Comparison

Binomial Probability P(X=k) vs Electrolyte Equilibria

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

Head to head
About

Binomial Probability P(X=k)

Features
Read full description

Get your homework done instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and compute P(X=k) with probability tree, histogram, and distribution function. HOW IT WORKS Enter your values in the right fields and get started. You’ll get the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features you use - how many solutions you generate This helps us improve. We can’t identify you. COSTS Everything is free to use. 24/7 access to your solutions. All steps are always fully shown. If you need many solutions in a short time, different purchase options are available. EXTRAS - curated learning videos - feedback for incorrect inputs - manage your own solutions - app introduction CONTACT Questions and feedback via Discord or directly in the app review.

About

Electrolyte Equilibria

Features
Read full description

The Electrolyte Equilibria application is designed to calculate the equilibrium composition of multicomponent aqueous electrolyte solutions based on known thermodynamic equilibrium constants and the analytical concentrations of the solution components. The application uses a universal approach that describes the system of equilibria in matrix form, enabling a unified calculation scheme regardless of the type of equilibrium process or the problem's complexity. The program is based on real-world algorithms for precise chemical calculations used in professional environments. Equilibria calculations are possible for both simple systems—single-component solutions with a single equilibrium process—and for multicomponent solutions with virtually no limit to the number of equilibrium reactions. The calculations account for ion-ion interactions through the solution's ionic strength and activity coefficients, implemented iteratively. The results of equilibrium composition calculations for multicomponent solutions are presented in a table that includes the equilibrium concentrations of all particles, the ionic strength of the solutions, and the activity coefficients of ions with different charge types. The equilibrium composition calculation procedure is implemented by solving a system of nonlinear equations. When studying a series of solutions, a graphical illustration of the dependence of the equilibrium particle concentrations on the concentration of any selected component is provided. Electrolyte Equilibria is an application for modeling and analyzing chemical equilibria in complex multicomponent systems. It is a powerful analytical tool designed for chemists, researchers, teachers, and students studying the diverse physicochemical properties of solutions that depend on their equilibrium composition. The mobile version of the program provides accurate, reliable solutions whether you are in the lab or the classroom. This application provides accurate real-time calculations, beautifully visualizes equilibrium-composition diagrams, offers a straightforward interface, and enables data collection and analysis for any study. The application supports data import and export, including graphs, and supports dark and light theme options. The application can be helpful for teachers and students. It is ideal for modeling equilibria in complex systems in the research practice of students and chemical researchers for both educational and scientific purposes.

Screenshots

Binomial Probability P(X=k)4 screens
Electrolyte Equilibria4 screens

Verdict

The call

The clearest difference is in-app purchases: Electrolyte Equilibria at none against Binomial Probability P(X=k)'s 8. Binomial Probability P(X=k)'s advantage is update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Binomial Probability P(X=k) sells 8 one-off in-app purchases. Electrolyte Equilibria asks for nothing beyond the download.

UpkeepUpdate frequency

Binomial Probability P(X=k) ships an update every 3 weeks, Electrolyte Equilibria every 3 months. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.

Scorecard2 real differences · 4 level
Binomial Probability P(X=k) versus Electrolyte Equilibria: the parameters behind the verdict, then further details
ParameterBinomial Probability P(X=k)Electrolyte Equilibria
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size180 MB108 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbROleksandr Rubtsov

In-app purchases

8 purchases

Binomial Probability P(X=k)

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +2 Convenience Tokens / 6h, max. +4$0.99
Show 5 more
  • +150 User Tokens$0.99
  • +300 User Tokens$1.49
  • +4 Convenience Tokens / 6h, max. +8$1.59
  • Lifetime Access$1.99
  • Remove Ads$1.99
None

Electrolyte Equilibria

No in-app purchases

Questions

Is Binomial Probability P(X=k) free?
Binomial Probability P(X=k) is free to download, with in-app purchases available.
Is Electrolyte Equilibria free?
Electrolyte Equilibria is free to download, with no in-app purchases.
Do Binomial Probability P(X=k) or Electrolyte Equilibria have ads?
Neither Binomial Probability P(X=k) nor Electrolyte Equilibria shows ads.
Which is updated more often, Binomial Probability P(X=k) or Electrolyte Equilibria?
Binomial Probability P(X=k) ships an update every 3 weeks, and Electrolyte Equilibria every 3 months. Most recently, Binomial Probability P(X=k) was updated on October 2, 2026 and Electrolyte Equilibria on September 26, 2026.

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