Comparison

Baselproblem vs Probability Theory Foundations

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

Head to head
About

Baselproblem

Features
Read full description

The Basel problem is a problem in mathematical analysis with relevance to number theory, first posed by Pietro Mengoli in 1650 and solved by Leonhard Euler in 1734.

About

Probability Theory Foundations

Features
Read full description

Probability Theory Foundations is an independent study app for learners who want structured practice in core probability ideas, problem-solving habits, and exam-style reasoning. Built for students, self-learners, and anyone reviewing fundamentals, the app includes 160 questions across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. Every question includes an explanation so you can understand why an answer works, not just whether it was right. Features: - FSRS spaced-repetition intervals to help review at the right time - Weak-point heatmap to spot topics that need attention - Daily challenge for consistent practice - Mock exams for timed review - Offline practice with no login required - Explanations for every question Practice offline, no login required. Independent study app for Probability Theory Foundations practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.

Screenshots

Baselproblem1 screens
Probability Theory Foundations4 screens

Verdict

The call

Baselproblem and Probability Theory Foundations are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Baselproblem versus Probability Theory Foundations: the parameters behind the verdict, then further details
ParameterBaselproblemProbability Theory Foundations
PriceFreeFree
Update frequencyEvery 11 monthsโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 โ€” better15.1
Further details โ€” not scored
Size0 MB38 MB
Age rating4+4+
DeveloperAndreas HorvathAFTW LLC

In-app purchases

None

Baselproblem

No in-app purchases

None

Probability Theory Foundations

No in-app purchases

Questions

Is Baselproblem free?
Baselproblem is free to download, with no in-app purchases.
Is Probability Theory Foundations free?
Probability Theory Foundations is free to download, with no in-app purchases.
Do Baselproblem or Probability Theory Foundations have ads?
Neither Baselproblem nor Probability Theory Foundations shows ads.

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