# Roman Calculator vs Countdown Timer Nano

The clearest difference is price: Countdown Timer Nano at Free against Roman Calculator's $0.99. Countdown Timer Nano also leads on update cadence (every 2 months vs every 5 months) and ratings volume (24 vs 4). Roman Calculator's advantage is rating (5.0 vs 4.3) and review sentiment (80% vs 50%). On ads, in-app purchases and device support there is nothing between them.

Countdown Timer Nano is free to download; Roman Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Roman Calculator holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Countdown Timer Nano has 24 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 80% of Roman Calculator's written reviews are positive against 50% of Countdown Timer Nano's.

Roman Calculator ships an update every 5 months, Countdown Timer Nano every 2 months. The most recent releases landed on October 5, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Roman Calculator | Countdown Timer Nano |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/roman-calculator/id415183786/reviews)** | [4.3 (24 ratings)](https://appshunter.io/ios/app/countdown-timer-nano/id760857445/reviews) |
| Number of ratings | 4 | **24** |
| Positive reviews | **80.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 41 MB | 12 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [John Millhouse](https://appshunter.io/developer/415183789) | [Igor Donkov](https://appshunter.io/developer/612374152) |

## What reviewers say

### Roman Calculator

[App page](https://appshunter.io/ios/app/roman-calculator/id415183786)

This calculator handles standard arithmetic and introduces roman numeral calculations, including fractions. Customize the look with different backgrounds and button styles. It offers advanced functions like trigonometry and memory in landscape mode.

**Highlights:** Roman numeral calculations, Roman fraction support, Convert Roman to Arabic and vice versa, Customizable backgrounds and button styles, Advanced functions (sin, cos, tan, sqrt, memory), Landscape mode with expanded functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Countdown Timer Nano

[App page](https://appshunter.io/ios/app/countdown-timer-nano/id760857445)

A minimalist timer app with a clean design, offering both numerical and visual time tracking. It features large numbers, an animating circle that changes color with elapsed time, and optional sound alerts. The free version allows setting timers up to 60 minutes.

**Highlights:** Minimalist design, Numerical and graphical time representation, Animating circle timer, Optional sound alerts, Large, visible numbers, Up to 60-minute timers (free)

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

**In-app purchases:** none


## Frequently asked questions

### Is Roman Calculator free?

Roman Calculator costs $0.99, with no in-app purchases.

### Is Countdown Timer Nano free?

Countdown Timer Nano is free to download, with no in-app purchases.

### Which has better reviews, Roman Calculator or Countdown Timer Nano?

Roman Calculator is rated higher. Roman Calculator averages 5.0 out of 5 from 4 ratings, while Countdown Timer Nano averages 4.3 from 24 ratings.

### Do Roman Calculator or Countdown Timer Nano have ads?

Neither Roman Calculator nor Countdown Timer Nano shows ads.

### Which is updated more often, Roman Calculator or Countdown Timer Nano?

Roman Calculator ships an update every 5 months, and Countdown Timer Nano every 2 months. Most recently, Roman Calculator was updated on October 5, 2026 and Countdown Timer Nano on September 21, 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.*