Best N4Studies Plus Apps

250+ iOS apps curated and reviewed

4.4 avg rating

18 free apps

Updated November 2026

Out of 250+ n4studies plus apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top N4Studies Plus Apps (November 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	n4Studies Plus	$7.99	3.0★ (1)	No	No	Oct 2026
2	n4Studies	$1.99	5.0★ (1)	No	No	Jun 2026
3	Sample Size Calculator - light	Free	—	No	No	Oct 2026
4	IntroStat - Statistics Solver	Free	4.9★ (24)	Yes	Yes	May 2026
5	Smata: Study Smarter	Free	5.0★ (26)	No	No	Nov 2026
6	R Discovery: Academic Research	Free	4.8★ (926)	No	Yes	Nov 2026
7	Laureata: Study Simplified	Free	4.6★ (8)	No	Yes	Oct 2026
8	NurseCalcs	Free	4.5★ (8)	No	No	Oct 2026

Top Picks for N4Studies Plus

#1

n4Studies Plus by Chetta Ngamjarus

n4Studies Plus

Editor's Choice

3.0(1 ratings)

$7.99

n4Studies Plus screenshot 1

n4Studies Plus screenshot 2

n4Studies Plus screenshot 3

n4Studies Plus screenshot 4

n4Studies Plus screenshot 5

This app simplifies sample size and study power calculations for various research designs. It offers tools for regression, survival analysis, diagnostic studies, and more, helping users find calculations in minutes.

#2

n4Studies by Chetta Ngamjarus

n4Studies

Strong Contender

5.0(1 ratings)

$1.99

n4Studies screenshot 1

n4Studies screenshot 2

n4Studies screenshot 3

n4Studies screenshot 4

n4Studies screenshot 5

This application simplifies sample size and study power calculations for various research designs. It offers tools for estimating population means and proportions, comparing groups, and analyzing different study types like case-control and randomized controlled trials. Results can be easily shared via email.

#3

Sample Size Calculator - light by Relief Applications

Worth Considering

📊 Productivity

0.0(0 ratings)

Free

Sample Size Calculator - light screenshot 1

Sample Size Calculator - light screenshot 2

Sample Size Calculator - light screenshot 3

Sample Size Calculator - light screenshot 4

Sample Size Calculator - light screenshot 5

Sample Size Calculator - light screenshot 6

More N4Studies Plus apps to explore

IntroStat - Statistics Solver

IntroStat - Statistics Solver

IntroStat - Statistics Solver

Statistics Calculator

This app serves as a comprehensive statistics calculator and learning tool for introductory statistics courses. It offers a wide range of calculation features, data visualization, and an integrated textbook with formulas and examples.

Summary statistics calculationData visualization (boxplots, histograms)Probability calculations

free with in-app purchases

Smata: Study Smarter

Smata: Study Smarter

Smata: Study Smarter

Studying, but social

Enhance your study sessions with this social platform. Track your progress, block distractions, and connect with friends to see their live study habits. Compete on leaderboards and encourage each other's academic efforts.

Track study sessionsBlock distracting appsView friends' live study activity

🌐 Social Networking

R Discovery: Academic Research

R Discovery: Academic Research

R Discovery: Academic Research

Access 300M+ research papers

Access and discover over 300 million research papers with AI-powered tools. Understand findings, chat with PDFs, and organize your academic library. Stay current in your field with personalized feeds and alerts.

Discover 300M+ research papersAI-powered research workflowsChat with PDFs

Laureata: Study Simplified

Laureata: Study Simplified

Laureata: Study Simplified

College Flashcards & Quizzes

This app helps college students master their courses with expert-curated study materials and smart learning tools. It offers flashcards, quizzes, and the ability to generate study aids from personal notes to improve understanding and track progress.

Course-specific study packsFlashcards and multiple choice quizzesGenerate study materials from notes

Calculations for Nurses

This utility app helps nurses perform essential unit conversions for medication dosages. It quickly calculates the correct amount of medication to draw based on patient weight and available concentration.

Unit conversions for nursingCalculate medication dosageBased on mg per kg

Nursing School & NCLEX Prep

Nursing School & NCLEX Prep

Nursing School & NCLEX Prep

Exam Prep with SimpleNursing

Prepare for nursing school and NCLEX exams with engaging video lessons, comprehensive study guides, and a large question bank. Developed by healthcare professionals, this app uses visual learning aids and detailed rationales to help students master concepts and improve critical thinking skills for exam success.

1,200+ instructional videos with test tips900+ comprehensive study guides4,000+ NCLEX-RN/PN practice questions

free with in-app purchases

Study cards by topic

Create custom study cards organized by topic to prepare for exams. This app guides you through your learning process, helping you achieve academic success efficiently.

Customizable study cardsTopic-based organizationGuided study process

STATS™ Mobile

Statistical Calculators

This application offers essential statistical calculators for marketing researchers and students. It provides tools for summary statistics, sample size determination, standard error calculations, and significance testing, with clear explanations of formulas.

Summary statistics for CSV filesSample size determinationStandard error of proportion

📊 Productivity

Cognito - Universal Study App

Cognito - Universal Study App

Cognito - Universal Study App

Flashcards, Exams, Notes

Create and practice interactive study materials like flashcards and practice tests. This platform offers a fast and affordable way to prepare for exams with unlimited access to content creation and study tools.

Create flashcardsPractice testsStudy guides

by Medidata Solutions Worldwide

Manage all your clinical trial activities from one place. Receive timely notifications for upcoming tasks and review your schedule for better planning. Participate in trials conveniently from home or on the go.

Complete clinical trial activitiesReceive activity notificationsReview upcoming and past activities

💪 Health & Fitness

Respond by Lyssna

Respond by Lyssna

Respond by Lyssna

Take part in research

📊 Productivity

Studizy: AI Study Sheets

Studizy: AI Study Sheets

Studizy: AI Study Sheets

Turn any course into a sheet

Transform your study materials into interactive flashcards, quizzes, and podcasts. This app personalizes learning content to suit visual, auditory, and kinesthetic learners, making studying faster and more effective.

Create personalized study contentInteractive flashcardsCustom quizzes

free with in-app purchases

Study Circle - The Focus App

Study Circle - The Focus App

Study Circle - The Focus App

Timer & Tasks with Friends!

This app helps users boost motivation and make studying enjoyable by connecting them with friends. It offers a focus timer, progress visualization, and a community feature for mutual support and encouragement during study sessions.

Virtual study circles with friendsIntuitive study timerSend encouragement and support messages

free with in-app purchases

Scrible Extension

Scrible Extension

Scrible Extension

Save, annotate, tag articles

This browser extension allows users to save, highlight, and comment on web pages, PDFs, and articles. It integrates with a cloud-based research platform to organize and search saved content, offering features like automatic citation capture and bibliography creation for educational users.

Save webpages, PDFs, and articles instantlyHighlight key passagesAdd comments and thoughts

📊 Productivity

This app helps clinical trial participants manage their study journey. It allows users to track payments, submit expenses, complete questionnaires, schedule appointments, and view travel details, all from a single platform.

Stipend and reimbursement trackingExpense submission with receipt imagesQuestionnaire completion (offline capable)

Radicle Science Connect

Radicle Science Connect

Radicle Science Connect

by Radicle Science, Inc.

Participate in scientific research studies directly from your phone. Complete surveys, track study progress, and connect wearable devices to contribute valuable data. Receive helpful notifications and access your study history with secure sign-in.

Secure sign-in without passwordsTrack study progress and activitiesComplete surveys in-app

💪 Health & Fitness

by SONA SYSTEMS OU

This mobile application grants users access to the Sona Systems platform. It is designed for participants, researchers, and principal investigators, requiring the specific URL of a Sona site for functionality.

Access Sona SystemsFor participantsFor researchers

📊 Productivity

FAQ about N4Studies Plus

What are the best n4studies plus apps for iPhone?

n4Studies Plus tops our n4studies plus apps ranking as of November 2026, with a 3.0-star average from 1 App Store ratings, and it's priced at $7.99.

Are there free n4studies plus apps for iPhone?

Yes — 18 of the top n4studies plus apps we rank are free to download, including Sample Size Calculator - light and IntroStat - Statistics Solver.

Does n4Studies Plus have ads or in-app purchases?

n4Studies Plus has no ads and has no in-app purchases, according to its App Store listing as of November 2026.

How many n4studies plus apps are on the App Store?

We track 250+ n4studies plus apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.