Comparison

Ultra Light Performance Tool vs AviCalc

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

AviCalc

Features
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Calculate your duty times, fuel uplifts easy and fast. To use the app, read the full text of instructions. Purpose of AviationCalc: Flight Duty Period Page: AviationCalc helps you calculate Maximum Duty Periods and Total Duty Periods, correcting for time zones from the start of duty location and end of duty time zone. Also, it will search maximum flight duty period for acclimatised crew for Hong Kong CAD. Fuel Uplift Page: AviationCalc helps you calculate fuel uplift in Kg, USG and Litres to help you calculate your data fast and easy. ***Disclamer*** The information this app presents should not be used as primary tool for your calculations. Allowing the app access your location will only allow the app to help get better precision on which Time Zone to use. Click on info button (bottom right) to pull up how-to-use alerts or whenever you want to change the regulatory institution or choose a different time after flight duty for total duty period calculation. If there is something wrong going on, tap the screen again. Please leave your review.

Screenshots

Ultra Light Performance Tool4 screens
AviCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: AviCalc at none against Ultra Light Performance Tool's 7. AviCalc also leads on update cadence (every 3 weeks vs every 3 months). Ultra Light Performance Tool's advantage is iOS requirement (12.0 vs 15.0). 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. AviCalc asks for nothing beyond the download.

UpkeepUpdate frequency

Ultra Light Performance Tool ships an update every 3 months, AviCalc every 3 weeks. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

Scorecard3 real differences Β· 3 level
Ultra Light Performance Tool versus AviCalc: the parameters behind the verdict, then further details
ParameterUltra Light Performance ToolAviCalc
PriceFreeFree
Update frequencyEvery 3 monthsEvery 3 weeks β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 β€” better15.0
Further details β€” not scored
Size30 MB9 MB
Age rating4+4+
DeveloperKonstantin LudwigAldo Mendes Martins

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

AviCalc

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 AviCalc free?
AviCalc is free to download, with no in-app purchases.
Do Ultra Light Performance Tool or AviCalc have ads?
Neither Ultra Light Performance Tool nor AviCalc shows ads.
Which is updated more often, Ultra Light Performance Tool or AviCalc?
Ultra Light Performance Tool ships an update every 3 months, and AviCalc every 3 weeks. Most recently, Ultra Light Performance Tool was updated on September 10, 2026 and AviCalc on September 19, 2026.

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