Report updated Apr 30, 2026

Overview · Full Intel report in progress

Roman Calculator is an established productivity app that is a paid app. With a 5.0/5 rating from 4 reviews, it shows polarized user reception.

What is Roman Calculator?

Roman Calculator is a specialized utility that performs standard and scientific calculations while displaying results in Roman numerals. It distinguishes itself as the first calculator to support Roman fractions and offers customizable UI themes via settings or swipe gestures.

Current Momentum

v26.2 · 6mo ago

Maintenance

Last updated 182d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Productivity

No ranking data

Rating Pulse 🇺🇸

What makes this app unique?

What Does It Look Like?

What Are The Key Features?

Roman Numeral CalculationStandard

Performs all calculations with results displayed as Roman numerals, including support for Roman fractions.

Dual-Mode InterfaceStandard

Provides a standard interface in portrait mode and an expanded scientific layout in landscape mode.

Conversion ToolStandard

Allows users to toggle between Roman and Arabic numeral systems with a dedicated convert button.

UI CustomizationStandard

Offers four button styles and four background options, including the ability to import images from the user's library.

How much does it cost?

Paid

Who Built It?

John Millhouse app icon 1
John Millhouse app icon 2
John Millhouse app icon 3
John Millhouse app icon 4

John Millhouse

(29)

Providing specialized utility and board game adaptations for users seeking classic, single-device digital experiences. Focused on niche productivity and local multiplayer entertainment.

Portfolio

12

Apps

Free 5Paid 6
Games36%
Utilities18%
Education18%

Explore the full John Millhouse report

Portfolio breakdown, audience, momentum, and every app published by John Millhouse.

Go deeper

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

Analysis in progress, available soon

What is the competitive landscape for Roman Calculator?

How's The Productivity Market?

Market outlook for this category

Available very soon

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Roman Calculator

Key Takeaways

This app is a niche productivity tool designed for users who need to perform complex mathematical operations specifically within the Roman numeral system.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Roman Calculator, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Roman Calculator Intelligence Report.” Updated Apr 30, 2026. https://marlvel.ai/apps/roman-calculator

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