Comparison

Shifter Clock App vs Ultra Light Performance Tool

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

Head to head
About

Shifter Clock App

Features
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Shifter manager app for registering employee working hours. Clock workers in and out of shifts, evaluate employees or track break durations. For use with Shifter3 WorkForce Management.

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

Screenshots

Shifter Clock App4 screens
Ultra Light Performance Tool4 screens

Verdict

The call

The clearest difference is in-app purchases: Shifter Clock App at none against Ultra Light Performance Tool's 7. Ultra Light Performance Tool's advantage is update cadence (every 3 months vs every 22 months). On price, ads, device support and iOS requirement 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. Shifter Clock App asks for nothing beyond the download.

UpkeepUpdate frequency

Shifter Clock App ships an update every 22 months, Ultra Light Performance Tool every 3 months. The most recent releases landed on September 5, 2026 and September 10, 2026 respectively.

Scorecard2 real differences Β· 4 level
Shifter Clock App versus Ultra Light Performance Tool: the parameters behind the verdict, then further details
ParameterShifter Clock AppUltra Light Performance Tool
PriceFreeFree
Update frequencyEvery 22 monthsEvery 3 months β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS13.012.0 β€” better
Further details β€” not scored
Size5 MB30 MB
Age rating4+4+
DeveloperShifter Verloning NederlandKonstantin Ludwig

In-app purchases

None

Shifter Clock App

No 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

Questions

Is Shifter Clock App free?
Shifter Clock App is free to download, with no in-app purchases.
Is Ultra Light Performance Tool free?
Ultra Light Performance Tool is free to download, with in-app purchases available.
Do Shifter Clock App or Ultra Light Performance Tool have ads?
Neither Shifter Clock App nor Ultra Light Performance Tool shows ads.
Which is updated more often, Shifter Clock App or Ultra Light Performance Tool?
Shifter Clock App ships an update every 22 months, and Ultra Light Performance Tool every 3 months. Most recently, Shifter Clock App was updated on September 5, 2026 and Ultra Light Performance Tool on September 10, 2026.

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