# Sample Size Calculator vs Memova

The clearest difference is in-app purchases: Sample Size Calculator at none against Memova's 2. Sample Size Calculator also leads on iOS requirement (9.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Memova sells 2 in-app purchases, starting at $4.99 per month. Sample Size Calculator asks for nothing beyond the download.

Sample Size Calculator ships an update every 6 days, Memova every 2 weeks. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Sample Size Calculator | Memova |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Size | 24 MB | 38 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Relief Applications](https://appshunter.io/developer/1110805584) | [Mario Velasquez](https://appshunter.io/developer/1873429106) |

## 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


### Memova

[App page](https://appshunter.io/ios/app/memova/id6758530167)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Memova Premium | $4.99 | per month |
| Memova Premium | $34.99 | per year |


## Frequently asked questions

### Is Sample Size Calculator free?

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

### Is Memova free?

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

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

Neither Sample Size Calculator nor Memova shows ads.

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

Sample Size Calculator ships an update every 6 days, and Memova every 2 weeks. Most recently, Sample Size Calculator was updated on September 19, 2026 and Memova on September 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.*