# CalcKX vs Constructive Calculator

The clearest difference is device support: CalcKX at 3 against Constructive Calculator's 1. CalcKX also leads on iOS requirement (14.1 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CalcKX ships an update every 4 days, Constructive Calculator every 8 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CalcKX | Constructive Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/constructive-calculator/id6778157421/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 8 days |
| Monetization | — | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | **14.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Martin Kowollik](https://appshunter.io/developer/1496665932) | [Dmitriy Mayorov](https://appshunter.io/developer/6778157423) |

## What reviewers say

### CalcKX

[App page](https://appshunter.io/ios/app/calckx/id1583409123)

**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 CalcKX free?

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

### Is Constructive Calculator free?

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

### Do CalcKX or Constructive Calculator have ads?

Neither CalcKX nor Constructive Calculator shows ads.

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

CalcKX ships an update every 4 days, and Constructive Calculator every 8 days. Most recently, CalcKX was updated on October 25, 2026 and Constructive Calculator on October 28, 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.*