# OmniCounter vs kong calculator

The clearest difference is in-app purchases: kong calculator at none against OmniCounter's 10. kong calculator also leads on update cadence (every 4 days vs every 4 months). OmniCounter's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. OmniCounter sells 10 one-off in-app purchases. kong calculator asks for nothing beyond the download.

OmniCounter ships an update every 4 months, kong calculator every 4 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | OmniCounter | kong calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/omnicounter/id1569846314/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 14 MB | 20 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [留传 于](https://appshunter.io/developer/1569844705) | [Changyeol Seo](https://appshunter.io/developer/551904752) |

## What reviewers say

### OmniCounter

[App page](https://appshunter.io/ios/app/omnicounter/id1569846314)

This app is a comprehensive calculator with support for basic, scientific, and advanced mathematical functions. It features a customizable keyboard, multiple input bases, and expression beautification. Enjoy a powerful, ad-free calculation experience.

**Highlights:** Supports over a dozen computing categories, Customizable keyboard with auto-completion, Multiple input bases (binary, octal, decimal, hex), Beautified input expressions, Optional historical features, Copy inputs and outputs

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Datetime | $0.99 | one-time |
| Calculus | $2.99 | one-time |
| Combinatorics | $2.99 | one-time |
| Economics | $2.99 | one-time |
| Geometry | $2.99 | one-time |
| Matrix & Vector | $2.99 | one-time |
| SpecialFunction | $2.99 | one-time |
| NumberTheory | $2.99 | one-time |
| Statistics | $2.99 | one-time |
| Trigonometry | $2.99 | one-time |


### kong calculator

[App page](https://appshunter.io/ios/app/kong-calculator/id1594969449)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OmniCounter free?

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

### Is kong calculator free?

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

### Do OmniCounter or kong calculator have ads?

kong calculator shows ads; OmniCounter does not.

### Which is updated more often, OmniCounter or kong calculator?

OmniCounter ships an update every 4 months, and kong calculator every 4 days. Most recently, OmniCounter was updated on October 24, 2026 and kong calculator on October 27, 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.*