# Power Analysis vs RPN

Power Analysis and RPN both sit at 5.0 stars, but that hides the real split: 100% of RPN's written reviews are positive against 50% of Power Analysis's. RPN also leads on price ($1.99 vs $4.99) and ratings volume (14 vs 3). Power Analysis's advantage is iOS requirement (9.0 vs 12.0). On rating, update cadence, ads and in-app purchases there is nothing between them.

Power Analysis costs $4.99 and RPN $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Power Analysis against 5.0 for RPN. Both are backed by a comparable volume of ratings — 3 and 14 respectively. Written reviews are what separate them: 50% of Power Analysis's written reviews are positive against 100% of RPN's.

Power Analysis ships an update every 4 months, RPN every 3 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Power Analysis | RPN |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/power-analysis/id441831752/reviews) | [5.0 (14 ratings)](https://appshunter.io/ios/app/rpn-34-ce/id1448593029/reviews) |
| Number of ratings | 3 | **14** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 3 MB | 16 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [A&X Analytics, LLC](https://appshunter.io/developer/436525441) | [CuVee Software](https://appshunter.io/developer/424873503) |

## What reviewers say

### Power Analysis

[App page](https://appshunter.io/ios/app/power-analysis/id441831752)

Design experiments and analyze data with confidence, even without extensive statistical knowledge. This app guides you through planning studies, determining necessary sample sizes, and understanding measurement quality. It supports various distribution types and automatically selects appropriate statistical tests.

**Highlights:** Guided experiment design, Sample size determination, Measurement quality assessment, Support for various distributions, Automatic statistical test selection, Interactive parameter adjustment

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

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn-34-ce/id1448593029)

This app simulates a legendary scientific calculator, offering photo-realistic visuals and advanced functions like integration and root finding. It includes built-in programs and extensions for enhanced usability, making it a powerful tool for complex calculations.

**Highlights:** Photo-realistic look-and-feel, Programmable with 999 steps, Integration and root solving, Built-in application programs, Live register view, Program library and backup, Sharing via email, AirDrop, Dropbox

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Power Analysis free?

Power Analysis costs $4.99, with no in-app purchases.

### Is RPN free?

RPN costs $1.99, with no in-app purchases.

### Which has better reviews, Power Analysis or RPN?

Power Analysis and RPN are both rated 5.0 out of 5 on the App Store, from 3 and 14 ratings respectively.

### Do Power Analysis or RPN have ads?

Neither Power Analysis nor RPN shows ads.

### Which is updated more often, Power Analysis or RPN?

Power Analysis ships an update every 4 months, and RPN every 3 months. Most recently, Power Analysis was updated on October 9, 2026 and RPN on October 24, 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.*