# Calc Pro HD vs Codex Calc

The clearest difference is rating: Calc Pro HD at 4.7 against Codex Calc's 4.0. Calc Pro HD also leads on ratings volume (283 vs 1) and update cadence (every 3 months vs every 6 months). Codex Calc's advantage is price ($0.99 vs $7.99) and review sentiment (100% vs 85%). On ads, in-app purchases and monetization model there is nothing between them.

Calc Pro HD costs $7.99 and Codex Calc $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calc Pro HD holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Calc Pro HD has 283 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 85% of Calc Pro HD's written reviews are positive against 100% of Codex Calc's, so the app with the better star average is not the one people write more warmly about.

Calc Pro HD ships an update every 3 months, Codex Calc every 6 months. The most recent releases landed on July 4, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Calc Pro HD | Codex Calc |
| --- | --- | --- |
| Price | $7.99 | **$0.99** |
| Rating | **[4.7 (283 ratings)](https://appshunter.io/ios/app/calc-pro-hd-top-calculator/id456661966/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/codex-calc/id505057155/reviews) |
| Number of ratings | **283** | 1 |
| Positive reviews | 85.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 50 MB | 11 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Panoramic Software Inc.](https://appshunter.io/developer/329216366) | [Driftwood Studio Software LLC](https://appshunter.io/developer/1822849713) |

## What reviewers say

### Calc Pro HD

[App page](https://appshunter.io/ios/app/calc-pro-hd-top-calculator/id456661966)

This app offers a comprehensive suite of 10 powerful calculators, including standard, scientific, graphing, and financial tools. It provides over 3000 unit conversions and daily currency updates, making it suitable for students and professionals alike for everyday calculations and complex financial tasks.

**Highlights:** 10 powerful calculators (Standard, Scientific, Graphing, Financial, etc.), Over 3000 unit conversions in 18 categories, World currencies converter with daily updates, 10 financial worksheets (Mortgage, Loan, Tip, etc.), Advanced graphing functions, Tape View for recent equations, Multiple display and calculator modes

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Best Calc App Ever!
- 👍 Excellent and versatile
- 👍 Extremely useful
- 👍 Fantastic app
- 👍 Great calculator with no subscriptions

**What reviewers complain about**

- 🐛 Stopped working/redownloaded/demands payment again
- 🐛 now just crashes on both ipad and iphone hasn't been updated in years
- 🐛 Broken with iPadOS 14.2
- 🐛 Tape not working
- 🐛 Decimals Won't Even Work

**Reported bugs**

- Stopped working after being paid for
- Crashes on iPad and iPhone, hasn't been updated in years
- Broken with iPadOS 14.2
- Tape not working
- Decimals won't work properly

**Requested features**

- Add option to put the tape on either the right or left side in landscape orientation
- Include a help button showing how to use the functions
- Add a dark mode option


### Codex Calc

[App page](https://appshunter.io/ios/app/codex-calc/id505057155)

This app offers a powerful yet intuitive calculator experience with a variety of modes including scientific, unit conversion, and tip calculation. It features a customizable interface and a detailed history tape for all your calculations.

**Highlights:** Full scientific calculator functions, Unit converter, Tip calculator, RPN mode, History tape, Customizable interface, Multiple visual themes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calc Pro HD free?

Calc Pro HD costs $7.99, with no in-app purchases.

### Is Codex Calc free?

Codex Calc costs $0.99, with no in-app purchases.

### Which has better reviews, Calc Pro HD or Codex Calc?

Calc Pro HD is rated higher. Calc Pro HD averages 4.7 out of 5 from 283 ratings, while Codex Calc averages 4.0 from 1 ratings.

### Do Calc Pro HD or Codex Calc have ads?

Neither Calc Pro HD nor Codex Calc shows ads.

### Which is updated more often, Calc Pro HD or Codex Calc?

Calc Pro HD ships an update every 3 months, and Codex Calc every 6 months. Most recently, Calc Pro HD was updated on July 4, 2026 and Codex Calc on June 5, 2026.

---

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