Comparison

Nautlius vs Set Theory Fundamentals

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

Head to head
About

Nautlius

This app provides a comprehensive suite of tools for STEM education and professional use. It offers engineering calculators, unit conversions, property lookups, and simulation capabilities. Students and professionals can utilize it for quick calculations and data analysis.

Highlights
  • Engineering calculators
  • Free body diagrams
  • Property lookup tables
  • Experiment simulations
  • Unit conversion
Features
Read full description

Nautilus is an engineering and STEM toolbox for students and professionals. Features: - Engineering Calculators: Choose from hundreds of equations and subjects for quick calculations - Free Body Diagrams: Quickly copy and paste free body diagrams with calculated values - Property Lookup: Easily find values from tables and properties - Simulations: Run your own simulations for various experiments - Unit Conversion: Convert between hundreds of units Nautilus does not contain any subscriptions or in-app purchases.

About

Set Theory Fundamentals

Features
Read full description

Set Theory Fundamentals is an independent study app for building confidence with core set theory ideas through focused practice. It is designed for students, self-learners, and anyone reviewing mathematical foundations for coursework, interviews, or exams. Practice across four topic areas: Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. Work through 160 questions covering notation, operations, relations, functions, proofs, cardinality, and common reasoning traps. Features: - FSRS spaced-repetition intervals to help you review at the right time - Weak-point heatmap to spot topics that need attention - Daily challenge for consistent practice - Mock exams for timed review - Explanation included with every question - Offline practice, no login required Practice offline, no login required. Your study flow is built for private, repeatable review. Independent study app for Set Theory Fundamentals 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

Nautlius4 screens
Set Theory Fundamentals4 screens

Verdict

The call

The clearest difference is iOS requirement: Set Theory Fundamentals at 15.1 against Nautlius's 18.0. On price, 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

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

Scorecard1 real difference · 7 level
Nautlius versus Set Theory Fundamentals: the parameters behind the verdict, then further details
ParameterNautliusSet Theory Fundamentals
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size13 MB38 MB
Age rating4+4+
DeveloperTroy HustedAFTW LLC

In-app purchases

None

Nautlius

No in-app purchases

None

Set Theory Fundamentals

No in-app purchases

Questions

Is Nautlius free?
Nautlius is free to download, with no in-app purchases.
Is Set Theory Fundamentals free?
Set Theory Fundamentals is free to download, with no in-app purchases.
Do Nautlius or Set Theory Fundamentals have ads?
Neither Nautlius nor Set Theory Fundamentals shows ads.

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