# Nixie Calculator vs Ziro

The clearest difference is in-app purchases: Ziro at none against Nixie Calculator's 1. On price, update cadence, ads and device support there is nothing between them.

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

Nixie Calculator ships an update monthly, Ziro every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Nixie Calculator | Ziro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/nixie-calculator/id1489019109/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 46 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNB SYSTEMS PTY LTD](https://appshunter.io/developer/1514057763) | [Innolope](https://appshunter.io/developer/1830527288) |

## What reviewers say

### Nixie Calculator

[App page](https://appshunter.io/ios/app/nixie-calculator/id1489019109)

This calculator app features a digital paper tape to display entries, which can be copied or shared. It offers various customization options like color schemes, rounding, and display modes, blending retro aesthetics with modern device technology.

**Highlights:** Paper tape for entry display, Copy and paste functionality, Customizable color schemes, Adjustable rounding and exponential modes, Classic Nixie font option, Thousand separator styles

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Color Layouts | $2.99 | one-time |


### Ziro

[App page](https://appshunter.io/ios/app/ziro-binary-clock-and-focus/id6756921343)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nixie Calculator free?

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

### Is Ziro free?

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

### Do Nixie Calculator or Ziro have ads?

Neither Nixie Calculator nor Ziro shows ads.

### Which is updated more often, Nixie Calculator or Ziro?

Nixie Calculator ships an update monthly, and Ziro every 2 months. Most recently, Nixie Calculator was updated on November 3, 2026 and Ziro on November 5, 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.*