# Sample Size Calculator vs ChecklistApp

The clearest difference is in-app purchases: Sample Size Calculator at none against ChecklistApp's 1. Sample Size Calculator also leads on device support (3 vs 1) and iOS requirement (9.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. ChecklistApp sells 1 one-off in-app purchase. Sample Size Calculator asks for nothing beyond the download.

## The numbers

| Metric | Sample Size Calculator | ChecklistApp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Size | 24 MB | 6 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Relief Applications](https://appshunter.io/developer/1110805584) | [Firetruck Productions Ltd.](https://appshunter.io/developer/332498237) |

## What reviewers say

### Sample Size Calculator

[App page](https://appshunter.io/ios/app/sample-size-calculator-light/id1436831899)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChecklistApp

[App page](https://appshunter.io/ios/app/checklistapp-recurring-lists/id6811608211)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Checklists | $2.99 | one-time |


## Frequently asked questions

### Is Sample Size Calculator free?

Sample Size Calculator is free to download, with no in-app purchases.

### Is ChecklistApp free?

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

### Do Sample Size Calculator or ChecklistApp have ads?

Neither Sample Size Calculator nor ChecklistApp shows ads.

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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.*