Probability vs Venn Diagram Shader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Compute probabilities
- Determine percentiles
- Plot probability density function
- Plot probability mass function
- Supports 10+ continuous distributions
- Supports 5+ discrete distributions
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Replace your statistical tables with an interactive, graphical app! Compute probabilities & percentiles, and plot the probability density/mass function for the Beta, Chi-Square, Exponential, F, Gamma, Gumbel, Logistic, Lognormal, Normal, Pareto, t, Triangular, Uniform, Weibull, Binomial, Geometric (2 versions), Hypergeometric, Negative Binomial (2 versions), and Poisson distributions. Now supports Español.
Venn Diagram Shader
Create and shade Venn diagrams with up to seven sets. This mathematical tool automatically generates set notation expressions and provides step-by-step shading instructions for algebraic expressions. Export your diagrams for further editing.
- Create Venn diagrams (1-7 sets)
- Shade or unshade areas
- Automatic set notation display
- Step-by-step shading for expressions
- Supports subsets and disjoint sets
- Customizable colors
- Save and share diagrams
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--- Note: This app is intended as a mathematical tool. It is not a painting tool, hence you will be able to annotate drawings or shade different areas with different colors. Nevertheless, you may export Venn diagrams from this app into your favorite app for editing. --- Venn Diagram Shader allows you to create and shade Venn diagrams and get the equivalent expression in set notation! You may even enter an algebraic expression and Venn Diagram Shader will give you step-by-step instructions on how to shade! Features: - Supports Venn diagrams with 1 to 7 sets - Create your own Venn diagrams or select from 18 preset diagrams - Easy Venn diagram editor that allows creating beautiful and well-aligned Venn diagrams - Touch to shade or unshade areas - Automatically displays equivalent set notation expressions - Enter an expression and view step-by-step instructions on how to shade the Venn diagram - Support for Venn diagrams with subsets and disjoint sets - Support all sets operations and constants: complement, intersection, union, set difference, relative complement, symmetric difference, universality, empty set - Customize color for shading and other Venn diagram elements - Save and share Venn diagrams
Screenshots
Verdict
The clearest difference is review sentiment: Probability at 97% against Venn Diagram Shader's 26%. Probability also leads on rating (4.9 vs 4.0) and monetization model (free vs paid). Venn Diagram Shader's advantage is update cadence (every 5 days vs every 3 months) and device support (3 vs 1). On price, ads and in-app purchases 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
Probability costs $1.99 and Venn Diagram Shader $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Probability holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Probability has 193 ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 97% of Probability's written reviews are positive against 26% of Venn Diagram Shader's.
Probability ships an update every 3 months, Venn Diagram Shader every 5 days. The most recent releases landed on November 11, 2026 and November 1, 2026 respectively.
| Parameter | Probability | Venn Diagram Shader |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 4.9 (193 ratings) — better | 4.0 (21 ratings) |
| Positive reviews | 97.2% of reviews — better | 26.3% of reviews |
| Number of ratings | 193 — better | 21 |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 11 MB |
| Age rating | 17+ | 4+ |
| Developer | Matthew Bognar | Ketan Appa |
Customer experience
Probability
Venn Diagram Shader
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
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- Add options after graph rendering (area above, between, outside values)
- Consistent terms for df across distributions
Venn Diagram Shader
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Probability
No in-app purchases
Venn Diagram Shader
No in-app purchases
Questions
Is Probability free?
Is Venn Diagram Shader free?
Which has better reviews, Probability or Venn Diagram Shader?
Do Probability or Venn Diagram Shader have ads?
Which is updated more often, Probability or Venn Diagram Shader?
Other comparisons
