Comparison

iFactorAnalysis™ Lite vs Grammar Check

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

Grammar Check

Enhance your writing with advanced tools for spelling and grammar correction. This app offers an intuitive interface for refining essays, articles, and papers, making English language corrections fast and effective.

Highlights
  • Spelling and grammar correction
  • Punctuation checking
  • Essay and article refinement
  • Adverb and adjective analysis
  • Verb and tense identification
  • Idiom and phrase explanations
Features
Read full description

Introducing the ultimate Grammar Checker app, meticulously designed by our expert team to enhance your writing. Perfect for reviewing articles, essays, and papers, this app offers an advanced suite of tools to refine spelling and grammar errors seamlessly. With its intuitive design and user-friendly interface, our Grammar Checker app stands out as your go-to solution for fast and effective English language corrections. Grammar is the backbone of effective communication, helping us connect words into sentences that make sense. It involves understanding the role of words, their correct placement, and how they combine to express clear ideas. While most people use grammar daily, either in writing or speech, mastering it can be challenging, especially for non-native English speakers. Looking to perfect an essay or elevate the professionalism of your business presentations? Our app provides an easily accessible English grammar and spelling checker that’s just a tap away. Search for terms like "grammar corrector," "check my grammar," or "correct my grammar" in the App Store, and choose our comprehensive app designed specifically for your needs. App Features: Articles, Adverbs, and Adjectives Active or Passive Voice Auxiliary Verbs Conjunctions and Conditionals Determiners Interjections and Idioms Nouns and Pronouns Phrases and Prepositions Question Tags and Quantifiers Reported Speech Tenses, Verbs, and much more Download the Grammar Checker now and start improving your English grammar today! If you find our app useful, please consider sharing it with friends and family and giving it a five-star rating. We look forward to your feedback and are excited to help you on your journey to better grammar. Unlock even more creativity with our subscription plans: • Monthly Plan: Access all premium features for a month. Perfect for exploring advanced tools and generating high-quality content. Auto-renews until canceled. • Weekly Plan: Try out premium features for a week. Ideal for short-term projects or trying out new functionalities. Auto-renews until canceled. • Yearly Plan: Enjoy uninterrupted access for a whole year. Best value for committed creators seeking continuous use of all features. Auto-renews until canceled. Privacy Policy : https://docs.google.com/document/d/1aKIEI7hX0nCTCVy9V2n7iXmb1bynerg6DEcdXZiIRpA/edit?usp=sharing Terms of Use : https://docs.google.com/document/d/1BLD2bLhDO8n0SV_ZCP2aryM3ZgN15P9g5I-z2XbB2-8/edit?usp=sharing

Screenshots

iFactorAnalysis™ Lite4 screens
Grammar Check4 screens

Verdict

The call

The clearest difference is in-app purchases: iFactorAnalysis™ Lite at none against Grammar Check's 3. iFactorAnalysis™ Lite also leads on iOS requirement (13.0 vs 15.6). Grammar Check's advantage is update cadence (every 5 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. Grammar Check sells 3 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, Grammar Check every 5 weeks. The most recent releases landed on May 22, 2026 and July 20, 2026 respectively.

Scorecard3 real differences · 7 level
iFactorAnalysis™ Lite versus Grammar Check: the parameters behind the verdict, then further details
ParameteriFactorAnalysis™ LiteGrammar Check
PriceFreeFree
Rating—3.7 (3 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 8 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size18 MB16 MB
Age rating4+12+
DeveloperAcurasoft Inc.Nabeel Nasir

In-app purchases

None

iFactorAnalysis™ Lite

No in-app purchases

3 purchases

Grammar Check

Subscriptions3
  • Weekly Plan$4.997 Days
  • Monthly Plan$9.991 Month
  • Yearly Plan$19.991 Year

Questions

Is iFactorAnalysis™ Lite free?
iFactorAnalysis™ Lite is free to download, with no in-app purchases.
Is Grammar Check free?
Grammar Check is free to download, with in-app purchases available.
Do iFactorAnalysis™ Lite or Grammar Check have ads?
Neither iFactorAnalysis™ Lite nor Grammar Check shows ads.
Which is updated more often, iFactorAnalysis™ Lite or Grammar Check?
iFactorAnalysis™ Lite ships an update every 8 months, and Grammar Check every 5 weeks. Most recently, iFactorAnalysis™ Lite was updated on May 22, 2026 and Grammar Check on July 20, 2026.

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