# Own calculator vs Karucapatoxic

The clearest difference is in-app purchases: Karucapatoxic at none against Own calculator's 1. Karucapatoxic also leads on update cadence (every 2 weeks vs every 33 months). Own calculator's advantage is iOS requirement (12.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Own calculator sells 1 one-off in-app purchase. Karucapatoxic asks for nothing beyond the download.

Own calculator ships an update every 33 months, Karucapatoxic every 2 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Own calculator | Karucapatoxic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (4 ratings)](https://appshunter.io/ios/app/own-calculator/id1127851518/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 49 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [STRICKLAND SOFTWARE ENGINEERING CORPORATION](https://appshunter.io/developer/1638580402) | [Gurgen Abagyan](https://appshunter.io/developer/1814046869) |

## What reviewers say

### Own calculator

[App page](https://appshunter.io/ios/app/own-calculator/id1127851518)

This app allows users to create custom mathematical rules, transforming standard calculations into personalized equations. Surprise others with unique results by defining your own logic for any expression. Supports multiple languages for a global user base.

**Highlights:** Create custom mathematical rules, Personalize any expression, Surprise others with unique results, Multi-language support, Intuitive interface

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The ability to create an unlimited number own calculation rules | $0.99 | one-time |


### Karucapatoxic

[App page](https://appshunter.io/ios/app/karucapatoxic/id6745809669)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Own calculator free?

Own calculator is free to download, with in-app purchases available.

### Is Karucapatoxic free?

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

### Do Own calculator or Karucapatoxic have ads?

Neither Own calculator nor Karucapatoxic shows ads.

### Which is updated more often, Own calculator or Karucapatoxic?

Own calculator ships an update every 33 months, and Karucapatoxic every 2 weeks. Most recently, Own calculator was updated on November 2, 2026 and Karucapatoxic on October 30, 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.*