# units vs Numerix Calculator

The clearest difference is in-app purchases: units at none against Numerix Calculator's 1. units also leads on update cadence (fortnightly vs every 6 months) and iOS requirement (9.3 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Numerix Calculator sells 1 one-off in-app purchase. units asks for nothing beyond the download.

units ships an update fortnightly, Numerix Calculator every 6 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | units | Numerix Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/numerix-calculator/id6759518271/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 109 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Ngo](https://appshunter.io/developer/1134969498) | [Amit Kandial](https://appshunter.io/developer/1858479815) |

## What reviewers say

### units

[App page](https://appshunter.io/ios/app/units-converter/id1134969499)

**In-app purchases:** none


### Numerix Calculator

[App page](https://appshunter.io/ios/app/numerix-calculator/id6759518271)

This app offers a modern and stylish calculator with both basic and advanced scientific functions. It features a clean interface, customizable themes, and a history of recent calculations for easy access. Perfect for everyday math and complex scientific computations.

**Highlights:** Basic calculations, Scientific functions (sin, cos, tan, log, etc.), Degree and radian modes, Calculation history, Customizable themes, Memory functions

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom Theme | $0.99 | one-time |


## Frequently asked questions

### Is units free?

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

### Is Numerix Calculator free?

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

### Do units or Numerix Calculator have ads?

Neither units nor Numerix Calculator shows ads.

### Which is updated more often, units or Numerix Calculator?

units ships an update fortnightly, and Numerix Calculator every 6 months. Most recently, units was updated on November 2, 2026 and Numerix Calculator on October 31, 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.*