Comparison

Equation vs Signals and Systems

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

Head to head
About

Equation

Features
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The EquationSolver is carefully designed to be a simple and elegant app. Easy to use, easy to understand, simple and effective It solves system of linear equations, simultaneous linear equations (no limit on the number of equations). It also teaches you the steps to solve such systems. To find a solution, it uses Matrix inversion method or LU decomposition method when inverse is not possible or complicated. The equations are beautifully presented in both: 1) Set of individual equations form 2) Matrix-vector product form. You can also share the beautifully written solution It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This is a perfect app if you are a student learning to solve these kind of equations. There is also a Study page to help you with learning some important linear algebra formulas. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

About

Signals and Systems

Features
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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!

Screenshots

Equation4 screens
Signals and Systems4 screens

Verdict

The call

The clearest difference is price: Signals and Systems at Free against Equation's $1.99. Equation's advantage is in-app purchases (none vs 6) and device support (3 vs 1). On update cadence 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Signals and Systems is free to download; Equation costs $1.99 up front. Signals and Systems sells 6 in-app purchases, starting at $9.99 per month. Equation asks for nothing beyond the download.

UpkeepUpdate frequency

Equation ships an update monthly, Signals and Systems every 5 weeks. The most recent releases landed on August 16, 2026 and September 5, 2026 respectively.

Scorecard4 real differences ยท 2 level
Equation versus Signals and Systems: the parameters behind the verdict, then further details
ParameterEquationSignals and Systems
Price$1.99Free โ€” better
Update frequencyMonthly โ€” betterEvery 5 weeks
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.1 โ€” better17.0
Further details โ€” not scored
Size30 MB18 MB
Age rating4+4+
DeveloperOm Prakash ChapagainForwa Elade Wunde

In-app purchases

None

Equation

No in-app purchases

6 purchases

Signals and Systems

Subscriptions3
  • 1 Month$9.991 Month
  • 6 Months$19.996 Months
  • 1 Year$29.991 Year
One-time3
  • 1500$0.99
  • 3500$1.99
  • 9000$3.99

Questions

Is Equation free?
Equation costs $1.99, with no in-app purchases.
Is Signals and Systems free?
Signals and Systems is free to download, with in-app purchases available.
Do Equation or Signals and Systems have ads?
Neither Equation nor Signals and Systems shows ads.
Which is updated more often, Equation or Signals and Systems?
Equation ships an update monthly, and Signals and Systems every 5 weeks. Most recently, Equation was updated on August 16, 2026 and Signals and Systems on September 5, 2026.

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