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.
Shifter Clock App
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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.
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
Verdict
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
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.
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.
| Parameter | Shifter Clock App | Ultra Light Performance Tool |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 22 months | Every 3 months β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod β better |
| Requires iOS | 13.0 | 12.0 β better |
| Further details β not scored | ||
| Size | 5 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Shifter Verloning Nederland | Konstantin Ludwig |
In-app purchases
Shifter Clock App
No in-app purchases
Ultra Light Performance Tool
- Donation 1β¬$0.99
- Donation 1β¬$1.99
- Donation 1β¬$3.99
Show 4 moreShow fewer
- Donation 1β¬$8.99
- Donation 1β¬$12.99
- Donation 1β¬$17.99
- Donation 1β¬$44.99
Questions
Is Shifter Clock App free?
Is Ultra Light Performance Tool free?
Do Shifter Clock App or Ultra Light Performance Tool have ads?
Which is updated more often, Shifter Clock App or Ultra Light Performance Tool?
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