# RPN vs DB48X

The clearest difference is rating: DB48X at 4.8 against RPN's 4.3. DB48X also leads on update cadence (every 3 weeks vs every 3 months) and chart position (#184 vs unranked). RPN's advantage is iOS requirement (12.0 vs 14.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

DB48X holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews point the same way: 90% of RPN's written reviews are positive against 100% of DB48X's.

RPN ships an update every 3 months, DB48X every 3 weeks. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | RPN | DB48X |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/rpn-67-pro/id603103972/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/db48x/id6615086535/reviews)** |
| Number of ratings | **6** | 4 |
| Positive reviews | 90.0% 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 | — | **#184** |
| Size | 78 MB | 7 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPad | **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-67-pro/id603103972)

This app is a faithful simulation of a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run existing programs, manage virtual program cards, and even print listings, all on their iPad.

**Highlights:** Virtual program and data cards, Virtual paper tape printer, Database-driven card manager, Save card collections to Mac/PC, Formatted program listings, Print listings via AirPrint, Live display of stack and registers

**Features:** macOS Compatibility

**In-app purchases:** none


### DB48X

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

**Currently charting:** #184 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 $4.99, with no in-app purchases.

### Is DB48X free?

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

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

DB48X is rated higher. RPN averages 4.3 out of 5 from 6 ratings, while DB48X averages 4.8 from 4 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 23, 2026 and DB48X on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*