Refuelling vs Skyden
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Refuelling
This app helps pilots calculate aircraft fuel requirements with advanced error management. It allows for unlimited aircraft entries and custom parameters, providing detailed fuel chit and techlog entries. Visualizations and volumetric checks ensure accuracy and compliance.
- Unlimited aircraft entry
- Custom aircraft parameters
- Built-in error management
- Detailed fuel chit and techlog
- Pictorial fuel distribution view
- Volumetric and weight checks
- Data retention and verification
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Enter as many aircraft as you like and set your own parameters! Incredibly detailed and sophisticated App with built-in error management. EASY TO USE - Ensure correct aircraft selected - Enter required ramp fuel - Enter remaining fuel - Press calculate! - Techlog and fuel chit entries will be displayed DATA RETENTION - Remembers information used - Allows subsequent data input verification, unlike a calculator UNLIMITED AIRCRAFT - Designed to allow entry of aircraft type-specific parameters for as many aircraft and variants as desired - Set default specific gravity for each aircraft for ease - Set a preference for Separate Tanks if your aircraft does not have a fuel totaliser to avoid mental addition - Elect to display 'FULL' on the fuel chit when the wing tanks are full or the actual value - Supports rounding for aircraft that refuel in 100 Kg/Lb increments when using a 3-tank arrangement - Add company-specific volumetric tolerances for each aircraft to verify fuel weight and/or volume is within prescribed limits - Only needs to be done once PICTORIAL - Once fuel requirements have been calculated, tap anywhere on the Fuel Chit section to see a pictogram of the aircraft showing fuel distribution in each tank along with total fuel required and total uplift required! VOLUMETRIC CHECK - If required, it is possible to check both fuel weight and volume are within set tolerance. ERROR MANAGEMENT - Guards against entry errors using aircraft data - Automatic Universal App. See Developer website. Designed for iPhone but works just as well on iPad.
Skyden
This app is a modern pilot logbook designed for professionals. It allows for quick flight logging, secure cloud synchronization, and generation of compliant exportable logbooks. Track certificates and licenses with automatic reminders, and import data from other logbook services.
- Offline flight logging
- Secure cloud sync
- Exportable PDF logbooks
- Certificate and license tracking
- Import from other logbooks
- Interactive world map of visited airports
- Crew management and digital signatures
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LOG FLIGHTS. KEEP THE MEMORIES. Skyden is a pilot logbook for recording flights and saving the memories that come with them. Log a flight in seconds, add photos, and see your flying history on the map. LOG A FLIGHT IN SECONDS Skyden fills in aircraft, airports, times, and crew as you go. It works offline in the cockpit, at a remote airfield, or between sectors. Secure sync keeps your logbook up to date across your devices. MEMORIES Skyden goes through your logbook and brings back the flights worth remembering, from a first or a milestone to a trip drawn on the map. New memories arrive as you keep flying. Add photos or videos to a flight and its memory opens with them, or make a card to share. SEE WHERE YOU HAVE FLOWN View every airport and route on one map. Trends show your flight time, landings, cross-country hours, aircraft, and more. EXPORT YOUR LOGBOOK Create PDF logbooks for EASA, FAA, TCCA, UK CAA, JCAB, UAE GCAA, and CASA. Print, sign, or share them when needed. IMPORT YOUR EXISTING LOGBOOK Import records from LogTen, ForeFlight, FlyLog, PILOTLOG, Swift Logbook, Carnet.aero, FlightLog, spreadsheets, and supported airline rosters. CERTIFICATES AND CURRENCY Track certificates, licenses, medicals, and currency. Pilot Status checks your recency for each class or type rating and your flight time limits under your authority's rules. Skyden reminds you before anything expires, and widgets keep your status on your Home Screen and Lock Screen. Captains and instructors can sign flights in the app. YOUR DATA STAYS YOURS Skyden saves flights on your device first, then syncs them securely. Your flight data remains yours. SKYDEN PRO Log your first 20 flight hours for free. No subscription is required to start. Once you've logged 20 hours, subscribe to Skyden Pro to keep logging without limits. Available plans and current prices are shown before purchase. Subscription Information A Pro subscription is required to log beyond your first 20 flight hours. Pricing may vary by location. You can see prices under In-App Purchases in the Information section of this page, or on the subscription screen in the app. Your subscription is charged through your App Store account and renews automatically 24 hours before the current period ends, unless auto-renewal is turned off. You can manage or cancel your subscription in your App Store account settings. After cancellation, access continues until the end of the current billing period. -- Terms of Use: https://skyden.app/legal/terms Privacy Policy: https://skyden.app/legal/privacy
Screenshots
Verdict
The clearest difference is price: Skyden at Free against Refuelling's $4.99. Skyden also leads on update cadence (every 2 days vs every 2 months) and review sentiment (90% vs 75%). Refuelling's advantage is in-app purchases (none vs 11) and iOS requirement (15.0 vs 17.0). On ads and device support 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
Skyden is free to download; Refuelling costs $4.99 up front. Skyden sells 7 in-app purchases, starting at $9.99 per month. Refuelling asks for nothing beyond the download.
Refuelling ships an update every 2 months, Skyden every 2 days. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.
| Parameter | Refuelling | Skyden |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 3.0 (1 ratings) — better | — |
| Positive reviews | 75.0% of reviews | 90.5% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Chris Godesar | Guillaume Huchet |
Customer experience
Refuelling
Skyden
In-app purchases
Refuelling
No in-app purchases
Skyden
- Skyden Pro5 variants$9.991 Month
- Skyden Pro$49.991 Year
- Skyden Pro7 Days trial$59.991 Year
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- Skyden Pro7 Days trial$79.991 Year
- Skyden Pro3 Days trial$79.991 Year
- Skyden Pro$79.991 Year
- Skyden Plus Lifetime$179.99









