Calculator + vs Roman Numbers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator +
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
- Free basic and scientific calculator
- Intuitive interface with equation and result display
- Fraction and percent support
- Advanced editing capabilities
- Polynomial and linear equation solver
- Graphing calculator
- Unit conversion and geometric calculators
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Award winning calculator app for iPad and iPhone. Designed with simplicity, usability and beauty in mind! FEATURES: - Free basic calculator - Free scientific calculator - Elegant & Intuitive interface - Advanced editing by easily going back and forth - Displays both the equation & the result at the same time - Supports Fraction & Percent - Supports many scientific functions If you are looking for more advanced features you can upgrade to one or more of the following: - Fraction Calculator with feet, inches & cm support! - Solving for x with a polynomial Calculator for solving quadratic & cubic equations 2x³ - 4x² - 22x + 24 = 0 - Linear Equations Solver for solving system of linear equations 2x – y = 9 3x + 4y = –14 - Graphing Calculator to find the local min, max & intersection points y = 2x³ – 4x (x² + y²)³ = -27y²x² - Triangle Calculator - Cone Calculator - Arc Calculator - Circle Calculator - Base Converter ( HEX OCT BIN DEC ) - Multiple themes Enjoy the FREE Scientific calculator on your iPhone & iPad. If you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Roman Numbers
Easily convert between standard numbers and Roman numerals. This utility also includes key historical dates from Ancient Rome.
- Number to Roman numeral conversion
- Roman numeral to number conversion
- Ancient Roman historical dates
- Simple user interface
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This simple application allows you to convert numeric numbers to and from Roman numerals and contains the main dates of the history of Ancient Rome.
Screenshots
Verdict
The clearest difference is in-app purchases: Roman Numbers at none against Calculator +'s 12. Roman Numbers also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 85%). Calculator +'s advantage is ratings volume (10K vs 1) and update cadence (every 5 days vs every 11 days). On price, ads 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
Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month. Roman Numbers asks for nothing beyond the download.
Roman Numbers holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 100% of Roman Numbers's.
Calculator + ships an update every 5 days, Roman Numbers every 11 days. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.
| Parameter | Calculator + | Roman Numbers |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 84.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 10K — better | 1 |
| Update frequency | Every 5 days — better | Every 11 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 14.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | xNeat.com | Yurii Sushko |
Customer experience
Calculator +
Roman Numbers
Bugs and requests
Calculator +
Reported bugs
5 issues- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes
Requested features
5 requests- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines
Roman Numbers
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator +
- Scientific Calculator3 Days trial$4.991 Month
- Calculator7 Days trial$39.991 Year
- Linear Calculator$2.99
- Factoring Calculator$2.99
- Handwriting Calculator$2.99
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- Currency Converter$2.99
- Themes Pack$2.99
- Graphing Calculator$3.99
- Fraction Calculator$3.99
- Scientific Calculator$4.99
- Calculator Plus$4.99
- Calculator$16.99
Roman Numbers
No in-app purchases
Questions
Is Calculator + free?
Is Roman Numbers free?
Which has better reviews, Calculator + or Roman Numbers?
Do Calculator + or Roman Numbers have ads?
Which is updated more often, Calculator + or Roman Numbers?
Other comparisons
