# RPN vs Constructive Calculator

The clearest difference is price: Constructive Calculator at Free against RPN's $4.99. Constructive Calculator also leads on update cadence (every 8 days vs every 3 months). RPN's advantage is ratings volume (11 vs 1) and iOS requirement (12.0 vs 16.0). On rating, ads, in-app purchases and device support there is nothing between them.

Constructive Calculator is free to download; RPN costs $4.99 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 — 4.9 for RPN against 5.0 for Constructive Calculator. That said, the two scores are not equally well evidenced: RPN has 11 ratings behind it against 1, so its average is the more settled of the two.

RPN ships an update every 3 months, Constructive Calculator every 8 days. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RPN | Constructive Calculator |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.9 (11 ratings)](https://appshunter.io/ios/app/rpn-97-pro/id816249055/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/constructive-calculator/id6778157421/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Paid | **Free** |
| Size | 75 MB | 1 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPad | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Dmitriy Mayorov](https://appshunter.io/developer/6778157423) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-97-pro/id816249055)

This app simulates a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run programs, manage virtual cards, and access hundreds of free program cards from its website.

**Highlights:** Virtual program and data cards, Virtual paper tape printer, Database-driven card manager, Create, label, and organize unlimited cards, Effortless saving of card collections, Formatted program listings, Live display of stack and registers

**Features:** macOS Compatibility

**In-app purchases:** none


### Constructive Calculator

[App page](https://appshunter.io/ios/app/constructive-calculator/id6778157421)

This calculator performs calculations with arbitrary precision, avoiding rounding errors common in standard calculators. It provides an extensive scientific keypad and can display an unlimited number of digits for exact results.

**Highlights:** Arbitrary-precision calculations, Unlimited digit display, Scientific keypad, Exact results for large numbers, Running tape of calculations, Locale-aware digit grouping

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is Constructive Calculator free?

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

### Which has better reviews, RPN or Constructive Calculator?

Constructive Calculator is rated higher. RPN averages 4.9 out of 5 from 11 ratings, while Constructive Calculator averages 5.0 from 1 ratings.

### Do RPN or Constructive Calculator have ads?

Neither RPN nor Constructive Calculator shows ads.

### Which is updated more often, RPN or Constructive Calculator?

RPN ships an update every 3 months, and Constructive Calculator every 8 days. Most recently, RPN was updated on October 20, 2026 and Constructive Calculator on October 28, 2026.

---

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