# n4Studies Plus vs ACNS Webinars

The clearest difference is price: ACNS Webinars at Free against n4Studies Plus's $7.99. ACNS Webinars also leads on device support (3 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

ACNS Webinars is free to download; n4Studies Plus costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | n4Studies Plus | ACNS Webinars |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/n4studies-plus/id6450650727/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | — |
| Size | 16 MB | 24 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Chetta Ngamjarus](https://appshunter.io/developer/680516904) | [Quarous Technologies Pvt.Ltd](https://appshunter.io/developer/1458313568) |

## What reviewers say

### n4Studies Plus

[App page](https://appshunter.io/ios/app/n4studies-plus/id6450650727)

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.

**Highlights:** Sample size calculation for regression, Sample size for survival analysis, Sample size for diagnostic and cross-over studies, Sample size for population means and proportions, Sample size for case-control and cohort studies, Study power calculations, Email output sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### ACNS Webinars

[App page](https://appshunter.io/ios/app/acns-webinars/id6789080667)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is n4Studies Plus free?

n4Studies Plus costs $7.99, with no in-app purchases.

### Is ACNS Webinars free?

ACNS Webinars is free to download, with no in-app purchases.

### Do n4Studies Plus or ACNS Webinars have ads?

Neither n4Studies Plus nor ACNS Webinars shows ads.

### Which is updated more often, n4Studies Plus or ACNS Webinars?

n4Studies Plus ships an update every 2 months, and ACNS Webinars every 2 months. Most recently, n4Studies Plus was updated on October 14, 2026 and ACNS Webinars on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*