Roman Calculator vs Countdown Timer Nano
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Roman Calculator
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.
- 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
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Roman Calculator is a full function calculator and the first to calculate roman fractions. Choose from four backgrounds including your image library and four button style. Styles are selectable in settings or can be set with a swipe. The result of all calculations will be displayed as a roman number. Tap the Convert button to convert Roman to Arabic and visa versa. In landscape mode, both roman numbers and arabic numbers are displayed. Landscape mode also adds more functions. The functions include sin, cos, tan, square root, inverse, memory and more.
Countdown Timer Nano
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.
- Minimalist design
- Numerical and graphical time representation
- Animating circle timer
- Optional sound alerts
- Large, visible numbers
- Up to 60-minute timers (free)
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Features: ● Large numbers for great visibility. ● Simple and intuitive use. ● Circle animates and color changes as time is passing. ● Optional sounds to keep you on track! ● Set up time to 60 minutes (free version).
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Roman Calculator | Countdown Timer Nano |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (4 ratings) — better | 4.3 (24 ratings) |
| Positive reviews | 80.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 24 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | John Millhouse | Igor Donkov |
Customer experience
Roman Calculator
Countdown Timer Nano
In-app purchases
Roman Calculator
No in-app purchases
Countdown Timer Nano
No in-app purchases
Questions
Is Roman Calculator free?
Is Countdown Timer Nano free?
Which has better reviews, Roman Calculator or Countdown Timer Nano?
Do Roman Calculator or Countdown Timer Nano have ads?
Which is updated more often, Roman Calculator or Countdown Timer Nano?
Other comparisons
