# AddCalc PRO vs Nixie Calculator

The clearest difference is price: Nixie Calculator at Free against AddCalc PRO's $0.99. AddCalc PRO's advantage is in-app purchases (none vs 1) and review sentiment (86% vs 67%). On update cadence, ads, device support and iOS requirement there is nothing between them.

Nixie Calculator is free to download; AddCalc PRO costs $0.99 up front. Nixie Calculator sells 1 one-off in-app purchase. AddCalc PRO asks for nothing beyond the download.

AddCalc PRO ships an update every 6 weeks, Nixie Calculator monthly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AddCalc PRO | Nixie Calculator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.9 (15 ratings)](https://appshunter.io/ios/app/nixie-calculator/id1489019109/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | **85.7% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 4 MB | 36 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shinichi Aokawa](https://appshunter.io/developer/502862033) | [UNB SYSTEMS PTY LTD](https://appshunter.io/developer/1514057763) |

## What reviewers say

### AddCalc PRO

[App page](https://appshunter.io/ios/app/addcalc-pro/id502862030)

This calculator app offers both standard and adder calculation modes, with customizable themes, sounds, and editing features. It allows for easy copying of logs and totals, and supports various calculation functions for accounting and everyday use.

**Highlights:** Dual calculator modes (adder and standard), Customizable button design, background, and brightness, Selectable sound effects, Input log editing and recalculation, Voice reading of input log, Copy log and total functionality, Decimal point and rounding switching

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is AddCalc PRO free?

AddCalc PRO costs $0.99, with no in-app purchases.

### Is Nixie Calculator free?

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

### Do AddCalc PRO or Nixie Calculator have ads?

Neither AddCalc PRO nor Nixie Calculator shows ads.

### Which is updated more often, AddCalc PRO or Nixie Calculator?

AddCalc PRO ships an update every 6 weeks, and Nixie Calculator monthly. Most recently, AddCalc PRO was updated on October 26, 2026 and Nixie Calculator on October 24, 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.*