Steiner Tree vs Signals and Systems
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Steiner Tree
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This app computes Steiner trees using an evolutionary algorithm. You can place, drag, and delete points of your tree. The optimal number and position of Steiner points is computed. A minimal spanning tree (MST) connects a given set of points in a plane so that the sum of all edges is minimal. Often this sum of all edges can be reduced, if additional points are added. These points are called Steiner points, and the corresponding minimal spanning tree Steiner tree. If more than 3 points are given, it is a hard optimization problem to compute the optimal number and position of Steiner points. This app uses a simple evolutionary algorithm for demonstration purposes. It uses a population of individuals. Each individual represents a MST containing some Steiner points. The population develops towards the optimal Steiner tree in an evolutionary loop: Initially, each individual sets random Steiner points, and constructs the corresponding Steiner tree. The minimal length of the Steiner tree in the population is stored. Each individual has now a fitness value, which is the higher, the closer its Steiner tree length is to the minimal length in the population. Fitter individuals have more descendants by reproduction, and less fit individuals die out. In order to explore better solutions, reproduction does not create descendants that are identical to the parent individual, i.e. do not have their Steiner points at the same position. Rather these positions are shifted randomly by mutation, using a Gaussian distribution. How far they are shifted on average is determined also by their fitness: Good individuals shift their Steiner points less than worse individuals. How fast a good solution is found, depends thus on the population size, and the mutation strength.
Signals and Systems
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Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://forwaelade.web.app/SignalsSystems/privacy-policy Boost your understanding of Signals and Systems with our interactive engineering quiz app! Designed for students, engineers, and enthusiasts, this app covers key concepts and applications in Signals and Systems to help you ace exams, prepare for interviews, and enhance your technical skills. Features: Comprehensive Topics: Dive into Fourier analysis, Laplace transforms, Z-transforms, convolution, modulation, and more. Perfectly tailored for beginners and advanced learners alike. Interactive Quizzes: Test your knowledge with multiple-choice questions, numerical problems, and real-world application scenarios. Detailed Explanations: Learn as you go with in-depth explanations for every question. Progress Tracking: Monitor your performance, identify weak areas, and work on them effectively. Modern Tools: Includes coverage of time-frequency analysis, digital filter design, and emerging trends in signal processing. Whether you're studying for exams, preparing for competitive tests, or brushing up on core concepts, this app is your ultimate learning partner for mastering Signals and Systems. Download now and take your engineering skills to new heights!
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Verdict
The clearest difference is in-app purchases: Steiner Tree at none against Signals and Systems's 6. Steiner Tree also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). Signals and Systems's advantage is update cadence (every 5 weeks vs every 45 months). On price and ads there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Signals and Systems sells 6 in-app purchases, starting at $9.99 per month. Steiner Tree asks for nothing beyond the download.
Steiner Tree ships an update every 45 months, Signals and Systems every 5 weeks. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.
| Parameter | Steiner Tree | Signals and Systems |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 45 months | Every 5 weeks โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 12.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 1 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Reinhard MAENNER | Forwa Elade Wunde |
In-app purchases
Steiner Tree
No in-app purchases
Signals and Systems
- 1 Month$9.991 Month
- 6 Months$19.996 Months
- 1 Year$29.991 Year
- 1500$0.99
- 3500$1.99
- 9000$3.99
Questions
Is Steiner Tree free?
Is Signals and Systems free?
Do Steiner Tree or Signals and Systems have ads?
Which is updated more often, Steiner Tree or Signals and Systems?
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