Roman Calculator vs Robot Counter
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
Read full descriptionHide full description
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.
Robot Counter
Read full descriptionHide full description
This is a very simple counter. You can save a count and name of it. You can load your save data.
Screenshots
Verdict
The clearest difference is price: Robot Counter at Free against Roman Calculator's $0.99. Robot Counter also leads on iOS requirement (12.0 vs 26.0). Roman Calculator's advantage is ads (none vs shown) and update cadence (every 5 months vs every 20 months). On 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
Robot Counter 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 ships an update every 5 months, Robot Counter every 20 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.
| Parameter | Roman Calculator | Robot Counter |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 months — better | Every 20 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | John Millhouse | Kyohei Hakka |
In-app purchases
Roman Calculator
No in-app purchases
Robot Counter
No in-app purchases
Questions
Is Roman Calculator free?
Is Robot Counter free?
Do Roman Calculator or Robot Counter have ads?
Which is updated more often, Roman Calculator or Robot Counter?
Other comparisons
