NexSample: Sample Size Calc

2.2.1

JAmR Tools by M Jeeva Sankar

0.00

0 reviews

500+
Downloads

Free

Sample size calculator for clinical research. 26 calculators. Verified formulas.

NexSample: Sample Size Calc Screenshot 1 of 5

NexSample: Sample Size Calc Screenshot 2 of 5

NexSample: Sample Size Calc Screenshot 3 of 5

NexSample: Sample Size Calc Screenshot 4 of 5

NexSample: Sample Size Calc Screenshot 5 of 5

About NexSample: Sample Size Calc

NexSample: Sample Size Calc is a medical app developed by JAmR Tools by M Jeeva Sankar.

How many times has NexSample: Sample Size Calc been downloaded?

NexSample: Sample Size Calc has been downloaded 830 times. In the last 30 days, the app was downloaded 14 times.

What is the rating of NexSample: Sample Size Calc?

NexSample: Sample Size Calc has no ratings yet.

Is NexSample: Sample Size Calc free?

NexSample: Sample Size Calc is free to download. The APK download size is 23.07 MB. The latest version available is 2.2.1. The last update was on May 2, 2026.

What are the requirements for NexSample: Sample Size Calc?

The app has a content rating of Everyone. The app has been available on Google Play April 2026.

Description

NexSample is a free sample size calculator for clinical research, designed for medical residents, fellows, postgraduate students, and researchers.
It includes 26 calculators covering the most common study designs in clinical trials, observational research, and diagnostic studies–plus calculators for agreement, reliability, and regression that are hard to find elsewhere.

Whether you are planning a thesis, protocol, dissertation, grant proposal, or manuscript, NexSample helps you calculate sample size quickly and accurately, with full formulas and references shown for every calculation.

26 calculators in one app
RCT (parallel) / cohort (unmatched)
• Two independent means
• Two proportions
• One-way ANOVA (≥3 groups)
• Survival / time-to-event analysis
RCT (cross-over) / cohort (matched)
• Paired means
• Paired proportions
Non-inferiority / equivalence
• Two means
• Two proportions
Case-control
• Unmatched
• Matched
Cross-sectional
• Prevalence comparison
Descriptive
• Single proportion
• Single mean
Diagnostic studies
• Sensitivity / specificity
• Compare sensitivity / specificity of two tests
• AUC estimation
• Likelihood ratios
Agreement studies
• Cohen’s kappa
• Intraclass correlation coefficient (ICC)
• Bland–Altman method comparison
Regression / association
• Correlation coefficient
• Multiple linear regression
• Logistic regression
• Cohen’s w
Advanced
• Cluster randomized trial

Verified formulas
Each calculator has been checked against published worked examples and standard biostatistics references.

Worked examples
Every calculator includes an example that can be viewed with a single tap, helping users understand the required inputs and the expected output.

Contextual help
Built-in field-level guidance explains what to enter, including units, ranges, and interpretation.

Write-up generator
Generate a ready-to-paste sample size justification paragraph for your proposal, protocol, thesis, or manuscript.

Dropout adjustment
Use the dropout slider to adjust for anticipated attrition and see updated sample sizes instantly.

Designed for researchers
• Clean, distraction-free interface
• Works offline
• No ads, no tracking, no account required
• Formula and reference shown for every calculation

NexSample is designed to be a practical sample size calculator for researchers in clinical research, epidemiology, and medical education.

Conceived and developed by M Jeeva Sankar, drawing on years of experience in clinical research, teaching, and mentoring.

A JAmR initiative by M Jeeva Sankar and Ameya Sankar.

Recent changes:
v2.2.1 — Crash fix for users returning to the app after it was closed by the system.

Show more Show less

More data about NexSample: Sample Size Calc

Price	Free to download
Total downloads	830
Recent downloads	14
Rating	No ratings
Ranking	Not ranked
Version	2.2.1
APK size	23.1 MB
Number of libraries	?
Suitable for	Everyone
Ads	NO ads

App Performance Report

Get a detailed PDF report for NexSample: Sample Size Calc with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the NexSample: Sample Size Calc app

NexSample: Sample Size Calc compared with similar apps

Common keywords of similar apps

Sample Size Nexsample Regression Designed Researchers Studies Means Proportions Single Sankar Verified Includes Diagnostic Agreement Thesis Protocol Proposal Manuscript References Shown Rct Cohort Unmatched Cross Matched Paired Comparison Sensitivity Specificity Correlation Coefficient Worked Examples Users Required Dropout Jeeva Calculator Clinical Research Calculators Formulas Free Medical Calculation App

Keywords missing from this app

Ckd Kidney Calculations Support Tools Egfr Renal Care Reference Gfr Master Content Ai Guide Features Based Access Calculate Epi Patient Disease Rate Function Values Test Recent Score Formula Mdrd Peptide Easy Information Height Healthcare Practice Comprehensive Risk Body Gault Stage Health

Downloads over time

Subscribe to see download velocity and history

NexSample: Sample Size Calc has been downloaded 830 times. Over the past 30 days, it has been downloaded 14 times.

Changelog of NexSample: Sample Size Calc

Show changelog

Developer information for JAmR Tools by M Jeeva Sankar

JAmR Tools by M Jeeva Sankar

jamr.tools@gmail.com

Legal name:

Address:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on NexSample: Sample Size Calc for Android

We don't have enough comments to show example comments. Please check back later.

Google Play Rankings for NexSample: Sample Size Calc

This app is not ranked

Technologies used by NexSample: Sample Size Calc

3 permissions

Subscribe to see full permission and library details

Top new apps Apps other people are watching Popular Medical Apps Apps on sale Today's trending apps

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps