# RPN vs DB48X

The clearest difference is update cadence: DB48X at every 3 weeks against RPN's every 3 months. RPN's advantage is rating (5.0 vs 4.8) and price ($1.99 vs $4.99). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

RPN costs $1.99 and DB48X $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 14 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

RPN ships an update every 3 months, DB48X every 3 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RPN | DB48X |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | **[5.0 (14 ratings)](https://appshunter.io/ios/app/rpn-34-ce/id1448593029/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/db48x/id6615086535/reviews) |
| Number of ratings | **14** | 5 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | **#142** | #189 |
| Size | 16 MB | 7 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) |

## What reviewers say

### RPN

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

**Currently charting:** #142 Top Paid · Productivity (US App Store)

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


### DB48X

[App page](https://appshunter.io/ios/app/db48x/id6615086535)

**Currently charting:** #189 Top Paid · Productivity (US App Store)

This advanced scientific calculator offers arbitrary precision computations, RPN and algebraic operations, and extensive graphing capabilities. It supports complex numbers, matrices, symbolic calculations, and over 1000 built-in functions, inspired by the HP48 series.

**Highlights:** Arbitrary precision computations, RPN and algebraic operations, Complex numbers, vectors, and matrices, Symbolic computations and numerical solving, Graphing and plotting, Engineering units and currency conversion, Built-in hyperlinked help system

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

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is DB48X free?

DB48X costs $4.99, with no in-app purchases.

### Which has better reviews, RPN or DB48X?

RPN is rated higher. RPN averages 5.0 out of 5 from 14 ratings, while DB48X averages 4.8 from 5 ratings.

### Do RPN or DB48X have ads?

Neither RPN nor DB48X shows ads.

### Which is updated more often, RPN or DB48X?

RPN ships an update every 3 months, and DB48X every 3 weeks. Most recently, RPN was updated on October 29, 2026 and DB48X on October 30, 2026.

### Which is more popular, RPN or DB48X?

RPN currently peaks at #142 in the App Store charts, and DB48X at #189. Chart position reflects recent download velocity rather than total install base.

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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.*