# Sample Size Calculator App vs SAPO

The clearest difference is price: SAPO at Free against Sample Size Calculator App's $0.99. SAPO also leads on update cadence (fortnightly vs every 8 months). Sample Size Calculator App's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 13.0). On review sentiment, ads and device support there is nothing between them.

SAPO is free to download; Sample Size Calculator App costs $0.99 up front. SAPO sells 2 in-app purchases, starting at $2.99 per month. Sample Size Calculator App asks for nothing beyond the download.

Sample Size Calculator App ships an update every 8 months, SAPO fortnightly. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sample Size Calculator App | SAPO |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/sample-size-calculator-app/id540050554/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 62 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LHC Apps](https://appshunter.io/developer/540050557) | [BIOMAXIMA INFORMACION Y EXPERIMENTACION CIENTIFICA SOCIEDAD LIMITADA](https://appshunter.io/developer/1794186533) |

## What reviewers say

### Sample Size Calculator App

[App page](https://appshunter.io/ios/app/sample-size-calculator-app/id540050554)

This app calculates sample sizes for statistical studies. It dynamically adjusts the sample size based on user inputs for margin of error, confidence level, population size, and proportion.

**Highlights:** Dynamic sample size calculation, Adjustable margin of error, Configurable confidence level, Population size input, Proportion input

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

**In-app purchases:** none


### SAPO

[App page](https://appshunter.io/ios/app/sapo-ai-statistical-assistant/id6741438601)

This app offers advanced statistical analysis tools for researchers and students. It includes guided test selection, modeling, data visualization, and an AI assistant for interpretation. Generate publication-ready reports and calculate sample sizes.

**Highlights:** Statistical Test Guidance, Advanced Modeling Tools, Integrated AI Assistant, Database Manager, Sample Size Calculator, Automatic PDF Reports, Data Visualization

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| Yearly subscription | $22.99 | per year |


## Frequently asked questions

### Is Sample Size Calculator App free?

Sample Size Calculator App costs $0.99, with no in-app purchases.

### Is SAPO free?

SAPO is free to download, with in-app purchases available.

### Do Sample Size Calculator App or SAPO have ads?

Neither Sample Size Calculator App nor SAPO shows ads.

### Which is updated more often, Sample Size Calculator App or SAPO?

Sample Size Calculator App ships an update every 8 months, and SAPO fortnightly. Most recently, Sample Size Calculator App was updated on October 10, 2026 and SAPO on October 14, 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.*