# Numerix Calculator vs ZenTime

The clearest difference is ads: Numerix Calculator at none against ZenTime's shown. Numerix Calculator also leads on iOS requirement (13.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Numerix Calculator sells 1 one-off in-app purchase and ZenTime sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Numerix Calculator | ZenTime |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | — |
| Size | 109 MB | 5 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Amit Kandial](https://appshunter.io/developer/1858479815) | [That Side Company LLC](https://appshunter.io/developer/1884466733) |

## What reviewers say

### Numerix Calculator

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

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### ZenTime

[App page](https://appshunter.io/ios/app/zentime-simple-focus-timer/id6766073616)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Numerix Calculator free?

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

### Is ZenTime free?

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

### Do Numerix Calculator or ZenTime have ads?

ZenTime shows ads; Numerix Calculator does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*