Comparison

Ultra Light Performance Tool vs FlightDesk

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Ultra Light Performance Tool

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Ultra Light Performance Tool (ULPT) is an Open-Source-Project meant for takeoff performance calculations for ultra light aircraft. It was created by a team of flight instructors and software developers aiming to give new pilots an idea of how certain environmental conditions may affect the performance of their aircraft during takeoff. This very version is published by Worldpixel Software and is proprietary and closed as such. It is almost completely based on the open source variant of ULPT and varies only by some changes necessary for store publication. Features: β€’Add Aircraft and Airports with respective data β€’Calculation of factorized takeoff distance for ultra light aircraft β€’Calculations based on Flugsicherheitsmitteilung (Flight Safety Letter) FSM 3/75 of the LBA (German Civil Aviation Authority) as well as AOPA Safety Letter June 2020 Project Website: https://github.com/FrenchTacoDev/ultra_light_performance_tool

About

FlightDesk

Features
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Every flight begins long before takeoff. And the story continues after landing. FlightDesk brings flight preparation, experience and a passion for flying into one place: Pilot Logbook, Flight Log, Mass & Balance, fuel planning, risk assessment, quizzes, Pilot Page and pilot stories. From the route you imagine to the hours you earn, keep your flying life with you. PILOT LOGBOOK β€” WATCH YOUR EXPERIENCE GROW Record your flights and keep aircraft, airports, hours and activity together. Review totals, PIC and dual time, takeoffs, landings and recency. Explore statistics and routes, add attachments and export your logbook as a PDF. Every entry marks another step in your journey as a pilot. FLIGHT LOG β€” YOUR ROUTE, POINT BY POINT Plan your navigation with legs, reporting points, distances, times, altitudes and aircraft performance. View the route on a map, prepare outbound and return flights, add COM/NAV references and generate a Flight Log PDF. Import and export FPL routes to connect your planning workflow. MASS & BALANCE β€” PUT EVERY WEIGHT IN ITS PLACE Organise the pilot, passengers, baggage and fuel using an aircraft profile available in your account. Review takeoff and landing weight and centre of gravity, the envelope and limit exceedance alerts. Connect the calculation to your Flight Log and export a PDF summary. FUEL PLANNING β€” WORK THROUGH THE NUMBERS Compare fuel loaded, expected consumption, alternate fuel, reserve and extra. Track estimated fuel across your flights and plan refuelling stops, with a summary that follows your route. RISK ASSESSMENT β€” TAKE STOCK BEFORE TAKEOFF A guided questionnaire helps you consider weather, surroundings, runway, mission, experience and pressures. Bring those factors into a structured assessment, with a score and guidance to inform your flight preparation. PILOT STORIES β€” GIVE YOUR FLIGHTS A VOICE A flight is more than a logbook entry. Share an experience, add photos, videos and PDF attachments, link flights and telemetry, and choose who can see your story. Discover stories from the community and turn your adventures into something to revisit. PILOT PAGE β€” A JOURNEY WORTH SHARING Present your pilot profile and share a map of the airports you have visited. Choose what to show: your public map highlights destinations without revealing flight dates or details. QUIZZES AND STUDY β€” BUILD YOUR KNOWLEDGE Choose from the available question banks and subjects, practise with quizzes, take mock exams and resume unfinished sessions. Review answers and available explanations, and follow your progress with dedicated statistics. MORE TO EXPLORE Aviation weather, bulletins and NOTAMs, airports, maps and flight plan tools round out your flight preparation space. Your flying life, on iPhone and iPad. Interface available in English and Italian. A FlightDesk account is required for personal features. These tools support pilot preparation and awareness; they do not replace official documentation, the aircraft flight manual or operational judgement. Prepare. Fly. Log. Share. FlightDesk.

Screenshots

Ultra Light Performance Tool4 screens
FlightDesk4 screens

Verdict

The call

The clearest difference is in-app purchases: FlightDesk at none against Ultra Light Performance Tool's 7. FlightDesk also leads on update cadence (every 2 days vs every 3 months). Ultra Light Performance Tool's advantage is iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Ultra Light Performance Tool sells 7 one-off in-app purchases. FlightDesk asks for nothing beyond the download.

UpkeepUpdate frequency

Ultra Light Performance Tool ships an update every 3 months, FlightDesk every 2 days. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

Scorecard3 real differences Β· 3 level
Ultra Light Performance Tool versus FlightDesk: the parameters behind the verdict, then further details
ParameterUltra Light Performance ToolFlightDesk
PriceFreeFree
Update frequencyEvery 3 monthsEvery 2 days β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS12.0 β€” better17.0
Further details β€” not scored
Size30 MB17 MB
Age rating4+4+
DeveloperKonstantin LudwigFabio Giraud

In-app purchases

7 purchases

Ultra Light Performance Tool

One-time7
  • Donation 1€$0.99
  • Donation 1€$1.99
  • Donation 1€$3.99
Show 4 more
  • Donation 1€$8.99
  • Donation 1€$12.99
  • Donation 1€$17.99
  • Donation 1€$44.99
None

FlightDesk

No in-app purchases

Questions

Is Ultra Light Performance Tool free?
Ultra Light Performance Tool is free to download, with in-app purchases available.
Is FlightDesk free?
FlightDesk is free to download, with no in-app purchases.
Do Ultra Light Performance Tool or FlightDesk have ads?
Neither Ultra Light Performance Tool nor FlightDesk shows ads.
Which is updated more often, Ultra Light Performance Tool or FlightDesk?
Ultra Light Performance Tool ships an update every 3 months, and FlightDesk every 2 days. Most recently, Ultra Light Performance Tool was updated on September 28, 2026 and FlightDesk on October 9, 2026.

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