# Codex Calc vs ReadableCalc

The clearest difference is price: ReadableCalc at Free against Codex Calc's $0.99. ReadableCalc also leads on update cadence (weekly vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ReadableCalc is free to download; Codex Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Codex Calc ships an update every 6 months, ReadableCalc weekly. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Codex Calc | ReadableCalc |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/codex-calc/id505057155/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Paid | — |
| Size | 11 MB | 28 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Driftwood Studio Software LLC](https://appshunter.io/developer/1822849713) | [YONAGARE LAB](https://appshunter.io/developer/1810986554) |

## What reviewers say

### 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


### ReadableCalc

[App page](https://appshunter.io/ios/app/readablecalc/id6747457253)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Codex Calc free?

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

### Is ReadableCalc free?

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

### Do Codex Calc or ReadableCalc have ads?

Neither Codex Calc nor ReadableCalc shows ads.

### Which is updated more often, Codex Calc or ReadableCalc?

Codex Calc ships an update every 6 months, and ReadableCalc weekly. Most recently, Codex Calc was updated on October 6, 2026 and ReadableCalc on October 7, 2026.

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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.*