Comparison

Probability vs Binomial Distribution Calc

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

Head to head
About

Probability

Calculate probabilities, find percentiles, and visualize probability density or mass functions for a wide range of continuous and discrete statistical distributions. Explore common distributions like normal, binomial, Poisson, and many more.

Highlights
  • Compute probabilities
  • Determine percentiles
  • Plot probability density function
  • Plot probability mass function
  • Supports 10+ continuous distributions
  • Supports 5+ discrete distributions
Features
Currently charting
Read full description

Compute probabilities, determine percentiles, and plot the probability density function for the normal (Gaussian), t, chi-square, F, exponential, gamma, beta, log-normal, Pareto, and Weibull distributions. Compute probabilities, approximate percentiles, and plot the probability mass function for the binomial, geometric, hypergeometric, Poisson, and negative binomial distributions.

About

Binomial Distribution Calc

Features
Read full description

Finish your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and calculate cumulative probabilities P(X ≤ k) and P(X > k), as well as expected value E(X), variance Var(X), and standard deviation σ – with histogram and distribution function. GET STARTED Enter your values in the correct fields and get started. You receive 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 are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COST Everything is free to use. 24/7 access to your solutions. All solution steps are always fully available. If you need many solutions in a short time, various 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.

Screenshots

Probability3 screens
Binomial Distribution Calc4 screens

Verdict

The call

The clearest difference is price: Binomial Distribution Calc at Free against Probability's $1.99. Binomial Distribution Calc also leads on update cadence (every 3 weeks vs every 3 months). Probability's advantage is in-app purchases (none vs 8) and chart position (#190 vs unranked). On 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

Binomial Distribution Calc is free to download; Probability costs $1.99 up front. Binomial Distribution Calc sells 8 one-off in-app purchases. Probability asks for nothing beyond the download.

UpkeepUpdate frequency

Probability ships an update every 3 months, Binomial Distribution Calc every 3 weeks. The most recent releases landed on September 23, 2026 and August 15, 2026 respectively.

Scorecard4 real differences · 7 level
Probability versus Binomial Distribution Calc: the parameters behind the verdict, then further details
ParameterProbabilityBinomial Distribution Calc
Price$1.99Free — better
Rating4.9 (193 ratings) — better—
Positive reviews97.2% of reviews—
Number of ratings193 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
Best chart rank#190 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.0
Further details — not scored
Size2 MB180 MB
Age rating17+4+
DeveloperMatthew BognarGlindemann, Sennoun, Langer GbR

Bugs and requests

Probability

Requested features

7 requests
  • Exam mode similar to Geogebra
  • Poisson distribution
  • Allow setting plot boundaries (e.g., for Beta distribution)
  • Make formulae available in offline mode
  • Clearly introduce parameters
Show 2 more
  • Add options after graph rendering (area above, between, outside values)
  • Consistent terms for df across distributions

Binomial Distribution Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Probability

No in-app purchases

8 purchases

Binomial Distribution Calc

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

Questions

Is Probability free?
Probability costs $1.99, with no in-app purchases.
Is Binomial Distribution Calc free?
Binomial Distribution Calc is free to download, with in-app purchases available.
Do Probability or Binomial Distribution Calc have ads?
Neither Probability nor Binomial Distribution Calc shows ads.
Which is updated more often, Probability or Binomial Distribution Calc?
Probability ships an update every 3 months, and Binomial Distribution Calc every 3 weeks. Most recently, Probability was updated on September 23, 2026 and Binomial Distribution Calc on August 15, 2026.

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