Comparison

Probability vs StudySpotFinder

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

StudySpotFinder

Features
Read full description

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

Probability3 screens
StudySpotFinder1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

StudySpotFinder is free to download; Probability costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Probability ships an update every 3 months, StudySpotFinder fortnightly. The most recent releases landed on October 2, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 7 level
Probability versus StudySpotFinder: the parameters behind the verdict, then further details
ParameterProbabilityStudySpotFinder
Price$1.99Free — better
Rating4.9 (193 ratings) — better—
Positive reviews97.2% of reviews—
Number of ratings193 — better—
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#180 — better—
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better16.4
Further details — not scored
Size2 MB0 MB
Age rating17+4+
DeveloperMatthew BognarOwen 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
Show 2 more
  • 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

None

Probability

No in-app purchases

None

StudySpotFinder

No in-app purchases

Questions

Is Probability free?
Probability costs $1.99, with no in-app purchases.
Is StudySpotFinder free?
StudySpotFinder is free to download, with no in-app purchases.
Do Probability or StudySpotFinder have ads?
Neither Probability nor StudySpotFinder shows ads.
Which is updated more often, Probability or StudySpotFinder?
Probability ships an update every 3 months, and StudySpotFinder fortnightly. Most recently, Probability was updated on October 2, 2026 and StudySpotFinder on September 12, 2026.

Other comparisons