Comparison

Binomial Probability P(X=k) vs EqCalc

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

EqCalc

Features
Read full description

EqCalc‑G is an educational and engineering reference tool for calculating gaseous chemical equilibrium using Gibbs free‑energy minimization. Designed for students, researchers, and practicing engineers, the app provides a fast, portable way to explore equilibrium behavior in hydrogen and hydrocarbon systems under ideal‑gas assumptions. Key Features: • Includes a publicly available thermochemical dataset derived from NASA curve‑fits of the NIST‑JANAF tables for selected species • Import your own thermochemical datasets in Aerotherm, Chemkin, or NASA CEA formats • Flexible reactant specification:
 - Define mixtures on a mole or mass basis - Or specify fuel mixture, air, and fuel‑air equivalence ratio • Export results easily by copying output to the clipboard for use in your favorite notes or spreadsheet apps Basic vs. Plus Version: The free Basic version supports fixed enthalpy and pressure equilibrium calculations.
Upgrade to Plus version to unlock additional problem types: • Fixed temperature & pressure • Fixed entropy & pressure • Fixed internal energy & volume • Fixed temperature & volume • Fixed entropy & volume NASA/NIST Notice: Use of NASA and NIST thermochemical data does not imply endorsement, certification, recommendation, or approval of this app, its developer, or any results produced. NASA and NIST provide no warranties and assume no liability for the use of their data within this app. Privacy Policy: https://jtonouchi.github.io/EqCalc-G/privacy Terms and Conditions: https://jtonouchi.github.io/EqCalc-G/terms

Screenshots

Binomial Probability P(X=k)4 screens
EqCalc3 screens

Verdict

The call

The clearest difference is update cadence: Binomial Probability P(X=k) at every 3 weeks against EqCalc's every 2 months. Binomial Probability P(X=k) also leads on iOS requirement (15.0 vs 18.2). On price, ads, in-app purchases and device support 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 and EqCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Binomial Probability P(X=k) ships an update every 3 weeks, EqCalc every 2 months. The most recent releases landed on November 10, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 4 level
Binomial Probability P(X=k) versus EqCalc: the parameters behind the verdict, then further details
ParameterBinomial Probability P(X=k)EqCalc
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.2
Further details — not scored
Size180 MB11 MB
Age rating4+17+
DeveloperGlindemann, Sennoun, Langer GbRJon Tonouchi

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
1 purchases

EqCalc

One-time1
  • Plus Version$2.99

Questions

Is Binomial Probability P(X=k) free?
Binomial Probability P(X=k) is free to download, with in-app purchases available.
Is EqCalc free?
EqCalc is free to download, with in-app purchases available.
Do Binomial Probability P(X=k) or EqCalc have ads?
Neither Binomial Probability P(X=k) nor EqCalc shows ads.
Which is updated more often, Binomial Probability P(X=k) or EqCalc?
Binomial Probability P(X=k) ships an update every 3 weeks, and EqCalc every 2 months. Most recently, Binomial Probability P(X=k) was updated on November 10, 2026 and EqCalc on November 5, 2026.

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