Probability vs StudySpotFinder
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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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.
StudySpotFinder
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Miami Study Spots is the easiest way to find your next favorite place to study on and around Miami University's campus. Whether you need dead silence before a final or a lively coffee shop energy to grind through a group project, Miami Study Spots helps you find the right environment fast. Browse a list of student-reviewed study locations, check the noise level and seating capacity at a glance, and read real descriptions written by students who actually use these spots. Every spot includes the details that actually matter — how loud or quiet it is, how many seats are available, and an honest description of what to expect when you get there. No guessing, no wasted trips across campus to find every seat taken or the place louder than expected. Think a spot is missing? Add it yourself. Miami Study Spots is crowd-sourced and community-driven. If you know a hidden gem — a quiet floor in a building most people overlook, a café that's always half-empty — add it in seconds. Just drop the name, seat count, noise level, and a quick description and it's live for the whole Miami community to find. Miami Study Spots is designed to be simple. No accounts, no setup, no clutter. Open the app, find a spot, go study.
Screenshots
Verdict
The clearest difference is price: StudySpotFinder at Free against Probability's $1.99. StudySpotFinder also leads on update cadence (fortnightly vs every 3 months). Probability's advantage is chart position (#180 vs unranked) and iOS requirement (14.0 vs 16.4). On 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
StudySpotFinder is free to download; Probability costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Probability ships an update every 3 months, StudySpotFinder fortnightly. The most recent releases landed on October 2, 2026 and September 12, 2026 respectively.
| Parameter | Probability | StudySpotFinder |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.9 (193 ratings) — better | — |
| Positive reviews | 97.2% of reviews | — |
| Number of ratings | 193 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #180 — better | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 2 MB | 0 MB |
| Age rating | 17+ | 4+ |
| Developer | Matthew Bognar | Owen Miller |
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
StudySpotFinder
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Probability
No in-app purchases
StudySpotFinder
No in-app purchases
Questions
Is Probability free?
Is StudySpotFinder free?
Do Probability or StudySpotFinder have ads?
Which is updated more often, Probability or StudySpotFinder?
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