PilotGuard is designed for student pilots building decision-making habits and experienced pilots who want a structured pre-flight discipline. It follows the same 18-question FRAT methodology recommended by the FAA, organized across the four PAVE categories. No account required. No subscription. Your data stays on your device.
Screenshots
Verdict
The clearest difference is in-app purchases: K4 Tools at none against PilotGuard's 3. PilotGuard's advantage is update cadence (every 8 days vs monthly). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PilotGuard sells 3 one-off in-app purchases. K4 Tools asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for K4 Tools against 5.0 for PilotGuard. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
K4 Tools ships an update monthly, PilotGuard every 8 days. The most recent releases landed on July 3, 2026 and September 5, 2026 respectively.
| Parameter | K4 Tools | PilotGuard |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Monthly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | James Everett | Edwin Coronado |
In-app purchases
K4 Tools
No in-app purchases
PilotGuard
- Small Tip$0.99
- Medium Tip$2.99
- Large Tip$4.99





