Comparison

iFactorAnalysis™ Lite vs Calculus

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

Head to head
About

iFactorAnalysis™ Lite

Features
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iFactorAnalysis is the first comprehensive advanced multivariate statistical package on iOS devices, for performing state-of-the-art exploratory factor analysis (EFA) and principal component analysis (PCA) on datasets of any practical size without a compromise. The app transforms iOS iPhone or iPad device into a valuable research and educational tool for educators, students, researchers and practitioners in almost any discipline from social & behavioural sciences such as sociology and psychology to medical & physical sciences. The app is packed with built-in advanced features, not available on main-stream commercial packages, such as SPSS and SAS. These include advanced factor retention techniques and unprecedented factor analysis interactivity. General Features: • Intuitive user-friendly interface design • Build projects from scratch in the app or import from externally created app project template • Fast, efficient and optimized algorithms for optimum performance • Fully interactive analysis of computed factors or components, thus allowing user to experiment with different options and settings • Extensive textual & graphical output of computations throughout the app Factor Analysis/Principal Component Analysis Features • Built-in advanced factor retention techniques such as Parallel Analysis & MAP • Horn’s parallel analysis (PA), configurable for up to 10,000 random-generated datasets, thus allowing accurate Gaussian Distribution graphs to be generated and studied. • Velicer’s Minimum Average Partials (MAP) • Cattell's Scree plots including PA base lines if PA is performed • Factor Rotation methods including orthogonal rotations such as Varimax, Orthomax, Quartimax and non-orthogonal (oblique) rotations such as direct oblimin • Factor scores methods from Thurstone’s regression method to the advanced Bartlett’s method and the sophisticated Anderson-Rubin method • Feasibility tests, including the Kaiser-Meyer-Olkin (KMO) Sampling Adequacy test and the Bartlett’s Sphericity test • Cronbach’s α (alpha) data consistency test The iFactorAnalysis app is offered in two editions, • The PRO edition, has all the features available with no restrictions. • The LITE edition (FREE), obviously has some restriction. In both editions, users may send feedback & questions, directly to iFactorAnalysis developement team. Website & links: iFactorAnalysis app website: https://www.acurasoft.com/ifactoranalysis/ End User Licence Agreement: https://www.acurasoft.com/ifactoranalysis_eula.html Privacy: https://www.acurasoft.com/ifactoranalysis_privacy.html Terms & Conditions: https://www.acurasoft.com/ifactoranalysis_terms.html

About

Calculus

This AI-powered math companion provides instant, step-by-step solutions to calculus problems. Easily input questions via photo or typing to understand derivatives, integrals, and limits.

Highlights
  • Photo solver for instant problem capture
  • Manual input for equation entry
  • Detailed step-by-step explanations
  • Instant and accurate solutions
  • Covers derivatives, integrals, limits, and more
Features
Read full description

Master calculus effortlessly with Calculus AI, your intelligent math companion designed to solve complex problems in seconds. Whether you’re working on derivatives, integrals, or limits, this AI-powered tool provides instant, step-by-step explanations to help you learn faster and study smarter. Snap a photo or type your question — Calculus AI transforms any calculus problem into a clear, detailed solution. Key Features Photo Solver: Capture any calculus problem with your camera and get instant results. Manual Input: Type equations directly for fast, accurate solutions. Step-by-Step Explanations: Understand every step with detailed breakdowns. Instant Answers: Get reliable, precise solutions in seconds. Comprehensive Coverage: Supports all major calculus topics, including: - Derivatives & Integration - Limits & Continuity - Differential Equations - Series & Sequences - Multivariable Calculus Perfect For - Students mastering calculus - Homework and assignment help - Exam and test preparation - Self-study and concept review Subscription Options: Pro Weekly – $4.99 per week (auto-renews every week) Pro Yearly – $29.99 per year (auto-renews every year) Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Payment will be charged to your Apple ID account at confirmation of purchase. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and turn off auto-renewal in your Apple ID account settings. Any unused portion of a free trial period will be forfeited when purchasing a subscription. Conquer Geometry Today Download Geometry Scanner and solve any geometry problem with visual clarity and step-by-step guidance. Terms of Use: https://sites.google.com/view/alicsystems/general/term-of-use?authuser=0 Privacy Policy: https://sites.google.com/view/alicsystems/general/privacy-policy?authuser=0 Support: https://sites.google.com/view/alicsystems/general/support?authuser=0

Screenshots

iFactorAnalysis™ Lite4 screens
Calculus3 screens

Verdict

The call

The clearest difference is in-app purchases: iFactorAnalysis™ Lite at none against Calculus's 2. iFactorAnalysis™ Lite also leads on iOS requirement (13.0 vs 15.1). Calculus's advantage is update cadence (every 2 weeks vs every 8 months). On price, ads 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. Calculus sells 2 in-app purchases, starting at $4.99 per 7 days. iFactorAnalysis™ Lite asks for nothing beyond the download.

UpkeepUpdate frequency

iFactorAnalysis™ Lite ships an update every 8 months, Calculus every 2 weeks. The most recent releases landed on October 19, 2026 and September 27, 2026 respectively.

Scorecard3 real differences · 7 level
iFactorAnalysis™ Lite versus Calculus: the parameters behind the verdict, then further details
ParameteriFactorAnalysis™ LiteCalculus
PriceFreeFree
Rating—1.0 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 8 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size18 MB36 MB
Age rating4+4+
DeveloperAcurasoft Inc.AlicSystems

In-app purchases

None

iFactorAnalysis™ Lite

No in-app purchases

2 purchases

Calculus

Subscriptions2
  • Pro Weekly3 Days trial$4.997 Days
  • Pro Yearly$19.991 Year

Questions

Is iFactorAnalysis™ Lite free?
iFactorAnalysis™ Lite is free to download, with no in-app purchases.
Is Calculus free?
Calculus is free to download, with in-app purchases available.
Do iFactorAnalysis™ Lite or Calculus have ads?
Neither iFactorAnalysis™ Lite nor Calculus shows ads.
Which is updated more often, iFactorAnalysis™ Lite or Calculus?
iFactorAnalysis™ Lite ships an update every 8 months, and Calculus every 2 weeks. Most recently, iFactorAnalysis™ Lite was updated on October 19, 2026 and Calculus on September 27, 2026.

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