# PCalc vs Convex Programmer's Calculator

The clearest difference is price: Convex Programmer's Calculator at Free against PCalc's $9.99. Convex Programmer's Calculator also leads on in-app purchases (none vs 4). PCalc's advantage is ratings volume (770 vs 6) and update cadence (every 6 weeks vs every 8 months). On rating, ads and iOS requirement there is nothing between them.

Convex Programmer's Calculator is free to download; PCalc costs $9.99 up front. PCalc sells 4 one-off in-app purchases. Convex Programmer's Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for PCalc against 4.7 for Convex Programmer's Calculator. That said, the two scores are not equally well evidenced: PCalc has 770 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 84% of PCalc's written reviews are positive against 67% of Convex Programmer's Calculator's.

PCalc ships an update every 6 weeks, Convex Programmer's Calculator every 8 months. The most recent releases landed on September 24, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | PCalc | Convex Programmer's Calculator |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.7 (770 ratings)](https://appshunter.io/ios/app/pcalc/id284666222/reviews) | [4.7 (6 ratings)](https://appshunter.io/ios/app/convex-programmers-calculator/id1021414602/reviews) |
| Number of ratings | **770** | 6 |
| Positive reviews | **83.6% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#165** | — |
| Size | 81 MB | 0 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch, Vision Pro** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TLA Systems Ltd.](https://appshunter.io/developer/284666225) | [Matthew Daigle](https://appshunter.io/developer/1021414601) |

## What reviewers say

### PCalc

[App page](https://appshunter.io/ios/app/pcalc/id284666222)

**Currently charting:** #165 Top Paid · Utilities (US App Store)

A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.

**Highlights:** Optional RPN mode, Multi-line display, Extensive unit conversions, Paper tape, Multiple undo/redo, Hexadecimal, octal, binary support, Apple Watch app

**Features:** Apple Watch app, iMessage stickers

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |
| Enormous Tip | $9.99 | one-time |


### Convex Programmer's Calculator

[App page](https://appshunter.io/ios/app/convex-programmers-calculator/id1021414602)

Convert numbers between hexadecimal, decimal, octal, and binary. Perform byte flips, bit shifts, and calculate two's complement. Features bit indicators and word grouping for improved binary readability.

**Highlights:** Number base conversion, Two's complement calculation, Byte flipping for endianness, Left and right bit shifting, Binary readability enhancements, Copy, paste, and clear functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PCalc free?

PCalc costs $9.99, and also offers in-app purchases.

### Is Convex Programmer's Calculator free?

Convex Programmer's Calculator is free to download, with no in-app purchases.

### Which has better reviews, PCalc or Convex Programmer's Calculator?

PCalc and Convex Programmer's Calculator are both rated 4.7 out of 5 on the App Store, from 770 and 6 ratings respectively.

### Do PCalc or Convex Programmer's Calculator have ads?

Neither PCalc nor Convex Programmer's Calculator shows ads.

### Which is updated more often, PCalc or Convex Programmer's Calculator?

PCalc ships an update every 6 weeks, and Convex Programmer's Calculator every 8 months. Most recently, PCalc was updated on September 24, 2026 and Convex Programmer's Calculator on June 11, 2026.

---

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